Mixing Valves - Armstrong International, Inc.

Bulletin ALW-200-C$2.00Mixing ValvesIntelligent System Solutions S TEAM • AIR • HOT W A TERX

© 2003 Armstrong-Lynnwood, Inc.Designs, materials and performance ratings are subject to change without notice.

Hot & Cold Water Mixing Valves ID ChartIllustrationTypeConnectionsNPTBodyMaterialModelMax.FlowRategpmMin.FlowRategpmCheck ValvesThermometerANSIZ358.1 - 1998ASSE 1017CSA B125ShutdownFeatureRecirc. SystemLocatedon PageRada ® Single Point & Zoned/Group Control SystemsIndividual Mixing Units3/8" Bronze 110 2.4 .5 1016 7Hot & ColdWater MixingValves1/2" 215 11† .5 1" Brass CP 320 23† 1 1-1/4" 425 46† 2 1-1/2" 40 72†† 2 Bronze2" 50 98†† 2 89121516Rada ® Solutions for Central Recirculation System Control—ElectronicSolutions for Central Recirculation System Control—ThermostaticIndividual Mixing Units3/4" 320R 15†† — Brass CPHot & Cold 1"Water Mixing425R 31†† — Valves 1-1/2" 40R 72†† — Bronze2" 50R 98†† — 18192021Flexi-Flo Package SystemsHot & ColdWater MixingValves3"Bronze50R-50R 193†† — (CopperPiping)4" 50R-50R-50R 288†† — 2223Rada ®Package SystemsElectronic 1-1/2" Bronze EMC 1 75 — 27Mixing(CopperCenterPiping)3"EMC 2150 — 27Rada ® Solutions for Emergency Fixture ControlHot & ColdWater MixingValves1" Z358-20 24† 1 Brass CP1-1/4" Z358-40 48† 2 3033Sample SpecificationsRada Single Point and Zoned/Group Control SystemsRada Solutions for Central Recirculation System ControlRada Solutions for Emergency Fixture Control† 45 psi pressure drop†† 20 psi pressure drop363945All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com3

For Point of Use or Zoned/Group Control, for Central RecirculationSystems or Emergency Equipment, Armstrong Presents…Control handle allows for a wide rangeof temperature adjustment.(Rada 40/R and 50/R have a removable key.)Over 70 years of thermostaticmixing valve manufacturingapplications know-how.Dual high-tech temperature-sensingelements (thermostats) constantly monitoroutlet temperature and instantly react tocorrect changes caused by inlet pressure ortemperature fluctuations. Dual thermostatsprovide redundancy in case of individualthermostat failure.Unique internal hub design can beset to restrict control handle movementwith single-temperature lock-out ormaximum-temperature stop feature.(Rada 40/R and 50/R have a removable key.)Internal actuator/bellows assemblytransfers thermostat expansioninstantly to proportioning mechanism.High-flow mixing valves designedspecifically to maintain outlettemperatures ±2°F at very lowflow rates.If hot water supply fails,valve will completely shutoff prior to a 5°F temperaturefall from outlet set point(215, 320/R and 425/R).(“Failure mode” constant coldwater flow feature is availableon Rada Z358 Series.)Powerful internal hydraulicaction breaks away scaledeposits to ensure longservice life.Integral inlet checkvalves supplied with allmodels but not shown.If cold water supply fails,valve will completely shutoff prior to a 5°F outlettemperature rise fromoutlet set point(215, 320/R and 425/R).Shuttle mechanism corrects inletsupply proportions to maintain aconstant outlet temperature.High-tension return spring ensuresswift shuttle correction.Clever separator seal designcontrols “seepage” and allowsthe valve to mix to within 5°F ofeither inlet supply temperature.(215, 320/R and 425/R).What do these technical benefits mean in field application terms?How about a full range of Thermostatic Mixing Valves that canalso be manifolded to produce a series of Flexi-Flo preplumbedassemblies that will allow you to:• be less concerned about high mineral content water because ofthe powerful internal action and the use of high-tech polymersand coatings• specify or use fewer valves per building, because even our largevalves have remarkable minimum flow requirements• use combinations of large valves for high flow demand buildingswithout the need to tie in a small mixing valve to handle the lowcirculating pump-only flow rate• specify or use group controllers and point-of-use valves assecondary mixers even when the central mixing valve is deliveringlow temperature (120°F/49°C or below as legislated) recirculatedhot water (most mixing valves require a significant differentialbetween hot and blend)• rest assured that many of our field representatives are either“degreed” engineers or engineered product specialists• deliver ANSI recommended “tepid” water with “failure mode”constant cold water flow to emergency fixtures• specify and install mixing valves that meet ASSE 1016,ASSE 1017 and CSA B125 where applicable4Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com

Rada, ®the World’s Most Advanced Technologyin Mixed Water Temperature Control.When it comes to mixed water temperature control, there’s a wordfor the ultimate in safety and accuracy—Rada. Hot and cold watermixing valves have a simple but critically important function in life—to provide a consistent means of regulating water temperature at orbefore a point of use. Sounds simple enough, right? But mixingvalves that depend on wax or spirit-filled capsules or old-fashionedbimetal coils as their thermostats have been anything but simple.Usually they leave you to choose between two necessary benefits:1) a powerful force to resist mineral deposition and control theproportioning device or2) a fast reaction time.The first in a family of Electronic Mixing Centers (EMC) is featuredon pages 24 through 27. Through electronic mixing we have beenable to achieve pinpoint control and accuracy at a level that is, inreality, impossible with a thermostatic mixing valve.With PC and building management system interface capability, andprogramming, data logging, alarm, and self-diagnostic features,Rada EMCs offer design options and system solutions unavailablefrom any other resource.Rada thinks you deserve both. And we deliver both with theRada principle.Why the World Needs Rada Mixing ValvesThe thermostatic mixing valve has long been regarded as an essentialmeans of ensuring that premixed hot water for general hygiene useis maintained at a safe, comfortable temperature. In addition, themultitude of process applications, along with an ever-presentrequirement for industrial safety, have increased the demand foraccurately controlled hot water at specific temperatures.Clearly, the perfect thermostatic mixing valve would combine maximumsensitivity with the ability to generate a force powerful enoughto resist mineral deposit and transmit the reaction quickly. In otherwords, the ideal mixing valve would deliver sensitivity and accuracyplus a forceful and superfast reaction time.Enter the Rada PrincipleThe Rada unit contains a corrosion-resistant flexible metal bellowsconnected to a coiled copper tube, providing a large surface area incontact with the blended water. The tube is filled with a polyeutecticcompound highly sensitive to temperature change, which almostimmediately extends or contracts the bellows when a temperaturechange occurs.Bimetal principlehas very little powerThe powerful axial force drives a proportioning mechanism to controlhot and cold water mixing more precisely than ever before, thusmaintaining a virtually constant outlet temperature.The Rada method of mixed water temperature control ends foreverthe argument over which principle—bimetal or filled capsule—issuperior. Now it’s clear: Both are outdated by Rada mixing valvesfrom Armstrong.Wax/spirit-filled capsule principlehas a slow reaction timeThe Next FrontierThermostatic water-mixing technology in various forms has beenaround since the early 1900s, with Rada firmly planted on thedevelopmental leading edge. We believe that water mixing is readyfor an evolutionary quantum leap and that the next frontier mustfeature advanced, low-voltage electronics.Rada principleHot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com5

Rada ®Single Point & Zoned/Group Control SystemsThermostatic Mixing ValvesRada Single Point and Zoned/Group Control Systems featurea series of 6 individual Thermostatic Mixing Valves designedspecifically for use in non-return “dead leg” applications.The complete range has been designed to offer accuratetemperature control in installations where there are diverseflow requirements between .5 and 295 gpm (1.9 and 1,078 lpm).SizingTo size a mixing valve for single open outlet applications, simplymatch the required flow rate with the available maintained inletwater pressure. Correlate with required minimum flow rate andmake a selection.When sizing for zoned or group control applications, ensure thatthere is sufficient residual pressure (20 psi minimum is suggested)after the mixing valve to satisfactorily operate the outlet fixtures atrealistic maximum simultaneous demand.Rada Thermostatic Mixing Valves (gpm)ModelPressure Drop (psi)5 10 15 20 25 30 35 40 45 50Min. Flow110 — .75 — 1.25 — 1.75 — 2.25 — 2.5 .5 .25215 4 5 7 8 9 9 10 11 11 12 .5 1.7320 8 11 13 15 17 19 20 22 23 24 1 3.4425 15 22 27 31 35 38 41 44 46 49 2 6.940 36 51 62 72 — — — — — — 2 16.050 49 70 85 98 — — — — — — 2 22.0C vRada Thermostatic Mixing Valves Installed in Parallel (gpm)ModelPressure Drop (psi)5 10 15 20Min. FlowC v40/40 72 101 124 143 4 3250/50 98 139 170 197 4 4450/50/50 148 209 256 295 6 66Data on the individual Rada Mixing Valves for Single Point and Zoned/Group Control Systems can be found on pages 7 through 16.Certified drawings, specifications, installation and maintenance guides, and plumbing schematics available upon request by callingHot Water Group at (269) 279-3602.Hot Water SupplyMixed FlowCold Water SupplySystem LayoutLegendThermometerCheck ValveAll dimensions and weights are approximate. Use certified print Sinkfor exact dimensions. Isolation Design Valve and materials are subject to change without notice.6Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Shower Three Rivers, MI 49093 Stop – USA ValvePhone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com

Single Point & Zoned/Group Control SystemsModel 110ASSE 1016 certified “point of use” Thermostatic Mixing Valve.Designed and applied specifically to meet ASSE Standard 1016requirements for under-lavatory sanitary applications.Capable of close temperature control at diverse flow rates aslow as .5 gpm, Model 110 has been “value engineered” so thatretrofit installations to bring existing sites up to ASSE standardscan be accomplished without prohibitive expenditure.Model 110 is recommended for use for single lavatory control.Rada 215 (page 8) is recommended if group control of lavatoriesmeets the installation and budgetary requirements of the site.Model 110 Offers:Safety. Maintains outlet temperature +/-3°F. Integral dual checkvalves prevent cross connection. Temperature limiting featureand automatic thermal shutdown in the event of an inlet supplyfailure. Tamper-resistant locking cap.5-1/8"(130 mm)Economy. Value engineered to accommodate multipleunit applications.Comfort. Maintains a steady outlet temperature by constantinternal monitoring and correcting of inlet supply temperatureand pressure applications.1-7/8"(48 mm)Technical Specifications••••••••••3/8" (10 mm) compressionOperating pressuresMaximum: 150 psi (10 bar)Minimum: 30 psi (2.1 bar)ASSE 1016 certifiedFlow coefficient (C v ) .25Integral check valves and strainersInlet hot supply 120° to 180°FInlet cold supply 40° to 85°FMinimum inlet/outlet temperature differential 15°FMaximum outlet temperature 120°FShipping weight 3 lbs (1.3 kg)For a fully detailed certified drawing, refer to CDLW 1113.3-9/16"(90 mm)AdjustingCapMixedWaterHotWaterColdWaterColdWaterRada Thermostatic Mixing Valves (gpm)ModelPressure Drop (psi)5 10 15 20 25 30 35 40 45 50Min. Flow110 — .75 — 1.25 — 1.75 — 2.25 — 2.5 .5 .25215 4 5 7 8 9 9 10 11 11 12 .5 1.7320 8 11 13 15 17 19 20 22 23 24 1 3.4425 15 22 27 31 35 38 41 44 46 49 2 6.940 36 51 62 72 — — — — — — 2 16.050 49 70 85 98 — — — — — — 2 22.0C vAll dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com7

Rada ®Rada 215Rada Thermostatic Mixing Valve of “sealed for life” replaceablecartridge construction. Compact design is ideally suited torecessed enclosure, plumbing chase and mechanical roominstallations or as console, deck or wall mount unit for tub filland shower applications. Complete operating mechanism ofvalve is enclosed in a durable disposable polymer cartridgefor ease of maintenance. Powerful internal movement of thehot and cold water proportioning assembly ensures resistanceto high mineral content water. Capable of close temperaturecontrol at full (12 gpm/45 lpm) and reduced (.5 gpm/1.9 lpm)flow rates. Unit is designed for surface mount installation andis supplied as standard with a tamperproof single temperature“locking” shroud and variable temperature control trim set.** Use of the trim set allows for full temperature control to within5°F (2°C) of either inlet supply along with an integral maximumtemperature limit stop and single temperature locking option.Single Point & Zoned/Group Control SystemsRada 215 Offers:Safety. Integral check valves to prevent cross connection.A maximum temperature limiting feature and automaticshutdown in the event of an inlet supply failure.Economy. New technology and state-of-the-art materials reducecost. Single “no spare parts” replaceable cartridge design reducesfield maintenance and parts stocking requirements.1-5/8"(41 mm)Hot WaterBlendedWaterCold WaterComfort. Maintains a steady outlet temperature by constantinternal monitoring and correcting of inlet supply temperatureand pressure fluctuations.1-1/8"(29 mm)1/2" NPT4-13/16"(122 mm)Technical Specifications•••••••1/2" (15 mm) NPT inlets and 1/2" (15 mm) NPT outletDZR brass/stainless alloy/polymer constructionOperating pressuresMaximum: 150 psi (10 bar)Minimum: 10 psi (.7 bar)Maximum pressure loss ratio: 10 to 1**Flow coefficient (C v ) 1.74Integral inlet check valves and strainersShipping weight 4 lbs (1.8 kg)**Ratio of inlet pressures accounting for restrictions on valveoutlet (minus back pressure)For a fully detailed certified drawing, refer to CDLW #1057.Trim Set4-1/16"(103 mm)Rada Thermostatic Mixing Valves (gpm)ModelPressure Drop (psi)5 10 15 20 25 30 35 40 45 50Min. Flow110 — .75 — 1.25 — 1.75 — 2.25 — 2.5 .5 .25215 4 5 7 8 9 9 10 11 11 12 .5 1.7320 8 11 13 15 17 19 20 22 23 24 1 3.4425 15 22 27 31 35 38 41 44 46 49 2 6.940 36 51 62 72 — — — — — — 2 16.050 49 70 85 98 — — — — — — 2 22.0C vAll dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.8Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com

Rada ®Single Point & Zoned/Group Control SystemsRada 320Rada Thermostatic Mixing Valve of “sealed for life” disposablecartridge construction. Compact design and top and/or bottomblended water outlet make Rada 320 ideal for recessedenclosure, plumbing chase and mechanical room installations.Rada 320 is the mixing valve of choice for console, deck or“in wall” installation (Rada 320B) when installed for therapy/whirlpool bathing unit applications.Complete operating mechanism of valve is enclosed in durablepolymer cartridge for easy field maintenance. Powerful internalproportioning mechanism resists mineral deposits and buildup.Capable of close temperature control at full (24 gpm/91 lpm)and reduced (1 gpm/3.8 lpm) flow rates. Able to blend to within5°F (2°C) of either inlet supply due to “low seepage” across internalproportioning mechanism.Rada 320 Offers:Safety. Dual thermostats provide redundancy in case of individualthermostat failure. Integral check valves prevent cross connection.Maximum temperature limiting and single temperature lockingfeature. Instant automatic shutdown prior to a 5°F (2°C) temperaturerise/fall in the event of an inlet supply failure.Economy. New technology and state-of-the-art materials reducecost. Single “no spare parts” replaceable cartridge design reducesfield maintenance and parts stocking requirements.HotWater4x Ø 5/32"on 1.75 DBC5-7/8"(149 mm)ColdWater3"(77 mm)Ø 3-1/4"(83 mm)2"(52 mm)7-3/8"(187 mm)Comfort. Maintains a steady outlet temperature by constantinternal monitoring and correcting of inlet supply temperatureand pressure fluctuations.BlendedWaterRada 320 supersedes Rada 222, 17 and 20.Technical Specifications••••••••••1" (25 mm) NPT inlets and 1" (25 mm) NPT outletChrome-plated DZR brass/polymer constructionOperating pressuresMaximum: 150 psi (10 bar)Minimum: 10 psi (.7 bar)Maximum flow rate at 9 ft/sec (2.7 m/sec): 16 gpm (61 lpm)Maximum pressure loss ratio: 10 to 1*ASSE 1017 and CSA B125 certifiedFlow coefficient (C v ) 3.4Integral check valves and strainersDual thermostatic elementsShipping weight 10 lbs (4.5 kg)* Ratio of inlet pressures accounting for restrictions on valve outlet(minus back pressure)For fully detailed certified drawing, refer to CDLW #1061.Rada Thermostatic Mixing Valves (gpm)ModelPressure Drop (psi)5 10 15 20 25 30 35 40 45 50Min. Flow110 — .75 — 1.25 — 1.75 — 2.25 — 2.5 .5 .25215 4 5 7 8 9 9 10 11 11 12 .5 1.7320 8 11 13 15 17 19 20 22 23 24 1 3.4425 15 22 27 31 35 38 41 44 46 49 2 6.940 36 51 62 72 — — — — — — 2 16.050 49 70 85 98 — — — — — — 2 22.0All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.C vHot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com9

Rada ®Rada 320DA derivative of the standard Rada 320 Thermostatic Mixing Valve,this assembly is ideal for surface mount, recessed enclosure,plumbing chase and mechanical room installations.Factory supplied pre-plumbed and pressure-tested Rada 320D issupplied as standard combination inlet check stop/union/strainers,thermometer and outlet stop valve.** Rada 320D is supplied with top outlet and can be site reconfiguredfor bottom outlet applications.Rada 320D is supplied as a polished chrome Thermostatic MixingValve with self-finish brass/bronze fittings and connections.Rada 320DC is supplied as a polished chrome ThermostaticMixing Valve with nickel-plated fittings and connections.Rada 320 Offers:Safety. Dual thermostats provide redundancy in case of individualthermostat failure. Integral check valves prevent cross connection.Maximum temperature limiting and single temperature lockingfeature. Instant automatic shutdown prior to a 5°F (2°C) temperaturerise/fall in the event of an inlet supply failure.Economy. New technology and state-of-the-art materials reducecost. Single “no spare parts” replaceable cartridge design reducesfield maintenance and parts stocking requirements.Comfort. Maintains a steady outlet temperature by constantinternal monitoring and correcting of inlet supply temperatureand pressure fluctuations.Single Point & Zoned/Group Control SystemsRada 320 supersedes Rada 222, 17 and 20.Technical Specifications••3/4" (20 mm) NPT inlets and 3/4" NPT outletChrome-plated DZR brass/polymer construction withself-finish brass and bronze components (320D) orwith nickel-plated components (320DC)Operating pressuresMaximum: 150 psi (10 bar)Minimum: 10 psi (.7 bar)Maximum flow rate at 9 ft/sec (2.7 m/sec): 16 gpm (61 lpm)Maximum pressure loss ratio: 10 to 1**ASSE 1017 and CSA B125 certifiedFlow coefficient (C v ) 3.4Integral combination inlet check stop/union/strainersFitted with thermometer and outlet stop valveDual thermostatic elementsShipping weight 17 lbs (6.4 kg)•••••11-7/16"(291 mm)9-1/8"(232 mm)Rada 3207-3/8"(187 mm)**Ratio of inlet pressures accounting for restrictions on valve outlet(minus back pressure)For a fully detailed certified drawing, refer to CDLW #1102.Rada Thermostatic Mixing Valves (gpm)ModelPressure Drop (psi)5 10 15 20 25 30 35 40 45 50Min. Flow110 — .75 — 1.25 — 1.75 — 2.25 — 2.5 .5 .25215 4 5 7 8 9 9 10 11 11 12 .5 1.7320 8 11 13 15 17 19 20 22 23 24 1 3.4425 15 22 27 31 35 38 41 44 46 49 2 6.940 36 51 62 72 — — — — — — 2 16.050 49 70 85 98 — — — — — — 2 22.0All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.C v10Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com

Rada ®Single Point & Zoned/Group Control SystemsRada 320-FMCRada Thermostatic Mixing Valve for remote/secure cabinet mount“dead leg” group fixture control. Rada 320 is ideal for thisapplication due to its low service, single “sealed for life” disposablecartridge construction, low inlet to outlet temperature differentialrequirement and low flow single fixture control capability.Rada 320 is supplied fully assembled and pressure tested in an18" x 24" x 8" stainless steel recessed cabinet with a 2" flange.Cabinet has a polished stainless steel piano-hinged door with akeyed cylinder lock.Rada 320-FMC is supplied as standard with combination inletcheck stop/union/strainers, thermometer and outlet stop valve.Rada 320-FMC is supplied as standard under this modelnumber for top inlet hot and cold water supplies and a top outletwith a left hand hinged door as indicated in adjacent drawing.Rada 320-FMC can be specified/ordered with the followingpiping configurations under the following model numbers:Top inlets/bottom outletBottom inlets/bottom outletBottom inlets/top outlet320-FMC-TB320-FMC-BB*320-FMC-BT**320-FMC-BB/BT are supplied with a right-hand hinged door.Technical Specifications•••••••3/4" NPT (20 mm) inlets and 3/4" NPT (20 mm) outletCabinet construction: 14 gauge #4 finish stainless steelCabinet outer flange 2"Integral thermometerIntegral check stop/strainer/unionsRefer to Rada 320, page 9, for mixing valve technical detail.Outlet stop valveShipping weight 58 lbs (22 kg)•A18" (457 mm)NOTE: Available as above in a Surface Mounted Cabinet ofthe same size and specification, less recess flange, undermodel number 320-SMC. Use dimensions A, B and C only.For a fully detailed certified drawing, refer to CDLW #1070.9-1/8"(232 mm)C8" (203 mm)2-5/16"(59 mm)D28" (711 mm)B24" (610 mm)Rada 320Door Removedfor ClarityE22" (559 mm)All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com11

Rada ®Rada 425Rada Thermostatic Mixing Valve is suitable for safe, accuratewater temperature control in single open outlet or “dead leg”multiple-point-of-use applications. Compact design and top orbottom blended water outlet make Rada 425 ideal for surfacemount, recessed enclosure or plumbing chase installations.Rada 425 is capable of very close temperature control at full(49 gpm/185 lpm) and reduced (2 gpm/7.5 lpm) flow rates, whichmakes it an excellent selection for larger “group” fixture control.Rada 425 is able to blend to within 5°F (2°C) of either inletsupply temperature because of “low seepage” across theinternal proportioning mechanism, while still maintaining thermalcorrection/shutdown capability. This feature makes Rada 425 asuperb selection for secondary or “zoned” fixture/building watertemperature control.Rada 425 Offers:Safety. Dual thermostats provide redundancy in case of individualthermostat failure. Integral inlet check valves prevent crossconnection. Maximum temperature limiting and single temperaturelocking features legislate control. Instant automatic shutdownwill occur prior to a 5°F (2°C) temperature rise/fall in the eventof an inlet supply failure.Single Point & Zoned/Group Control SystemsEconomy. New technology and state-of-the-art materials reducecost. Design and functional simplicity reduce field maintenanceand parts stocking requirements.Comfort. Maintains a steady outlet temperature by constantinternal monitoring and correcting of inlet supply temperatureand pressure fluctuations.HotWaterColdWaterRada 425 supersedes Rada 25.Technical Specifications••••••••1-1/4" NPT (32 mm) inlets and 1-1/4" outletChrome-plated DZR brass/polymer constructionOperating pressuresMaximum: 150 psi (10 bar)Minimum: 10 psi (.7 bar)Maximum flow rate at 9 ft/sec (2.7 m/sec): 26 gpm (98 lpm)Minimum flow rate 2 gpm (7.5 lpm)ASSE 1017 and CSA B125 certifiedMaximum pressure loss ratio: 10 to 1*Flow coefficient (C v ) 6.9Integral inlet check valves and strainersDual thermostatic elementsShipping weight 18 lbs (8.1 kg)* Ratio of inlet pressures accounting for restrictions on valve outlet(minus back pressure)For a fully detailed certified drawing, refer to CDLW #1065.7-7/8"(200 mm)2-1/8"(55 mm)1-1/4" NPT Typ.(32 mm)BlendedWater5-1/2"(141 mm)8-3/8"(214 mm)Rada Thermostatic Mixing Valves (gpm)ModelPressure Drop (psi)5 10 15 20 25 30 35 40 45 50Min. Flow110 — .75 — 1.25 — 1.75 — 2.25 — 2.5 .5 .25215 4 5 7 8 9 9 10 11 11 12 .5 1.7320 8 11 13 15 17 19 20 22 23 24 1 3.4425 15 22 27 31 35 38 41 44 46 49 2 6.940 36 51 62 72 — — — — — — 2 16.050 49 70 85 98 — — — — — — 2 22.0All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.C v12Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com

Rada ®Single Point & Zoned/Group Control SystemsRada 425DA derivative of the standard Rada 425 Thermostatic Mixing Valve,the Rada 425D is suitable for safe and accurate water temperaturecontrol in single open outlet or “dead leg” multiple-point-of-useapplications. This assembly is ideal for surface mount, recessedenclosure, plumbing chase and mechanical room installations.Factory supplied pre-plumbed and pressure-tested, Rada 425Dhas standard combination inlet check stop/union/strainers,thermometer and outlet stop valve.** Rada 425D is supplied with top outlet and can be site reconfiguredfor bottom outlet application.Rada 425D is supplied as a polished chrome Thermostatic MixingValve with self-finish brass/bronze fittings and connections.Rada 425DC is supplied as a polished chrome ThermostaticMixing Valve with nickel-plated fittings and connections.Rada 425 Offers:Safety. Dual thermostats provide redundancy in case of individualthermostat failure. Integral inlet check valves prevent crossconnection. Maximum temperature limiting and single temperaturelocking features legislate control. Instant automatic shutdownwill occur prior to a 5°F (2°C) temperature rise/fall in the eventof an inlet supply failure.Economy. New technology and state-of-the-art materials reducecost. Design and functional simplicity reduce field maintenanceand parts stocking requirements.Comfort. Maintains a steady outlet temperature by constantinternal monitoring and correcting of inlet supply temperatureand pressure fluctuations.Rada 425 supersedes Rada 25.13-7/32"(335 mm)Rada 425Technical Specifications••1" (25 mm) NPT inlets and 1" NPT outletChrome-plated DZR brass/polymer construction with self-finishbrass and bronze components (425D) or with nickel-platedcomponents (425DC)Operating pressuresMaximum: 150 psi (10 bar)Minimum: 10 psi (.7 bar)Maximum flow rate at 9 ft/sec (2.7 m/sec): 26 gpm (98 lpm)Maximum pressure loss ratio: 10 to 1**ASSE 1017 and CSA B125 certifiedFlow coefficient (C v ) 6.9Integral combination inlet check stop/union/strainersFitted with thermometer and outlet stop valveDual thermostatic elementsShipping weight 26 lbs (10 kg)•••••••••10-1/4"(260 mm)7-7/8"(200 mm)For a fully detailed certified drawing, refer to CDLW #1103.Rada Thermostatic Mixing Valves (gpm)ModelPressure Drop (psi)5 10 15 20 25 30 35 40 45 50Min. Flow110 — .75 — 1.25 — 1.75 — 2.25 — 2.5 .5 .25215 4 5 7 8 9 9 10 11 11 12 .5 1.7320 8 11 13 15 17 19 20 22 23 24 1 3.4425 15 22 27 31 35 38 41 44 46 49 2 6.940 36 51 62 72 — — — — — — 2 16.050 49 70 85 98 — — — — — — 2 22.0All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.C vHot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com13

Rada ®Rada 425-FMCRada Thermostatic Mixing Valve (TMV) for remote/securecabinet mount “dead leg” group fixture control. Rada 425 isideal for this application due to its low service, low inlet tooutlet temperature differential requirement and low flow singlefixture control capability.Rada 425 is supplied fully assembled and pressure tested inan 18" x 24" x 8" stainless steel recessed cabinet with a 2"flange. Cabinet has a polished stainless steel piano-hingeddoor with a keyed cylinder lock.Rada 425-FMC is supplied as standard with combination inletcheck stop/union/strainers, thermometer and outlet stop valve.Rada 425-FMC is supplied as standard under this model numberfor top inlet hot and cold water supplies and a top outlet with aleft hand hinged as indicated in adjacent drawing.Rada 425-FMC can be specified/ordered with the followingpiping configurations under the following model numbers:Single Point & Zoned/Group Control SystemsTop inlets/bottom outletBottom inlets/bottom outletBottom inlets/top outlet425-FMC-TB425-FMC-BB*425-FMC-BT** 425-FMC-BB/BT are supplied with a right-hand hinged door.Technical Specifications••••••••1" NPT (25 mm) inlets and 1" NPT (25 mm) outletCabinet construction: 14 gauge #4 finish stainless steelCabinet outer flange 2"Outlet stop valveIntegral thermometerIntegral check stop/strainer/unionsRefer to Rada 425, page 12, for Mixing Valve technical detail.Shipping weight 70 lbs (27 kg)A18" (457 mm)10-1/4"(260 mm)C8" (203 mm)2-5/16"(59 mm)NOTE: Available as above in a Surface Mounted Cabinet ofthe same size and specification, less recess flange, undermodel number 425-SMC. Use dimensions A, B and C only.For a fully detailed certified drawing, refer to CDLW #1071.D28" (711 mm)B24" (610 mm)Rada 425Door Removedfor ClarityE22" (559 mm)All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.14Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com

Rada ®Single Point & Zoned/Group Control SystemsRada 40Rada Thermostatic Mixing Valve is suitable for accuratewater temperature control in single open outlet or “dead leg”multiple-point-of-use industrial process applications. Rada 40is also applicable for institutional group fixture or zonedtemperature control when ASSE 1016 certified individual fixturecontrols are installed at each point of use. Capable of closeoutlet water temperature control at flow rates between 2 and72 gpm (7.5 and 272 lpm).Rada 40 may be installed in parallel to increase outlet flowrates. Refer to page 6.Rada 40 Offers:Safety. Dual thermostats provide redundancy in case of individualthermostat failure. Integral check valves prevent cross connection.Has a maximum temperature locking feature with key andshutdown mode feature in the event of a cold water supply failure.*Economy. Design and functional simplicity along with easyaccessinternal components reduce maintenance time. PTFEcoated internal parts resist mineral deposition for prolongedservice life.Comfort. Fast acting thermostat maintains a constant outletwater temperature by adjusting the inlet supply proportionsto compensate for water temperature changes and systempressure fluctuations.* Shutdown mode is defined as a thermally driven bias towardthe hot seat within the valve. This action may or may not reducethe outlet flow rate relative to inlet supply and outlet set pointtemperatures. Large capacity thermostatic mixing valves(1-1/2'' and 2''/40 mm and 50 mm) cannot be guaranteed tofully shut off in the event of a cold water supply failure.9-1/4"(235 mm)(Maintenance Access)5-3/4"(146 mm)1-1/2" NPT(DN40)HotSupply4-7/8"(124 mm)8-7/8"(225 mm)Integral InletCheck Valve1-1/2" NPT(DN40)ColdSupplyIMPORTANT NOTE: If Rada 40 is to be used for group fixtureor zoned temperature control in institutional showering, bathing orhandwashing, then ASSE 1016 certified individual fixture controlsmust be installed at each point of use.10"(254 mm)If the design/specification does not call for ASSE 1016 certifiedindividual fixture fittings, then the largest group or zoned mixersuggested is Rada 425. If higher flows are required, create moregroups/zones.Technical Specifications••••••1-1/2'' (40 mm) NPT inlets and 1-1/2'' (40 mm) NPT outletDZR brass/stainless steel constructionOperating pressuresMaximum: 150 psi (10 bar)Minimum: 10 psi (.7 bar)Maximum pressure drop 20 psi (1.4 bar)Maximum flow rate at 9 ft/sec (2.7 m/sec): 58 gpm (219 lpm)Minimum flow rate 2 gpm (7.5 lpm)1-1/2" NPT(DN40)MixedFlow• ASSE 1017 and CSA B125 certified• Flow coefficient (C v) 16• Integral inlet check valves• Integral thermometer• Dual thermostatic elements• Shipping weight 30 lbs (13.5 kg)For fully detailed certified drawing, refer to CDLW #1040.Rada Thermostatic Mixing Valves (gpm)ModelPressure Drop (psi)5 10 15 20 25 30 35 40 45 50Min. Flow110 — .75 — 1.25 — 1.75 — 2.25 — 2.5 .5 .25215 4 5 7 8 9 9 10 11 11 12 .5 1.7320 8 11 13 15 17 19 20 22 23 24 1 3.4425 15 22 27 31 35 38 41 44 46 49 2 6.940 36 51 62 72 — — — — — — 2 16.050 49 70 85 98 — — — — — — 2 22.0All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.C vHot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com15

Rada ®Rada 50Rada Thermostatic Mixing Valve is suitable for accuratewater temperature control in single open outlet or “dead leg”multiple-point-of-use industrial process applications. Rada 50is also applicable for institutional group fixture or zonedtemperature control when ASSE 1016 certified individual fixturecontrols are installed at each point of use. Capable of closeoutlet water temperature control at flow rates between 2 and98 gpm (7.5 and 371 lpm).Rada 50 may be installed in parallel to increase outlet flowrates. Refer to page 6.Rada 50 Offers:Safety. Dual thermostats provide redundancy in case of individualthermostat failure. Integral check valves prevent cross connection.Has a maximum temperature locking feature with key andshutdown mode feature in the event of a cold water supply failure.*Economy. Design and functional simplicity along with easyaccessinternal components reduce maintenance time. PTFEcoated internal parts resist mineral deposition for prolongedservice life.Single Point & Zoned/Group Control SystemsComfort. Fast acting thermostat maintains a constant outletwater temperature by adjusting the inlet supply proportionsto compensate for water temperature changes and systempressure fluctuations.* Shutdown mode is defined as a thermally driven bias towardthe hot seat within the valve. This action may or may not reducethe outlet flow rate relative to inlet supply and outlet set pointtemperatures. Large capacity Thermostatic Mixing Valves(1-1/2'' and 2''/40 and 50 mm) cannot be guaranteed to fullyshut off in the event of a cold water supply failure.9-3/4"(248 mm)(Maintenance Access)6"(152 mm)2" NPT(DN50)HotSupply5-9/16"(142 mm)9-13/16"(249 mm)Integral InletCheck Valve2" NPT(DN50)ColdSupplyIMPORTANT NOTE: If Rada 50 is to be used for group fixtureor zoned temperature control in institutional showering, bathingor handwashing, then ASSE 1016 certified individual fixturecontrols must be installed at each point of use.10"(254 mm)If the design/specification does not call for ASSE 1016 certifiedindividual fixture fittings, then the largest group or zoned mixersuggested is Rada 425. If higher flows are required, create moregroups/zones.Technical Specifications••••••2'' NPT (50 mm) inlets and 2'' (50 mm) NPT outletDZR brass/stainless steel constructionOperating pressuresMaximum: 150 psi (10 bar)Minimum: 10 psi (.7 bar)Maximum pressure drop 20 psi (1.3 bar)Maximum flow rate at 9 ft/sec (2.7 m/sec): 98 gpm (371 lpm)Minimum flow rate 2 gpm (7.5 lpm)••••••2" NPT(DN50)MixedFlowASSE 1017 and CSA B125 certifiedFlow coefficient (C v) 22Integral inlet check valvesIntegral thermometerDual thermostatic elementsShipping weight 34 lbs (15.4 kg)For fully detailed certified drawing, refer to CDLW #1042.Rada Thermostatic Mixing Valves (gpm)ModelPressure Drop (psi)5 10 15 20 25 30 35 40 45 50Min. Flow110 — .75 — 1.25 — 1.75 — 2.25 — 2.5 .5 .25215 4 5 7 8 9 9 10 11 11 12 .5 1.7320 8 11 13 15 17 19 20 22 23 24 1 3.4425 15 22 27 31 35 38 41 44 46 49 2 6.940 36 51 62 72 — — — — — — 2 16.050 49 70 85 98 — — — — — — 2 22.0All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.C v16Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com

Rada ®Solutions for Central Recirculation System ControlThermostaticRada Solutions for Central Recirculation System Controlfeature four individual Thermostatic Mixing Valve assembliesand two Flexi-Flo Packages designed for use in pumpedrecirculating hot water systems.The complete range has been designed to offer accuratetemperature control in applications where there are diverseflow requirements up to 288 gpm (1,090 lpm).*All valves and valve packages designed for recirculationsystem control are identified with the suffix R.SizingTo size a mixing valve or Flexi-Flo package, simply match therequired flow rate on the charts below with the pressure dropthat the existing system can accommodate or the new systemdesign specifies. Armstrong refers to the Modified Hunter Curve,where applicable, when determining system flow requirements.NOTE: Maximum flow rates determined at 9 ft/sec (2.7 m/sec)pipeline velocity.* Consult factory for customized Flexi-Flo packages for flowrequirements in excess of 288 gpm (1,090 lpm).Rada Thermostatic Mixing Valves (gpm)ModelPressure Drop (psi)Min. System5 10 15 20Draw-offMax. Flow C v320R 8 11 13 15 0 16 3.4425R 15 22 27 31 0 26 6.940R 36 51 62 72 0 58 16.050R 49 70 85 98 0 98 22.0Flexi-Flo Packages (gpm)ModelPressure Drop (psi)Min. System5 10 15 20Draw-offMax. Flow C v50R-50R 97 137 168 193 0 193 42.450R-50R-50R 144 204 250 288 0 288 63.6Data on Rada Solutions for Central Recirculation System Control can be found on pages 18 through 23. Certified drawings, specifications,installation and maintenance guides, and plumbing schematics are available upon request by calling Hot Water Group at (269) 279-3602.Mixed FlowFrom Hot Water SourceTo Hot Water SourceMixed ReturnCold Water SupplySystem LayoutLegendRada Valve AssemblyLegendThermometer Recirculation PumpAll dimensions and weights are approximate. Use certified print for exact dimensions. Thermometer Design and materials Swing Check are subject Valve* to change without notice.Check ValveHot Water Group,Sink221 Armstrong Blvd., Isolation P.O. Box Valve 408, Three Rivers, MI 49093 Temp – Limiter USA Phone: (269) Flow 279-3602 Indicator* Fax: (269) 279-3130www.armstrong-intl.com17ShowerStop Valve*Oriented for piping schematic detail only.

Rada ®Solutions for Central Recirculation System ControlThermostaticRada 320RRada Thermostatic Mixing Valve is designed specifically to beinstalled as the primary control valve within a pumped recirculationsystem. Capable of maintaining safe, accurate water temperaturesduring both peak and zero-demand “idling” periods. With aRada 320R installed as the primary temperature controller withina pumped recirculation system, there will be a zero minimumblended water flow rate/draw-off requirement. The Rada 320Rfeatures a unique integral thermostatic return limiter that maintainsrecirculating water temperatures within the circuit. Thermostaticreturn limiters eliminate the requirement for a fitted aquastat andreduce cycling wear and tear on the circulating pump.Rada 320R Offers:Safety. Dual thermostats provide redundancy in case of individualthermostat failure. Integral check valves prevent cross connection.Maximum temperature limiting and single temperature lockingfeature. Instant automatic shutdown prior to a 5°F (2°C) temperaturerise/fall in the event of an inlet supply failure and an integralthermostatic return limiter to prevent “temperature creep” duringzero-demand periods.14"(356 mm)3/4" NPTCold SupplyEconomy. New technology and state-of-the-art materialsreduce cost. Single “no spare parts” replaceable cartridge designreduces field maintenance and parts stocking requirements.3/4" NPTHot Supply3-3/8"(86 mm)Comfort. Maintains a steady outlet temperature by constantinternal monitoring and adjustment of recirculating hot watertemperature.Technical Specifications••••••••••••3/4" (20 mm) NPT inlets and 3/4" (20 mm) NPT outletsChrome-plated DZR brass/polymer constructionOperating pressuresMaximum: 150 psi (10 bar)Minimum: 10 psi (.7 bar)ASSE 1017 and CSA B125 certifiedFlow coefficient (C v ) 3.4Integral thermometerIntegral check valves and strainersIntegral sight flow indicatorMaximum flow rate at 9 ft/sec (2.7 m/sec): 16 gpm (61 lpm)Integral thermostatic return limiterDual thermostatic elementsShipping weight 25 lbs (11 kg)3/4" NPTMixed Flow4-1/2"(114 mm)3/4" NPTMixed Return1/2" NPTReturn to HeaterFor a fully detailed certified drawing, refer to CDLW #1050.Rada Thermostatic Mixing Valves (gpm)ModelPressure Drop (psi)Min. System5 10 15 20Draw-offMax. Flow C v320R 8 11 13 15 0 16 3.4425R 15 22 27 31 0 26 6.940R 36 51 62 72 0 58 16.050R 49 70 85 98 0 98 22.0NOTE: Maximum flow rates determined at 9 ft/sec pipeline velocity.All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.18Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com

Rada ®Solutions for Central Recirculation System ControlThermostaticRada 425RRada Thermostatic Mixing Valve is designed specifically to beinstalled as the primary control valve within a pumped recirculationsystem. Capable of maintaining safe, accurate water temperaturesduring both peak and zero-demand “idling” periods. With a Rada425R installed as the primary temperature controller within apumped recirculation system, there will be a zero minimumblended water flow rate/draw-off requirement. The Rada 425Rfeatures a unique integral thermostatic return limiter that maintainsrecirculating water temperatures within the circuit. Thermostaticreturn limiters eliminate the requirement for a fitted aquastat andreduce cycling wear and tear on the circulating pump.Rada 425R Offers:Safety. Dual thermostats provide redundancy in case of individualthermostat failure. Maximum temperature limiting and singletemperature locking feature. Instant automatic shutdown priorto a 5°F (2°C) temperature rise/fall in the event of an inlet supplyfailure and an integral thermostatic return limiter to prevent“temperature creep” during zero-demand periods.Economy. New technology and state-of-the-art materialsreduce cost. Accurate across a wide diversity of flow rates,Rada 425R allows single valve installation where previously“high-low” multiple valve assemblies were required.Comfort. Maintains a steady outlet temperature by constantinternal monitoring and adjustment of recirculating hot watertemperature.1" NPT(25 mm)HotSupply1-1/4" NPT(32 mm)22-3/4"(580 mm)Rada 425BlendedWaterMixedReturn1" NPT(25 mm)1" NPT(25 mm)ColdSupplyReturn toHeater4-1/4"(108 mm)1/2" NPT(15 mm)Technical Specifications••••••••••••1" NPT (25 mm) inlets and 1" (25 mm) outlet(s)Chrome-plated DZR brass/polymer constructionOperating pressuresMaximum: 150 psi (10 bar)Minimum: 10 psi (.7 bar)Flow coefficient (C v ) 6.9ASSE 1017 and CSA B125 certifiedMaximum flow rate at 9 ft/sec (2.7 m/sec): 26 gpm (98 lpm)Integral inlet check valves and strainersIntegral thermometerIntegral sight flow indicatorIntegral thermostatic return limiterDual thermostatic elementsShipping weight 29 lbs (13 kg)7-3/4"(198 mm)For a fully detailed certified drawing, refer to CDLW #1066.Rada Thermostatic Mixing Valves (gpm)Model5 10 15 20320R 8 11 13 15 0 16 3.4425R 15 22 27 31 0 26 6.940R 36 51 62 72 0 58 16.050R 49 70 85 98 0 98 22.0NOTE: Maximum flow rates determined at 9 ft/sec pipeline velocity.Pressure Drop (psi)Min. SystemDraw-offMax. FlowC vAll dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com19

ThermostaticRada ®Rada 40RRada Thermostatic Mixing Valve is designed specifically to beinstalled as the primary control valve within a pumped recirculationsystem. Capable of maintaining safe, accurate water temperaturesduring both peak and zero-demand “idling” periods. With aRada 40R installed as the primary temperature controller within apumped recirculation system, there will be a zero minimumblended water flow rate/draw-off requirement. The Rada 40Rfeatures a unique integral thermostatic return limiter that maintainsrecirculating water temperatures within the circuit. Thermostaticreturn limiters eliminate the requirement for a fitted aquastat andreduce cycling wear and tear on the circulating pump.Rada 40R Offers:Safety. Dual thermostats provide redundancy in case of individualthermostat failure. Integral inlet check valves prevent crossconnection. A maximum temperature locking feature with keyand an integral thermostatic return limiter prevent “temperaturecreep” during zero-demand periods.Solutions for Central Recirculation System ControlEconomy. Design and functional simplicity along with easyaccessinternal components reduce maintenance time. PTFEcoated internal parts resist mineral deposition for prolongedservice life. Accurate across a wide diversity of flow rates,Rada 40R allows single valve installation where previously“high-low” multiple valve assemblies were required.Comfort. Maintains a steady outlet temperature by constantinternal monitoring and adjustment of recirculating hot watertemperature.Technical Specifications•••••••••••••1-1/2'' NPT (40 mm) inlets and 1-1/2'' (40 mm) NPT outletDZR brass/stainless steel constructionOperating pressuresMaximum: 150 psi (10 bar)Minimum: 10 psi (.7 bar)Maximum pressure drop 20 psi (1.4 bar)Maximum flow rate at 9 ft/sec (2.7 m/sec): 58 gpm (219 lpm)ASSE 1017 and CSA B125 certifiedFlow coefficient (C v ) 16Integral inlet check valvesIntegral thermometerIntegral sight flow indicatorIntegral thermostatic return limiterDual thermostatic elementsShipping weight 45 lbs (20 kg)9-1/4"(235 mm)MaintenanceAccess5-3/4"(146 mm)1-1/2" NPT(DN40)10"(254 mm)HotSupply1-1/2" NPT(DN40)4-7/8"(124 mm)MixedFlow4-1/2"(114 mm)8-7/8"(225 mm)Integral InletCheck ValveMixedReturn1" NPT(DN25)1-1/2" NPT(DN40)ColdSupply1/2" NPT(DN15)Return ToHeaterFor a fully detailed certified drawing, refer to CDLW #1041.Rada Thermostatic Mixing Valves (gpm)Model5 10 15 20320R 8 11 13 15 0 16 3.4425R 15 22 27 31 0 26 6.940R 36 51 62 72 0 58 16.050R 49 70 85 98 0 98 22.0NOTE: Maximum flow rates determined at 9 ft/sec pipeline velocity.Pressure Drop (psi)Min. SystemDraw-offMax. FlowC vAll dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.20Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com

Rada ®ThermostaticSolutions for Central Recirculation System ControlRada 50RRada Thermostatic Mixing Valve is designed specifically to beinstalled as the primary control valve within a pumped recirculationsystem. Capable of maintaining safe, accurate water temperaturesduring both peak and zero-demand “idling” periods. With aRada 50R installed as the primary temperature controller within apumped recirculation system, there will be a zero minimumblended water flow rate/draw-off requirement. The Rada 50Rfeatures a unique integral thermostatic return limiter that maintainsrecirculating water temperatures within the circuit. Thermostaticreturn limiters eliminate the requirement for a fitted aquastat andreduce cycling wear and tear on the circulating pump.Rada 50R Offers:Safety. Dual thermostats provide redundancy in case of individualthermostat failure. Integral inlet check valves prevent crossconnection. A maximum temperature locking feature with keyand an integral thermostatic return limiter prevent “temperaturecreep” during zero-demand periods.Economy. Design and functional simplicity along with easyaccessinternal components reduce maintenance time. PTFEcoated internal parts resist mineral deposition for prolongedservice life. Accurate across a wide diversity of flow rates,Rada 50R allows single valve installation where previously“high-low” multiple valve assemblies were required.Comfort. Maintains a steady outlet temperature byconstant internal monitoring and adjustment of recirculatinghot water temperature.Technical Specifications•••••••••••••2'' NPT (50 mm) inlets and 2'' (50 mm) NPT outletsDZR brass/stainless steel constructionOperating pressuresMaximum: 150 psi (10 bar)Minimum: 10 psi (.7 bar)Maximum pressure drop 20 psi (1.4 bar)Maximum flow rate at 9 ft/sec (2.7 m/sec): 98 gpm (371 lpm)ASSE 1017 and CSA B125 certifiedFlow coefficient (C v ) 22Integral inlet check valvesIntegral thermometerIntegral sight flow indicatorIntegral thermostatic return limiterDual thermostatic elementsShipping weight 45 lbs (20 kg)9-3/4"(248 mm)(MaintenanceAccess)6"(152 mm)2" NPT(DN50)10"(254 mm)HotSupply5-9/16"(142 mm)2" NPT(DN50)MixedFlow5-1/8"(130 mm)9-13/16"(249 mm)Integral InletCheck ValveMixedReturn1" NPT(DN25)2" NPT(DN50)ColdSupply1/2" NPT(DN15)Return toHeaterFor a fully detailed certified drawing, refer to CDLW #1043.Rada Thermostatic Mixing Valves (gpm)Model5 10 15 20320R 8 11 13 15 0 16 3.4425R 15 22 27 31 0 26 6.940R 36 51 62 72 0 58 16.050R 49 70 85 98 0 98 22.0NOTE: Maximum flow rates determined at 9 ft/sec pipeline velocity.Pressure Drop (psi)Min. SystemDraw-offMax. FlowC vAll dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com21

Rada ®ThermostaticFlexi-Flo 50R-50RThermostatic Central Recirculation System Controller isdesigned specifically to be installed as the primary controlassembly within a pumped recirculating hot water system.Capable of maintaining safe, accurate water temperaturesduring both peak and zero-demand “idling” periods, theFlexi-Flo 50R-50R features two Rada 50R thermostatic mixingvalves (page 21) piped in parallel. By combining thehigh flow capacity of two valves, Flexi-Flo 50R-50R has a flowcapacity of 193 gpm (731 lpm) at a 20 psi (1.4 bar) pressure drop.Flexi-Flo 50R-50R features two unique integral thermostatic returnlimiters that monitor recirculation return water temperaturesto prevent “temperature creep” within the circuit. Thermostaticreturn limiters eliminate the requirement for a fitted aquastatand reduce cycling wear and tear on the circulating pump.Flexi-Flo 50R-50R features a specially designed surplus valvethat effectively “stages out” one Rada 50R during periods whenthe system demand can be managed by a single valve. With aFlexi-Flo 50R-50R installed as the primary temperature controllerwithin a pumped recirculation system, there will be a zerominimum blended water flow rate/draw-off requirement.Solutions for Central Recirculation System ControlFlexi-Flo Systems Offer:Safety. Integral check valves prevent cross connection. A maximumtemperature locking feature is included. Integral thermostatic returnlimiters prevent “temperature creep” during zero-demand periods.Economy. Fully engineered, frame mounted, pre-piped andpressure-tested assembly reduces installation time. Designand functional simplicity, combination ball valve/strainers andeasy-access internal parts reduce maintenance time.20"(508 mm)RecirculationReturn 1"Return toHot WaterSupply 1"56-1/2"(1,434 mm)MixedFlow3" 19"(483 mm)28"(711 mm)Comfort. Maintains a steady outlet temperature by constantmonitoring and adjustment of recirculating hot water temperature.Legs CanBe RemovedCold WaterSupply 3"Hot WaterSupply 3"Technical Specifications•••••••••••3" (80 mm) inlets/outletPre-piped, pressure-tested, frame-mounted assemblyOperating pressuresMaximum: 150 psi (10 bar)Minimum: 10 psi (.7 bar)Maximum pressure drop 20 psi (1.4 bar)Maximum flow rate @ 9 ft/sec (2.7 m/sec): 193 gpm (731 lpm)ASSE 1017 and CSA B125 certified (Rada 50R)Flow coefficient (C v) 42.4Integral check valves and strainersIntegral thermometerDual thermostatic elementsShipping weight 477 lbs (216 kg)For a fully detailed certified drawing, refer to CDLW #1049.Ø.531 (4 Places)for Mountingto the Floor4" TYP(102 mm)43-5/8"(1,108 mm)6-3/8"(162 mm)45"(1,143 mm)Flexi-Flo Packages (gpm)—StandardModelPressure Drop (psi)Min. System5 10 15 20Draw-offMax. Flow C v50R-50R 97 137 168 193 0 193 42.450R-50R-50R 144 204 250 288 0 288 63.6NOTE: Maximum flow rates determined at 9 ft/sec pipeline velocity.All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.22Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com

Rada ®Solutions for Central Recirculation System ControlThermostaticFlexi-Flo 50R-50R-50RThermostatic Central Recirculation System Controller isdesigned specifically to be installed as the primary controlassembly within a pumped recirculating hot water system.Capable of maintaining safe, accurate water temperaturesduring both peak and zero-demand “idling” periods, the Flexi-Flo50R-50R-50R features three Rada 50R thermostatic mixing valves(page 21) piped in parallel. By combining the high flow capacityof three valves, Flexi-Flo 50R-50R-50R has a flow capacity of288 gpm (1,090 lpm) at a 20 psi (1.4 bar) pressure drop.Flexi-Flo 50R-50R-50R features three unique integral thermostaticreturn limiters that monitor recirculation return water temperatures toprevent “temperature creep” within the circuit. Thermostatic returnlimiters eliminate the requirement for a fitted aquastat and reducecycling wear and tear on the circulating pump.Flexi-Flo 50R-50R-50R features two specially designedsurplus valves that effectively “stage out” the second and thirdRada 50R during periods when system demand can be managedby a single valve. With a Flexi-Flo 50R-50R-50R installed asthe primary temperature controller within a pumped recirculationsystem, there will be a zero minimum blended water flowrate/draw-off requirement.Flexi-Flo Systems Offer:Safety. Integral check valves prevent cross connection. A maximumtemperature locking feature is included. Integral thermostatic returnlimiters prevent “temperature creep” during zero-demand periods.Economy. Fully engineered, frame mounted, pre-piped andpressure-tested assembly reduces installation time. Designand functional simplicity, combination ball valve/strainers andeasy-access internal parts reduce maintenance time.20"(508 mm)Legs CanBe RemovedRecirculationReturn 1"Return toHot WaterSupply 1"Cold WaterSupply 4"56-1/2"(1,434 mm)Mixed Flow4" 18-7/8"(479 mm) 32"(813 mm)Hot WaterSupply 4"Comfort. Maintains a steady outlet temperature by constantmonitoring and adjustment of recirculating hot water temperature.Technical Specifications•••••••••••4" (100 mm) inlets/outletPre-piped, pressure-tested, frame-mounted assemblyOperating pressuresMaximum: 150 psi (10 bar)Minimum: 10 psi (.7 bar)Maximum pressure drop 20 psi (1.4 bar)Maximum flow rate @ 9 ft/sec (2.7 m/sec): 288 gpm (1,090 lpm)ASSE 1017 and CSA B125 certified (Rada 50R)Flow coefficient (C v ) 63.6Integral check valves and strainersIntegral thermometerDual thermostatic elementsShipping weight 550 lbs (249 kg)For a fully detailed certified drawing, refer to CDLW #1051.Ø.531 (4 Places)for Mountingto the Floor4" TYP(102 mm)43-5/8"(1,108 mm)6-3/8"(162 mm)61"(1,549 mm)Flexi-Flo Packages (gpm)—StandardModelPressure Drop (psi)Min. System5 10 15 20Draw-offMax. Flow C v50R-50R 97 137 168 193 0 193 42.450R-50R-50R 144 204 250 288 0 288 63.6NOTE: Maximum flow rates determined at 9 ft/sec pipeline velocity.All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com23

Rada ®Solutions for Central Recirculation System ControlElectronicRada Solutions for Central Recirculation System Control—Electronic feature a series of eight Electronic Mixing Centers (EMC)designed for use in pumped recirculating hot water systems.The complete range has been designed to offer an unparalleledlevel of system temperature control through the use of precisionengineeredhydraulics with integrated electronic circuit technology.SizingRada EMC is available in two flow capacities. To select, simplymatch the required flow rate on the chart below with a pressuredrop acceptable to the system design. Armstrong uses theModified Hunter Curve, where applicable, when determiningsystem flow requirements.Data on the EMC series for Rada Solutions for Central RecirculationSystem Control can be found on pages 24 through 27. Certifieddrawings, specifications, installation and maintenance guides,and plumbing schematics are available by calling Armstrong at(269) 279-3602.Rada Electronic Mixing Centers (gpm)ModelPressure Drop (psi)5 10 15 20Min. SystemDraw-off*Max. Flow**EMC 1 36 51 62 72 0 58 16EMC 2 72 102 124 144 0 100 32* EMC 1 requires the circulating pump to operate continuously at a minimum flow rate of 2 gpm. EMC 2 requires the circulating pump to operate continuouslyat a minimum flow rate of 4 gpm. There is no minimum system draw-off flow requirement with this equipment.**Maximum flow rate determined at 9 ft/sec pipeline velocity.C vMixed FlowMixed ReturnFrom Hot Water SupplyTo Hot Water SupplyCold Water SupplySystem Layout- Legend -Recirculation PumpCheck ValveStop ValveIsolation ValveSinkShowerPOWERSUPPLYRada 32rmxAll dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.24Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com

Rada ®Solutions for Central Recirculation System ControlElectronicThe Central Recirculation SystemRada EMCs feature the 32rmx Electronic Mixing Valve. The32rmx is designed to be the primary controller for a recirculatinghot water circuit, as indicated by the schematic drawing below.This schematic is provided for concept and explanation purposesonly. Actual plumbing systems will differ slightly, based uponvariables such as the system designer’s preferences, the type ofwater heater selected and the specific site construction feasibility.Rada EMCs are supplied as pre-plumbed packages, each ofwhich differs slightly from this schematic.Adding the OptionsRada EMCs from Armstrong offer both the basic mixing center andmixing centers with a series of options and features. Additionally,each EMC includes a data interface port that allows the systemto be equipped with an alarm. The system can be programmed,monitored and controlled from a remote location and can beengaged with Armstrong’s energy optimization system (EOS)or a third-party building management system (BMS).A primary feature of the EMC models 13, 123, 23 and 223 isthe three-temperature programming capability. Using a RadaControl Module, the EMC can be site-programmed to deliverto a normal operating temperature for sanitary use; T1, anenergy-saving temperature for periods when the normaloperating temperature is not required; and T2, an elevatedsystem disinfection temperature.Energy Optimization System (EOS)To support the Rada EMC in applications where building/systemautomation is desired but where there is no opportunity to engagewith an exisiting third-party BMS, Armstrong offers EOS. EOSrequires a minimal investment in site-based hardware and thepurchase of our fee-based access to EOS on a protected Web site.EOS offers user graphics, data output and storage capability,mobile text messaging and site-audible output advisories,and remote system control, along with many other application/site-customized options.High TemperatureCircuit for Kitchens, etc.Mixed FlowKeyHotColdMixed WaterRadaControl ModulePC and BuildingManagement SystemInterface CapabilityOut-of-Temperature-Range SignalThree-temperature Programming CapabilityAlarm and/or SystemShutdown OptionTemp 2140°F/60°CNormal UseTypical System Temperature ControlEnergy Saving Disinfection of System Restoration of Safe TemperatureTemp 0Temp 1TimeAll dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com25

ElectronicRada ®Electronic Mixing CentersThe EMCs feature the Rada 32rmx electronic temperature controller.The EMC 1 will deliver up to 72 gpm (273 lpm) and comprisesall required installation components supplied pre-plumbed andpressure-tested, mounted to an enameled steel frame. Installingcontractor is required to make up to five standard union connectionsfor hot and cold supply in, blended water to the system, and systemand water heater return lines.The EMC 12 incorporates a circulating pump, while theEMC 13 adds the option of system thermal disinfection andenergy efficiency via a Rada Control Module.The “complete” EMC 123 brings together both of the above options.The EMC 2 series are as above with two 32rmx temperaturecontrollers installed in parallel for systems where flow ratesup to 150 gpm (568 lpm) are required.Solutions for Central Recirculation System ControlThe modern integrated circuit technology with precisionhydraulics of the 32rmx allows the EMC to deliver blendedwater economically at a safe, accurate temperature forsanitary use in recirculated hot water systems.The EMC supplies blended hot and cold water at a safe,predetermined temperature when any fixture in the buildingis in use.During periods of no system draw-off, the EMC will maintainthe temperature of the continuously flowing, pumpedrecirculating circuit.PerformanceThe improved accuracy possible with 32rmx controltechnology, combined with its data input/output communicationcapability, means:••••••••••Recirculated water control within 2°F (1°C) with minimalrecirculation of 2 gpm (7.6 lpm)*Accurate control of blended water drawn from the systemat a point of use within 2°F (1°C)*Minimal, 2°F (1°C) recirculation system temperature lossrequired for effective loop controlElimination of dangerous overnight or non-demand-period“temperature creep”Dual operation “set” and “actual” temperature display foreffective commissioning, adjustment and system monitoringVisual signal by display to show “error” mode or “out of range”system failure, coupled with output for audible alarm and/ordownstream solenoid valve relayProgramming via a PCSystem monitoring and control from a remote locationEngagement with a building managment system32rmx valve automatically shuts off the hot water flowupon cold water inlet supply failure32rmx valve automatically shuts off the hot water flowin the event of a power failure•ApplicationEMC provides premixed water for multiple showering, handwashing and bathing point-of-use fixtures where hot wateris supplied from either a storage-type or instantaneous/semi-instantaneous water heater.Suitable for installation in hotels, schools, correctional facilities,hospitals, nursing/assisted living homes, dormitories and othermultiple-occupant commercial, institutional, and industrialbuildings that are required to operate a continuously recirculatingpumped hot water system.Technical Specifications32rmx Temperature Controller•••Plated gunmetal body, enameled aluminum housing/cover,stainless steel primary internal componentsElectronics: 12V DC Solid State plug-in micro-electronic circuitryFlow ratesMaximum: 72 gpm at 20 psi pressure drop(272 lpm at 1.38 bar)Minimum: 32rmx: 2 gpm (7.6 lpm)System: There is no minimum draw-offrequirement from the system.Operating pressuresMaximum: 150 psi (10 bar)Minimum: 10 psi (.7 bar)LED digital readout“Self-check” integral “out of range” visual/audible alarmApprovals/certifications: ASSE 1017, CSA B125••••* Claim does not account for natural system temperature loss atdistant points within the system relative to pumped water velocityand ambient temperature.All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.26Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com

Rada ®Solutions for Central Recirculation System ControlElectronicElectronic Mixing Centers up to 72 gpm (273 lpm)EMC 1 is supplied as a mixing center that includes:• 32rmx electronic temperature controller• 1-1/2" Inlet/Outlet and 1" recirculation return piping• Inlet/return check valves• Inlet combination ball valve strainers• Pressure gauges• Inlet, system blend and return line thermometers• Isolation valves• 110V/12V UL-listed transformer enclosed in a NEMA4X enclosure• Low voltage control wiring with protective conduitEMC 12 is supplied as EMC 1 with a pre-wired 1/12 HPcirculating pump rated at 10 gpm (38 lpm) at 15 ft of head.EMC 13 is supplied as EMC 1 with a Rada Control Module forprogramming energy efficiency and thermal disinfection modes.EMC 123 is supplied as EMC 12 with a Rada Control Module forprogramming energy efficiency and thermal disinfection modes.Electronic Mixing Centers up to 144 gpm (545 lpm)EMC 2 is supplied as mixing center that includes:• Two 32rmx electronic temperature controllers• 3" Inlet/Outlet and 1-1/2" recirculation return piping• Inlet/return check valves• Inlet combination ball valve strainers• Pressure gauges• Inlet, system blend and return line thermometers• Isolation valve• System balancing valves• 110V/12V UL-listed transformer enclosed in a NEMA4X enclosure• Low voltage control wiring with protective conduitEMC 22 is supplied as EMC 2 with a pre-wired 1/6 HPcirculating pump rated at 10 gpm (38 lpm) at 30 ft of head.TECHNICAL NOTES: A fully licensed electrician will berequired to connect a GFI-protected 110V power supply to thepower supply enclosure provided on the EMC. All subsequentlow voltage control wiring is supplied factory completed andtested, housed in a protective conduit.EMC models that include a circulating pump will require a fullylicensed electrician to connect a GFI-protected 110V powersupply directly to the pump connection point provided.The 110V power supply for the power supply enclosure andthe pump must be on the same circuit, protected by the samecircuit breaker.Further wiring detail is provided in the Rada EMC installationand maintenance guide.38-13/16"(986 mm)8-3/8"(213 mm)BallValve(3)7-3/8"(187 mm)Ball FlowIndicatorRada 32rmx13-3/8"(340 mm)PressureGauge (2)TemperatureGauge (4)Teew/Plug"Terminator"Valve (2)Inline CheckValve (2)EMC 149-3/4"(1,264 mm)6-3/4"(171 mm)Swing CheckValvePOWERSUPPLYEMC 23 is supplied as EMC 2 with a Rada Control Module forprogramming energy efficiency and thermal disinfection modes.8-3/8"(213 mm)17-3/8"(441 mm)22-3/8"(568 mm)6-3/4"(171 mm)EMC 223 is supplied as EMC 22 with a Rada Control Module forprogramming energy efficiency and thermal disinfection modes.For fully detailed certified drawings, please refer to the listbelow and consult your local representative, Armstrongdirectly or our Web site.EMC 1 CDLW #1105EMC 2 CDLW #1109EMC 12 CDLW #1106EMC 22 CDLW #1110EMC 13 CDLW #1107EMC 23 CDLW #1111EMC 123 CDLW #1108EMC 223 CDLW #111256-1/4"(1,429 mm)Ball FlowIndicatorRada 32rmxRada 32rmxPressure Gauge (2)TemperatureGauge (5)Strainer (2)Tee w/PlugBall Valve (10)Inline CheckValve (5)Flow Meter (2)BalancingValve (2)POWERSUPPLY68-3/4"(1,746 mm)EMC 2All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com27

Rada ®Solutions for Emergency Fixture ControlRada Z358 series has been designed specifically to provide tepidwater to emergency fixtures as detailed in ANSI Z358.1-1998.ANSI Z358.1-1998 Related ExcerptsSections 4.6.6, 5.4.6, 7.4.6, 9.4.5: “Delivered flushingfluid temperature shall be tepid.”Definition Tepid: Moderately warm; lukewarm.Section 4.1: “Emergency showerheads shall be capableof delivering a minimum of 75.5 liters per minute (20 gpm).”Section 5.1.5: “Eyewash equipment shall be capable ofdelivering flushing fluid to the eyes not less than 1.5 lpm(0.4 gpm).”Section 7.1.4: “Plumbed eye/facewash equipment shallbe capable of delivering flushing fluid to the eyes not lessthan 11.4 liters per minute (3.0 gpm).”Section 8.1: “Drench hoses shall deliver a minimum of11.4 liters per minute of flushing fluid (3.0 gpm).”The SolutionRada Electronic Mixing Centers (EMC) offer a packaged solutionwith an unparalleled level of accuracy, control and reliability. TheEMC is available with site-programmable elements such as anoff-hour high temperature flush and/or a system dump to controlbacteria. In addition, the “out of range” visual and audible alertfeature gives the system operator a vitally important audit capability.The superior technology available with the EMC allows Armstrong,the system designer, the installer and the facility owner/operatorto manufacture, specify, install and operate a system that canclearly be termed state-of-the-art.For details on the EMC, including the products’ EOSand third-party BMS interface capability, refer to previouspages 24 through 27, Rada Solutions for Central RecirculationSystem Control—Electronic.Point of UseRada Z358-20 and Z358-40 Thermostatic Mixing Valves aresuitable for installation at or near a point of use for directtepid water supply to an emergency fixture or grouping offixtures. Groups of fixtures must meet the valve’s flow capacityrequirements if there is a potential for simultaneous operation.Central Recirculation System ControlRecirculated, tepid loops serving emergency fixtures arefundamentally different in application from standard institutionalhot water recirculating systems. The limited system draw-offrequirement of the emergency fixture circuit portends limitedsystem audit capability and a subsequent underlying systemmanagement concern.In other words, institutional loops with frequent draw-offs atdiverse flow rates for hand washing, showering and bathingcommunicate with building management on a regular basis(the lavatory is too hot, the shower is too cold, etc.). The capacityexists to make adjustments and corrections.Closed loops for emergency fixtures, on the other hand, requireinfrequent but often a large and sudden volume of water that mustbe in the correct temperature range every time. Without somelevel of manual or automated system monitoring and correction,along with an aggressive system maintenance protocol, tepidloops present a challenge.Therefore, Rada Thermostatic Mixing Valves are not recommendedfor installation as central controllers for recirculated tepid waterloops. Consult factory for details.All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.28Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com

Rada ®Point of UseSolutions for Emergency Fixture ControlHot WaterSupplyRada Z358Mixed FlowBy-Pass forMaintenance/Valve ServicingCold WaterSupplyCentral Recirculation System ControlSystem LayoutLegendCheck ValveEmergencyShowerStationIsolation ValveStop ValveStrainerThermometerMixed Flow Mixed Return System LayoutFrom Hot Water SupplyTo Hot Water SupplyCold Water Supply- Legend -Recirculation PumpCheck ValveIsolation ValveEmergency ShowerStationPOWERSUPPLYRada 32rmxAll dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com29

Rada ®Solutions for Emergency Fixture ControlRada Z358-20Rada Z358-20 has been designed specifically to provide tepidwater to emergency fixtures as detailed in ANSI Z358.1-1998specifications.Z358-20 is a Thermostatic Mixing Valve of “sealed for life”disposable cartridge construction. Compact design and topor bottom blended water outlet make Z358-20 ideal for OEM,new construction and upgrade/retrofit installations.For Emergency Drench Showers. Rada Z358-20 will pass ANSIspecified minimum of 20 gpm/76 lpm (actual 23 gpm/87 lpm)and will flow a minimum of 10 gpm (38 lpm) from direct coldwater supply in hot failure mode at 40 psi (2.7 bar) maintainedequal inlet supply pressure.For Emergency Eye Wash Stations. For single or multiplefixture installation, Rada Z358-20 will control accurately atflow rates from 20 gpm (76 lpm) to below 1 gpm (3.8 lpm).In flow applications between 20 gpm (76 lpm) and 10 gpm(38 lpm), Z358-20 will pass approximately 50% of original flowsetting in hot failure mode.In flow applications between 10 gpm (38 lpm) and 5 gpm (19 lpm),Z358-20 will pass approximately 80% of original flow setting inhot failure mode.In flow applications below 5 gpm (19 lpm), Z358-20 will passapproximately 95% of original flow setting in hot failure mode.Rada Z358-20 Offers:User Safety•Site Adjustable—Mechanical maximum-temperature limit stopand single-temperature locking features as a function of thetemperature control handle design.• Thermal shutdown feature is designed to protect user fromunsafe water temperatures or hot water/chemical reaction shouldcold supply be interrupted during use.• Unique constant cold water flow design ensures that in theevent of a hot supply failure the Rada Z358-20 will allow coldwater to flow to fixture.• Unique constant cold water flow feature allows the inlet hotwater supply to be set within a prescribed range, thus limitingthe potential outlet temperature to a safe maximum in theevent of misadjustment, unauthorized tampering or thermostatfailure. This feature presumes that the correct initialcommissioning was performed and that the cold watersupply has not been interrupted.Refer to Table 1: Safe Maximum Inlet Hot WaterSupply Temperature.Economy. New technology and state-of-the-art polymer internalcomponents reduce cost and resist mineral deposition. Singlecorrosion-resistant “no spare parts” replaceable cartridge designreduces field maintenance time.Comfort. Maintains a constant outlet temperature, which canbe preset to meet ANSI Z358.1-1998 requirements. Controlledblended water at emergency fixtures will allow a user in distressto access flushing water at temperatures where required exposurecan be sustained.IMPORTANT NOTE: The replaceable cartridge design and functionalsimplicity of the Rada Z358-20 make the regular preventivemaintenance (PM) program, which this type of applicationmandates, easier to effect.Technical Specifications•••1" (25 mm) NPT inlets and 3/4" (20 mm) NPT outlet(s)Chrome-plated DZR brass/polymer construction with bright“Safety Yellow” control handle.Operating pressures must be nominally equalMaximum: 100 psi (6.9 bar)*Minimum: 40 psi (2.7 bar) drench showers20 psi (1.4 bar) eye washIntegral thermometer•• Integral replaceable cartridge-type inlet check valves• Dual thermostatic elements• Integral replaceable inlet strainers• 10 gpm (38 lpm) constant cold water flow in hot failure modeto open outlet at 40 psi (2.7 bar) pressure drop• Shipping weight 10 lb (4.5 kg)*High water pressures may deliver a volume and spray forcethat are injurious to the user. Check with fixture manufactureror regulate water pressures within acceptable range.Table 1.Safe Maximum Inlet Hot Water Supply TemperatureRefer to this table to correlate inlet hot water supplytemperature with anticipated seasonal ground watertemperatures (use best case/warmest scenario).For details, reference Safety Bullet #4 at left.Table 1Inlet HotCold Water Temperature °FWater Temp. °F 33 40 50 60 70120 80 84 88 93 97130 86 89 94 98 103140 91 95 99 104 108150 96 100 105 109 114160 102 106 110 115 119175 110 114 118 123 127185 116 119 124 128 133NOTE: Shaded area indicates potential user risk.Table 2.Minimum Inlet Hot Water Supply TemperatureRada Z358-20 will require a minimum inlet hot water supplytemperature, which must be correlated with the anticipatedseasonal inlet cold water supply temperature (use worstcase/coldest scenario) as per Table 2 below.Table 2BlendCold Water Temperature °FTemp. °F 33 40 50 60 7080 120 113 105 97 8885 129 122 114 106 9790 138 132 123 115 10795 147 141 132 124 116NOTE: Shaded area represents Armstrong’s interpretation of “tepid” water.For expanded versions of Tables 1 and 2, consult factory orproduct installation and maintenance manual.All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.30Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com

Rada ®Solutions for Emergency Fixture ControlØ3-1/4"(83 mm)7-3/8"(187 mm)2"(52 mm)HotWaterColdWater4x Ø 5/32"on 1.75 DBC4-7/8"(124 mm)BlendedWater5-7/8"(149 mm)For a fully detailed certified drawing, refer to CDLW #1063.Thermostatic Mixing Valves (gpm)ModelPressure Drop (psi)Min.5 10 15 20 25 30 35 40 45 50 FlowZ358-20 8 11 13 15 17 19 20 22 23 24 1Z358-40 15 22 27 31 35 38 41 44 46 49 2Operating SpecificationsMaximum Recommended Hot Water Supply Temperature130°F (54°C)Minimum Cold Water Supply Temperature33°F (1°C)Optimum Inlet to Outlet Temperature Differential Refer to Table 2Minimum Flow Rate1 gpm (3.8 lpm)Maximum Inlet Supply Pressure (supplies must be nominally equal)100 psi (6.9 bar)*Minimum Inlet Supply Pressure40 psi (2.7 bar) Drench Shower20 psi (1.4 bar) Eye Wash* High water pressures may deliver a volume and spray force that are injurious to the user. Check with fixture manufacturer or regulate water pressures within acceptable range.All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com31

Rada ®Rada Z358-20-FMCRada Z358-20-FMC is a Thermostatic Mixing Valve forremote/secure cabinet mount. This product has been designedspecifically to provide tepid water to emergency fixtures asdetailed in ANSI Z358.1-1998 specifications.Solutions for Emergency Fixture ControlRada Z358-20-FMC is supplied fully assembled and pressuretested,in an 18" x 24" x 8" stainless steel recessed cabinet witha 2" flange. Cabinet has a polished stainless steel piano-hingeddoor with a keyed cylinder lock.Rada Z358-20-FMC is supplied as standard under this modelnumber for top inlet hot and cold water supplies and a top outletwith a left-hand hinged door as indicated in the picture and drawing.Rada Z358-20-FMC can be specified/ordered with the followingpiping configurations under the following model numbers.Top inlets/bottom outletBottom inlets/bottom outletBottom inlets/top outletZ358-20-FMC-TBZ358-20-FMC-BB*Z358-20-FMC-BT**Z358-20-FMC-BB/BT are supplied with a right-hand hinged door.Technical Specifications•••••••3/4" (20 mm) NPT inlets and 3/4" NPT outletCabinet construction: 14 gauge #4 finish stainless steelCabinet outer flange: 2"Integral thermometerOutlet flow controlIntegral check stop/strainer/unionsRefer to Rada Z358-20, page 30, for mixing valve technical detailNOTE: Available as above in a Surface Mounted Cabinet of thesame size and specification, less recess flange, under modelnumber Z358-20-SMC. Use dimensions A, B and C only.For a fully detailed certified drawing, refer to CDLW #1082.A18" (457 mm)9-1/8"(232 mm)C8" (203 mm)2-5/16"(58 mm)D28" (711 mm)B24" (609 mm)RadaZ358-20Door Removedfor ClarityE22" (558 mm)All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.32Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com

Rada ®Solutions for Emergency Fixture ControlRada Z358-40Rada Z358-40 has been designed specifically to provide tepidwater to emergency fixtures as detailed in ANSI Z358.1-1998specifications.Z358-40 is a Thermostatic Mixing Valve designed specifically todeliver tepid water to emergency fixtures. Compact design andtop or bottom blended water outlet makes Z358-40 ideal forOEM, new construction and upgrade/retrofit installations.For Emergency Drench Showers. Rada Z358-40 will passANSI specified minimum of 20 gpm (75.7 lpm)—actual 46 gpm(147 lpm)—and will flow a minimum of 15 gpm (57 lpm) fromdirect cold water supply in hot failure mode at 45 psi (3 bar)pressure drop.For Emergency Eye Wash Stations. For single or multiplefixture installation, Rada Z358-40 will control accurately atflow rates from 40 gpm (151 lpm) to below 2 gpm (7 lpm)—actual 46 gpm @ 45 psi pressure drop.In 40 gpm (151 lpm) flow applications, Z358-40 will passapproximately 40% of original flow setting in hot failure mode.In 30 gpm (114 lpm) flow applications, Z358-40 will passapproximately 50% of original flow setting in hot failure mode.In 15 gpm (57 lpm) flow applications, Z358-40 will passapproximately 75% of original flow setting in hot failure mode.Rada Z358-40 OffersSafety.•Site Adjustable—Mechanical maximum temperature limitstop and single temperature locking features as functionsof the temperature control handle design.• Thermal shutdown feature is designed to protect user fromunsafe water temperatures or hot water/chemical reactionshould cold supply be interrupted during use.• Unique constant cold water flow design ensures that in theevent of a hot supply failure the Rada Z358-40 will allow coldwater to flow to fixture.• Unique constant cold water flow feature allows the inlethot water supply to be set within a prescribed range, thuslimiting the potential outlet temperature to a safe maximumin the event of misadjustment, unauthorized tampering orthermostat failure. This feature presumes that the correctinitial commissioning was performed and that the coldwater supply has not been interrupted.Refer to Table 1. Safe Maximum Inlet Hot Water SupplyTemperature, at right.Economy. New technology and state-of-the-art materials reducecost. Design and functional simplicity reduce field maintenanceand parts stocking requirements.Comfort. Maintains a constant outlet temperature, which canbe preset to meet ANSI Z358.1-1998 requirements. Controlledblended water at emergency fixtures will allow a user in distressto access flushing water at temperatures where required exposurecan be sustained.IMPORTANT NOTE: The replaceable cartridge design andfunctional simplicity of the Rada Z358-40 make the regularpreventative maintenance (PM) program, which this type ofapplication mandates, easier to effect.Technical Specifications••1-1/4" (32 mm) NPT inlets and 1-1/4" (32 mm) NPT outlet(s)Chrome-plated DZR brass/polymer construction with bright“Safety Yellow” control handle.Operating pressures must be nominally equalMaximum: 100 psi (6.9 bar)*Minimum: 40 psi (2.7 bar) drench showers20 psi (1.4 bar) eye washMaximum recommended pressure drop 75 psi (5 bar)Maximum recommended outlet flow 53 gpm (200 lpm)Integral thermometerIntegral replaceable cartridge-type inlet check valvesIntegral replaceable inlet strainersDual thermostatic elements15 gpm (57 lpm) constant cold water flow in hot failure modeto open outlet at 45 psi (3 bar) pressure dropShipping weight 18 lb (8 kg)•••••••••*High water pressures may deliver a volume and spray forcethat are injurious to the user. Check with fixture manufactureror regulate water pressures within acceptable range.Table 1.Safe Maximum Inlet Hot Water Supply TemperatureRefer to Table 1 below to correlate inlet hot water supplytemperature with anticipated seasonal ground water temperatures(use best case/warmest scenario). For details, referenceSafety benefit Bullet #4 at left.Table 1Inlet HotCold Water Temperature °FWater Temp. °F 33 40 50 60 70120 80 84 88 93 97130 86 89 94 98 103140 91 95 99 104 108150 96 100 105 109 114160 102 106 110 115 119175 110 114 118 123 127185 116 119 124 128 133NOTE: Shaded area indicates potential user risk.Table 2.Minimum Inlet Hot Water Supply TemperatureRada Z358-40 will require a minimum inlet hot water supplytemperature, which must be correlated with the anticipatedseasonal inlet cold water supply temperature (use worstcase/coldest scenario) as per Table 2 below.Table 2BlendCold Water Temperature °FTemp. °F 33 40 50 60 7080 120 113 105 97 8885 129 122 114 106 9790 138 132 123 115 10795 147 141 132 124 116NOTE: Shaded area represents Armstrong’s interpretation of “tepid” water.For expanded versions of Tables 1 and 2, consult factory orproduct installation and maintenance manual.All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com33

Rada ®Solutions for Emergency Fixture ControlHotWaterColdWater7-1/2" Ref(190 mm)BlendedWater7-7/8"(200 mm)1-1/4" NPT(32 mm)2-1/8"(55 mm)5-1/2"(141 mm)8-7/16"(214 mm)For a fully detailed certified drawing, refer to CDLW #1073.Thermostatic Mixing Valves (gpm)ModelPressure Drop (psi)Min.5 10 15 20 25 30 35 40 45 50Z358-20 8 11 13 15 17 19 20 22 23 24 1Z358-40 15 22 27 31 35 38 41 44 46 49 2FlowOperating SpecificationsMaximum Recommended Hot Water Supply Temperature130°F (54°C)Minimum Cold Water Supply Temperature33°F (1°C)Optimum Inlet to Outlet Temperature Differential Refer to Table 2Minimum Flow Rate2 gpm (7.6 lpm)Maximum Inlet Supply Pressure (supplies must be nominally equal)100 psi (6.9 bar)*Minimum Inlet Supply Pressure40 psi (2.7 bar) Drench Shower20 psi (1.4 bar) Eye Wash* High water pressures may deliver a volume and spray force that are injurious to the user. Check with fixture manufacturer or regulate water pressures within acceptable range.All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.34Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com

Rada ®Solutions for Emergency Fixture ControlRada Z358-40-FMCRada Z358-40-FMC is a Thermostatic Mixing Valve forremote/secure cabinet mount. This product has been designedspecifically to provide tepid water to emergency fixtures asdetailed in ANSI Z358.1-1998 specifications.Rada Z358-40-FMC is supplied fully assembled and pressuretested,in an 18" x 24" x 8" stainless steel recessed cabinet witha 2" flange. Cabinet has a polished stainless steel piano-hingeddoor with a keyed cylinder lock.Rada Z358-40-FMC is supplied as standard under this modelnumber for top inlet hot and cold water supplies and a topoutlet with a left-hand hinged door as indicated in the pictureand drawing.Rada Z358-40-FMC can be specified/ordered with the followingpiping configurations under the following model numbers.Top inlets/bottom outletBottom inlets/bottom outletBottom inlets/top outletZ358-40-FMC-TBZ358-40-FMC-BB*Z358-40-FMC-BT**Z358-40-FMC-BB/BT are supplied with a right-hand hinged door.Technical Specifications•••••••1"(25 mm) NPT inlets and 1" NPT outletCabinet construction: 14 gauge #4 finish stainless steelCabinet outer flange: 2"Integral thermometerOutlet flow controlIntegral check stop/strainer/unionsRefer to Rada Z358-40, page 33, for mixing valve technical detailNOTE: Available as above in a Surface Mounted Cabinet of thesame size and specification, less recess flange, under modelnumber Z358-40-SMC. Use dimensions A, B and C only.For a fully detailed certified drawing, refer to CDLW #1085.A18" (457 mm)10-1/4"(260 mm)C8" (203 mm)2-5/16"(58 mm)D28" (711 mm)B24" (609 mm)RadaZ358-40Door Removedfor ClarityE22" (558 mm)All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com35

Sample SpecificationsRada ®Single Point and Zoned/Group Control SystemsRada 110Thermostatic Mixing Valve (TMV) of DZR brass/stainless steel.TMV shall have dual 3/8" NPT male compression fitting inletswith integral spring loaded check valves and dual 3/8" malecompression fitting outlets. TMV shall be equipped with maximumtemperature limiting and single temperature locking feature.TMV shall be capable of controlling mixed water temperatures+/-3°F at flow rates between .5 and 5 gpm and shall havethe capability to completely shut off outlet flow prior to a 5°Ftemperature rise/fall in the event of a failure of either inlet supply.TMV shall be capable of delivering a mixed water temperaturethat is within 5°F of either inlet supply temperature.TMV shall be compliant with ASSE Standard 1016 and shallbe so certified and identified.All as Rada 110 supplied by Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.Rada 215Thermostatic Mixing Valve (TMV) of DZR brass/stainlesssteel/polymer construction. TMV shall have 1/2" NPT male inletswith integral spring loaded check valves and strainers and arear facing mixed water outlet. TMV shall be equipped withmaximum temperature limiting and single temperature lockingfeature and shall be supplied with both a temperature controltrim set and a tamperproof locking shroud.TMV shall be so designed that all of the internal operatingcomponents are enclosed in a one-piece, “sealed for life”replaceable cartridge for ease of service. TMV shall be capableof controlling mixed water temperatures +/-2°F at flow ratesbetween .5 and 11 gpm and shall have the capability tocompletely shut off outlet flow prior to a 5°F temperature rise/fall in the event of a failure of either inlet supply. TMV shall becapable of delivering a mixed water temperature that is within5°F of either inlet supply temperature.All as Rada 215 supplied by Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.Rada 320Thermostatic Mixing Valve (TMV) of chrome-plated DZR brassconstruction. TMV shall have 1" NPT male inlets with integralspring loaded check valves and strainers and an optional top orbottom mixed water outlet. TMV shall be equipped with a maximumtemperature limiting and single temperature locking feature.TMV shall be so designed that all of the internal operatingcomponents are enclosed in a one-piece, “sealed for life”replaceable cartridge for ease of service. TMV shall be capableof controlling mixed water temperatures +/-2°F at flow ratesbetween 1 and 24 gpm and shall have the capability tocompletely shut off outlet flow prior to a 5°F temperature rise/fall in the event of a failure of either inlet supply. TMV shall becapable of delivering a mixed water temperature that is within5°F of either inlet supply temperature.TMV shall have dual thermostats for increased accuracy andto provide redundancy in case of individual thermostat failure.TMV shall be compliant with ASSE Standard 1017 and CSA B125and shall be so certified and identified.All as Rada 320 supplied by Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.Rada 320DThermostatic Mixing Valve (TMV) of chrome-plated DZRbrass construction. TMV shall have 3/4" NPT inlets with fittedcombination union/check stop/strainers and outlet stop valveand thermometer. TMV shall be equipped with a maximumtemperature limiting and single temperature locking feature.TMV shall be so designed that all of the internal operatingcomponents are enclosed in a one-piece, “sealed for life”replaceable cartridge for ease of service. TMV shall becapable of controlling mixed water temperatures +/-2°F atflow rates between 1 and 24 gpm and shall have the capabilityto completely shut off outlet flow prior to a 5°F temperaturerise/fall in the event of a failure of either inlet supply. TMV shallbe capable of delivering a mixed water temperature that is within5°F of either inlet supply temperature.TMV shall be compliant with ASSE Standard 1017 and CSA B125and shall be so certified and identified.All as Rada 320D supplied by Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.Rada 320DCThermostatic Mixing Valve (TMV) of chrome-plated DZRbrass construction. TMV shall have 3/4" NPT inlets with fittedcombination union/check stop/strainers and outlet stop valveand thermometer. TMV shall be equipped with a maximumtemperature limiting and single temperature locking feature.TMV shall be so designed that all of the internal operatingcomponents are enclosed in a one-piece, “sealed for life”replaceable cartridge for ease of service. TMV shall becapable of controlling mixed water temperatures +/-2°F atflow rates between 1 and 24 gpm and shall have the capabilityto completely shut off outlet flow prior to a 5°F temperaturerise/fall in the event of a failure of either inlet supply. TMV shallbe capable of delivering a mixed water temperature that is within5°F of either inlet supply temperature.Assembly components and associated fittings shall have aheavy duty nickel-plated finish.TMV shall be compliant with ASSE Standard 1017 and CSA B125and shall be so certified and identified.All as Rada 320DC supplied by Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.36Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com

Sample SpecificationsRada ®Single Point and Zoned/Group Control SystemsRada 320-FMCThermostatic Mixing Valve (TMV) shall be of chrome-platedDZR brass construction and shall be so designed that all ofthe internal operating components are enclosed in a one-piece,“sealed for life” replaceable cartridge for ease of service.TMV shall have integral combination inlet check stop/union/strainers and shall be equipped with a maximum temperaturelimiting and single temperature locking feature.TMV shall be capable of controlling mixed water temperatures+/-2°F at flow rates between 1 and 24 gpm and shall havethe capability to completely shut off outlet flow prior to a 5°Ftemperature rise/fall in the event of a failure of either inlet supply.TMV shall be capable of delivering a mixed water temperaturethat is within 5°F of either inlet supply temperature.TMV shall have dual thermostats for increased accuracy andto provide redundancy in case of individual thermostat failure.TMV shall be compliant with ASSE Standard 1017 andCSA B125 and shall be so certified and identified.TMV shall be supplied fully assembled and pressure-tested, withoutlet stop valve enclosed in an 18" x 24" x 8" stainless steelrecessed cabinet with a 2" flange. Cabinet shall have a polishedstainless steel piano-hinged door with keyed cylinder lock.Please select option.• Cabinet shall be supplied with 3/4" NPT top inlets anda 3/4" NPT top outlet (standard).• Cabinet shall be supplied with 3/4" NPT top inlets anda 3/4" NPT bottom outlet (TB).• Cabinet shall be supplied with 3/4" NPT bottom inlets anda 3/4" NPT bottom outlet (BB).• Cabinet shall be supplied with 3/4" NPT bottom inlets anda 3/4" NPT top outlet (BT).Please use suffix SMC where appropriate to call out SurfaceMounted Cabinet.As all Rada 320-FMC supplied by Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.Rada 425Thermostatic Mixing Valve (TMV) of chrome-plated DZR brassconstruction with stainless steel internal operating mechanism.TMV shall have 1-1/4" NPT male inlets with integral springloaded check valves and strainers and an optional top or bottommixed water outlet. TMV shall be equipped with a maximumtemperature limiting and single temperature locking feature.TMV shall be capable of controlling mixed water temperatures+/-2°F at flow rates between 2 and 48 gpm and shall havethe capability to completely shut off outlet flow prior to a 5°Ftemperature rise/fall in the event of a failure of either inlet supply.TMV shall be capable of delivering a mixed water temperaturethat is within 5°F of either inlet supply temperature.TMV shall have dual thermostats for increased accuracy andto provide redundancy in case of individual thermostat failure.TMV shall be compliant with ASSE Standard 1017 and CSA B125and shall be so certified and identified.All as Rada 425 supplied by Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.Rada 425DThermostatic Mixing Valve (TMV) of chrome-plated DZR brassconstruction with stainless steel internal operating mechanism.TMV shall have 1" NPT inlets with fitted combination union/check stop/strainers, and outlet stop valve and thermometer.TMV shall be equipped with a maximum temperature limitingand single temperature locking feature.TMV shall be capable of controlling mixed water temperatures+/-2°F at flow rates between 2 and 48 gpm and shall havethe capability to completely shut off outlet flow prior to a 5°Ftemperature rise/fall in the event of a failure of either inlet supply.TMV shall be capable of delivering a mixed water temperaturethat is within 5°F of either inlet supply temperature.TMV shall be compliant with ASSE Standard 1017 and CSA B125and shall be so certified and identified.All as Rada 425D supplied by Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com37

Sample SpecificationsRada ®Single Point and Zoned/Group Control SystemsRada 425DCThermostatic Mixing Valve (TMV) of chrome-plated DZR brassconstruction with stainless steel internal operating mechanism.TMV shall have 1" NPT inlets with fitted combination union/check stop/strainers, and outlet stop valve and thermometer.TMV shall be equipped with a maximum temperature limitingand single temperature locking feature.Rada 40Thermostatic Mixing Valve (TMV) shall be of brass constructionwith stainless steel internal operating mechanism. TMV shallhave 1-1/2" NPT inlets with integral spring loaded check valvesand rear facing mixed water outlet. TMV shall be equipped withremovable temperature adjustment key with lockshield for singletemperature lock out capability.TMV shall be capable of controlling mixed water temperatures+/-2°F at flow rates between 2 and 48 gpm and shall havethe capability to completely shut off outlet flow prior to a 5°Ftemperature rise/fall in the event of a failure of either inlet supply.TMV shall be capable of delivering a mixed water temperaturethat is within 5°F of either inlet supply temperature.TMV shall have dual thermostats for increased accuracy andto provide redundancy in case of individual thermostat failure.Assembly components and associated fittings shall have aheavy duty nickel-plated finish.TMV shall be compliant with ASSE Standard 1017 and CSA B125and shall be so certified and identified.All as Rada 425DC supplied by Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.Rada 425-FMCThermostatic Mixing Valve (TMV) of chrome-plated DZR brassconstruction with stainless steel internal operating mechanism.TMV shall have integral combination inlet check stop/union/strainers and shall be equipped with a maximum temperaturelimiting and single temperature locking feature.TMV shall be capable of controlling mixed water temperatures+/-2°F at flow rates between 2 and 48 gpm and shall havethe capability to completely shut off outlet flow prior to a 5°Ftemperature rise/fall in the event of a failure of either inlet supply.TMV shall be capable of delivering a mixed water temperaturethat is within 5°F of either inlet supply temperature.TMV shall be compliant with ASSE Standard 1017 and CSA B125and shall be so certified and identified.TMV shall be supplied fully assembled and pressure-tested, withoutlet stop valve enclosed in an 18" x 24" x 8" stainless steelrecessed cabinet with a 2" flange. Cabinet shall have a polishedstainless steel piano-hinged door with keyed cylinder lock.TMV shall be capable of controlling mixed water temperatures+/-2°F at flow rates between 2 and 72 gpm and shall have thecapability to reduce outlet flow to seepage prior to a 5°Ftemperature rise/fall in the event of a failure of either inlet supply.TMV shall be capable of delivering a mixed water temperaturethat is within 18°F of either inlet supply temperature.TMV shall have dual thermostats for increased accuracy andto provide redundancy in case of individual thermostat failure.TMV shall be compliant with ASSE Standard 1017 and CSA B125and shall be so certified and identified.All as Rada 40 supplied by Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.Rada 50Thermostatic Mixing Valve (TMV) shall be of brass constructionwith stainless steel internal operating mechanism. TMV shallhave 2" NPT inlets with integral spring loaded check valvesand rear facing mixed water outlet. TMV shall be equipped withremovable temperature adjustment key with lockshield for singletemperature lock out capability.TMV shall be capable of controlling mixed water temperatures+/-2°F at flow rates between 2 and 98 gpm and shall have thecapability to reduce outlet flow to seepage prior to a 5°Ftemperature rise/fall in the event of a failure of either inlet supply.TMV shall be capable of delivering a mixed water temperaturethat is within 18°F of either inlet supply temperature.TMV shall have dual thermostats for increased accuracy andto provide redundancy in case of individual thermostat failure.TMV shall be compliant with ASSE Standard 1017 and CSA B125and shall be so certified and identified.All as Rada 50 supplied by Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.Please select option.• Cabinet shall be supplied with 1" NPT top inlets anda 1" NPT top outlet (standard).• Cabinet shall be supplied with 1" NPT top inlets anda 1" NPT bottom outlet (TB).• Cabinet shall be supplied with 1" NPT bottom inlets anda 1" NPT bottom outlet (BB).• Cabinet shall be supplied with 1" NPT bottom inlets anda 1" NPT top outlet (BT).Please use suffix SMC where appropriate to call out SurfaceMounted Cabinet.As all Rada 425-FMC supplied by Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.38Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com

Sample SpecificationsRada ®Solutions for Central Recirculation System ControlRada 320RThermostatic Mixing Valve Assembly (TMVA) shall have 3/4"inlets/outlet and shall pass a minimum 15 gpm in a recirculatinghot water system at peak demand at a 20 psi maximum pressuredrop. TMVA shall be fitted with an integral thermostatic returnlimiter to maintain circuit temperature during no-demand periods.Rada 425RThermostatic Mixing Valve Assembly (TMVA) shall have 1" inlets/outlet and shall pass a minimum 31 gpm in a recirculating hotwater system at peak demand at a 20 psi maximum pressure drop.TMVA shall be fitted with an integral thermostatic return limiterto maintain circuit temperature during no-demand periods.TMVA shall be capable of maintaining system temperaturewithout exceeding set point with no required minimum flow ratethrough the TMVA or minimum draw-off from the system.TMVA shall be equipped with a maximum temperature limitingand single temperature locking feature.TMVA shall be supplied pre-piped with hot inlet, cold inlet, mixedwater outlet and mixed return inlet with said thermostatic returnlimiter. TMVA shall also include as standard, integral inlet strainers,mixed return sight flow indicator, outlet thermometer and inletsupply, mixed return and return to heat source check valves.TMV shall have dual thermostats for increased accuracy andto provide redundancy in case of individual thermostat failure.TMV shall be compliant with ASSE Standard 1017 and CSA B125and shall be so certified and identified.All as Rada 320R supplied by Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.Rada 40RThermostatic Mixing Valve Assembly (TMVA) shall have 1-1/2"inlets/outlet and shall pass a minimum 72 gpm in a recirculatinghot water system at peak demand at a 20 psi maximum pressuredrop. TMVA shall be fitted with an integral thermostatic returnlimiter to maintain circuit temperature during no-demand periods.TMV shall be equipped with removable temperature adjustmentkey with lockshield for single temperature lock out capability.TMVA shall be capable of maintaining system temperaturewithout exceeding set point with no required minimum flow ratethrough the TMVA or minimum draw-off from the system.TMVA shall be supplied pre-piped with hot inlet, cold inlet, mixedwater outlet and mixed return inlet with said thermostatic returnlimiter. TMVA shall also include as standard, mixed return sightflow indicator, outlet thermometer and inlet supply, mixed returnand return to heat source check valves.TMV shall have dual thermostats for increased accuracy andto provide redundancy in case of individual thermostat failure.TMV shall be compliant with ASSE Standard 1017 and CSA B125and shall be so certified and identified.All as Rada 40R supplied by Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.TMVA shall be capable of maintaining system temperaturewithout exceeding set point with no required minimum flow ratethrough the TMVA or minimum draw-off from the system.TMVA shall be equipped with a maximum temperature limitingand single temperature locking feature.TMVA shall be supplied pre-piped with hot inlet, cold inlet, mixedwater outlet and mixed return inlet with said thermostatic returnlimiter. TMVA shall also include as standard, integral inlet strainers,mixed return sight flow indicator, outlet thermometer and inletsupply, mixed return and return to heat source check valves.TMV shall have dual thermostats for increased accuracy andto provide redundancy in case of individual thermostat failure.TMV shall be compliant with ASSE Standard 1017 and CSA B125and shall be so certified and identified.All as Rada 425R supplied by Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.Rada 50RThermostatic Mixing Valve Assembly (TMVA) shall have 2"inlets/outlet and shall pass a minimum 98 gpm in a recirculatinghot water system at peak demand at a 20 psi maximum pressuredrop. TMVA shall be fitted with an integral thermostatic returnlimiter to maintain circuit temperature during no-demand periods.TMVA shall be capable of maintaining system temperaturewithout exceeding set point with no required minimum flow ratethrough the TMVA or minimum draw-off from the system.TMV shall be equipped with removable temperature adjustmentkey with lockshield for single temperature lock out capability.TMVA shall be supplied pre-piped with hot inlet, cold inlet,mixed water outlet and mixed return inlet with said thermostaticreturn limiter. TMVA shall also include as standard, mixed returnsight flow indicator, outlet thermometer and inlet supply, mixedreturn and return to heat source check valves.TMV shall have dual thermostats for increased accuracy andto provide redundancy in case of individual thermostat failure.TMV shall be compliant with ASSE Standard 1017 and CSA B125and shall be so certified and identified.All as Rada 50R supplied by Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com39

Rada ®Sample SpecificationsSolutions for Central Recirculation System ControlFlexi-Flo 50R-50RThermostatic Mixing Valve Assembly (TMVA) shall have 3"inlets and a 3" outlet and shall pass a minimum 193 gpm ina recirculating hot water system at peak demand at a 20 psimaximum pressure drop. TMVA shall be capable of maintainingsystem temperature without exceeding set point with no requiredminimum flow rate through the TMVA or minimum draw-off fromthe system.TMVA shall include two Rada 50R Thermostatic Mixing Valvespiped in parallel with integral thermostatic return limiters whichmaintain circuit temperature during no-demand periods.Each TMV shall be equipped with removable temperatureadjustment key with lockshield for single temperature lockout capability.TMV shall have dual thermostats for increased accuracy andto provide redundancy in case of individual thermostat failure.TMV shall be compliant with ASSE Standard 1017 and CSA B125and shall be so certified and identified.TMVA shall be supplied pre-piped and pressure-tested, with hotinlet, cold inlet, mixed water outlet and mixed return inlet withsaid thermostatic return limiters. All connection points shall havefitted unions. TMVA shall also include as standard, integral inletcombination ball valve/strainers, mixed return sight flow indicators,outlet thermometer and inlet supply, mixed return and return toheat source check valves.Complete assembly shall be supplied mounted on a heavy duty,freestanding angle iron frame.All as Flexi-Flo 50R-50R supplied by Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.Flexi-Flo 50R-50R-50RThermostatic Mixing Valve Assembly (TMVA) shall have 4"flanged inlets and a 4" flanged outlet and shall pass a minimumof 288 gpm in a recirculating hot water system at peak demandat a 20 psi maximum pressure drop. TMVA shall be capable ofmaintaining system temperature without exceeding set point withno required minimum flow rate through the TMVA or minimumdraw-off from the system.TMVA shall include three Rada 50R Thermostatic Mixing Valvespiped in parallel with integral thermostatic return limiters whichmaintain circuit temperature during no-demand periods.Each TMV shall be equipped with removable temperatureadjustment key with lockshield for single temperature lockout capability.TMV shall have dual thermostats for increased accuracy andto provide redundancy in case of individual thermostat failure.Individual TMV shall be compliant with ASSE Standard 1017 andCSA B125 and shall be so certified and identified.TMVA shall be supplied pre-piped and pressure-tested, with hotinlet, cold inlet, mixed water outlet and mixed return inlet withsaid thermostatic return limiters. Mixed return connection pointsshall have fitted unions. TMVA shall also include as standard,integral inlet combination ball valve/strainers, mixed return sightflow indicators, outlet thermometer and inlet supply, mixedreturn and return to heat source check valves.Complete assembly shall be supplied mounted on a heavy duty,freestanding angle iron frame.All as Flexi-Flo 50R-50R-50R supplied by Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.40Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com

Sample SpecificationsRada ®Solutions for Central Recirculation System ControlRada EMC 1Electronic Mixing Center (EMC) shall deliver up to 75 gpm withno minimum system draw-off requirement and shall comprise:• 12V DC electronic temperature controller• Inlet/return check valves• Inlet combination ball valve strainers• Pressure gauges• Inlet, system blend and return line thermometers• Isolation valves• 110V UL-listed transformer enclosed in a NEMA 4X enclosure• Low voltage control wiring with protective conduitAll required installation components shall be supplied pre-plumbedand pressure-tested, mounted to an enameled steel frameterminating in five standard union connections for hot and coldsupply in, blended water to the system, and system and waterheater return lines.Electronic control box shall be supplied pre-wired, terminatingat a knockout for Romex or BX cable connector.Temperature controller shall be non-thermostatic and shall featureintegrated circuit board technology designed to deliver blendedwater economically at a safe, accurate temperature for sanitaryuse in recirculated hot water systems.Electronic Mixing Center will include all of the following capabilities:• Recirculated water control within +/-2°F with minimal recirculationof 2 gpm• Accurate control of blended water drawn from the systemat a point of use within +/-2°F• A minimum of 2°F recirculation system temperature lossrequired for effective loop control• A visual operation “set” and “actual” temperature display foreffective commissioning, adjustment and system monitoring• A visual signal by display to show “error” mode or “out ofrange” system failure, coupled with output for audible alarmand/or downstream solenoid valve relay• Integral two-way data port for PC and BMS interface• Automatic shutoff of hot water flow upon cold water inletsupply failure• Automatic shutoff of hot water flow in the event of a power failure• Temperature controller compliant with ASSE Standard 1017and CSA B125 and so certified and identifiedAll as Rada EMC 1 from Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.Rada EMC 12Electronic Mixing Center (EMC) shall deliver up to 75 gpm withno minimum system draw-off requirement and shall comprise:• 12V DC electronic temperature controller• Inlet/return check valves• Inlet combination ball valve strainers• Pressure gauges• Inlet, system blend and return line thermometers• Isolation valves• 110V UL-listed transformer enclosed in a NEMA 4X enclosure• Low voltage control wiring with protective conduit• 1/12 HP circulating pump rated at 10 gpm at 15 ft of headAll required installation components shall be supplied preplumbedand pressure-tested, mounted to an enameled steelframe terminating in five standard union connections for hotand cold supply in, blended water to the system, and systemand water heater return lines.Electronic control box shall be supplied pre-wired, terminatingat a knockout for Romex or BX cable connector.Temperature controller shall be non-thermostatic and shallfeature integrated circuit board technology designed to deliverblended water economically at a safe, accurate temperature forsanitary use in recirculated hot water systems.Electronic Mixing Center will include all of the following capabilities:• Recirculated water control within +/-2°F with minimal recirculationof 2 gpm• Accurate control of blended water drawn from the system ata point of use within +/-2°F• A minimum of 2°F recirculation system temperature lossrequired for effective loop control• A visual operation “set” and “actual” temperature display foreffective commissioning, adjustment and system monitoring• A visual signal by display to show “error” mode or “out ofrange” system failure, coupled with output for audible alarmand/or downstream solenoid valve relay• Integral two-way data port for PC and BMS interface• Automatic shutoff of hot water flow upon cold water inletsupply failure• Automatic shutoff of hot water flow in the event of a power failure• Temperature controller compliant with ASSE Standard 1017and CSA B125 and so certified and identifiedAll as Rada EMC 12 from Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com41

Rada ®Sample SpecificationsSolutions for Central Recirculation System ControlRada EMC 13Electronic Mixing Center (EMC) shall deliver up to 75 gpm withno minimum system draw-off requirement and shall comprise:• 12V DC electronic temperature controller• Inlet/return check valves• Inlet combination ball valve strainers• Pressure gauges• Inlet, system blend and return line thermometers• Isolation valves• 110V UL-listed transformer enclosed in a NEMA 4X enclosure• Low voltage control wiring with protective conduit• System control moduleAll required installation components shall be supplied pre-plumbedand pressure-tested, mounted to an enameled steel frameterminating in five standard union connections for hot and coldsupply in, blended water to the system, and system and waterheater return lines.Electronic control box shall be supplied pre-wired, terminatingat a knockout for Romex or BX cable connector.Temperature controller shall be non-thermostatic and shallfeature integrated circuit board technology designed to deliverblended water economically at a safe, accurate temperaturefor sanitary use in recirculated hot water systems.System control module shall feature integral timer and shallhave programming capability for timed automatic systemtemperature adjustment.Electronic Mixing Center will include all of the following capabilities:• Recirculated water control within +/-2°F with minimal recirculationof 2 gpm• Accurate control of blended water drawn from the systemat a point of use within +/-2°F• A minimum of 2°F recirculation system temperature lossrequired for effective loop control• A visual operation “set” and “actual” temperature display foreffective commissioning, adjustment and system monitoring• A visual signal by display to show “error” mode or “out ofrange” system failure, coupled with output for audible alarmand/or downstream solenoid valve relay• Integral two-way data port for PC and BMS interface• Automatic shutoff of hot water flow upon cold water inletsupply failure• Automatic shutoff of hot water flow in the event of a power failure• Temperature controller compliant with ASSE Standard 1017and CSA B125 and so certified and identifiedAll as Rada EMC 13 from Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.Rada EMC 123Electronic Mixing Center (EMC) shall deliver up to 75 gpm withno minimum system draw-off requirement and shall comprise:• 12V DC electronic temperature controllers• Inlet/return check valves• Inlet combination ball valve strainers• Pressure gauges• Inlet, system blend and return line thermometers• Isolation valves• 110V UL-listed transformer enclosed in a NEMA 4X enclosure• Low voltage control wiring with protective conduit• 1/12 HP circulating pump rated at 10 gpm at 15 ft of head• System control moduleAll required installation components shall be suppliedpre-plumbed and pressure-tested, mounted to an enameledsteel frame terminating in five standard union connectionsfor hot and cold supply in, blended water to the system, andsystem and water heater return lines.Electronic control box shall be supplied pre-wired, terminatingat a knockout for Romex or BX cable connector.Temperature controller shall be non-thermostatic and shall featureintegrated circuit board technology designed to deliver blendedwater economically at a safe, accurate temperature for sanitaryuse in recirculated hot water systems.System control module shall feature integral timer and shallhave programming capability for timed automatic systemtemperature adjustment.Electronic Mixing Center will include all of the following capabilities:• Recirculated water control within +/-2°F with minimal recirculationof 2 gpm• Accurate control of blended water drawn from the systemat a point of use within +/-2°F• A minimum of 2°F recirculation system temperature lossrequired for effective loop control• A visual operation “set” and “actual” temperature display foreffective commissioning, adjustment and system monitoring• A visual signal by display to show “error” mode or “out ofrange” system failure, coupled with output for audible alarmand/or downstream solenoid valve relay• Integral two-way data port for PC and BMS interface• Automatic shutoff of hot water flow upon cold water inletsupply failure• Automatic shutoff of hot water flow in the event of a power failure• Temperature controller compliant with ASSE Standard 1017and CSA B125 and so certified and identifiedAll as Rada EMC 123 from Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.42Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com

Sample SpecificationsRada ®Solutions for Central Recirculation System ControlRada EMC 2Electronic Mixing Center (EMC) shall deliver up to 150 gpm withno minimum system draw-off requirement and shall comprise:• Two 12V DC electronic temperature controllers• Inlet/return check valves• Inlet combination ball valve strainers• Pressure gauges• Inlet, system blend and return line thermometers• Isolation valve• System balancing valves• 110V UL-listed transformer enclosed in a NEMA 4X enclosure• Low voltage control wiring with protective conduitAll required installation components shall be supplied pre-plumbedand pressure-tested, mounted to an enameled steel frameterminating in five standard union connections for hot and coldsupply in, blended water to the system, and system and waterheater return lines.Electronic control box shall be supplied pre-wired, terminatingat a knockout for Romex or BX cable connector.Temperature controllers shall be non-thermostatic and shallfeature integrated circuit board technology designed to deliverblended water economically at a safe, accurate temperaturefor sanitary use in recirculated hot water systems.Electronic Mixing Center will include all of the following capabilities:• Recirculated water control within +/-2°F with minimal recirculationof 4 gpm• Accurate control of blended water drawn from the system at apoint of use within +/-2°F• A minimum of 2°F recirculation system temperature lossrequired for effective loop control• A visual operation “set” and “actual” temperature display foreffective commissioning, adjustment and system monitoring• A visual signal by display to show “error” mode or “out ofrange” system failure, coupled with output for audible alarmand/or downstream solenoid valve relay• Integral two-way data port for PC and BMS interface• Automatic shutoff of hot water flow upon cold water inletsupply failure• Automatic shutoff of hot water flow in the event of a power failure• Temperature controllers compliant with ASSE Standard 1017and CSA B125 and so certified and identifiedAll as Rada EMC 2 from Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.Rada EMC 22Electronic Mixing Center (EMC) shall deliver up to 150 gpm withno minimum system draw-off requirement and shall comprise:• Two 12V DC electronic temperature controllers• Inlet/return check valves• Inlet combination ball valve strainers• Pressure gauges• Inlet, system blend and return line thermometers• Isolation valves• System balancing valves• 110V UL-listed transformer enclosed in a NEMA 4X enclosure• Low voltage control wiring with protective conduit• 1/6 HP circulating pump rated at 10 gpm at 30 ft of headAll required installation components shall be supplied pre-plumbedand pressure-tested, mounted to an enameled steel frameterminating in five standard union connections for hot and coldsupply in, blended water to the system, and system and waterheater return lines.Electronic control box shall be supplied pre-wired, terminatingat a knockout for Romex or BX cable connector.Temperature controllers shall be non-thermostatic and shallfeature integrated circuit board technology designed to deliverblended water economically at a safe, accurate temperaturefor sanitary use in recirculated hot water systems.Electronic Mixing Center will include all of the following capabilities:• Recirculated water control within +/-2°F with minimal recirculationof 4 gpm• Accurate control of blended water drawn from the system at apoint of use within +/-2°F• A minimum of 2°F recirculation system temperature lossrequired for effective loop control• A visual operation “set” and “actual” temperature display foreffective commissioning, adjustment and system monitoring• A visual signal by display to show “error” mode or “out ofrange” system failure, coupled with output for audible alarmand/or downstream solenoid valve relay• Integral two-way data port for PC and BMS interface• Automatic shutoff of hot water flow upon cold water inletsupply failure• Automatic shutoff of hot water flow in the event of a power failure• Temperature controllers compliant with ASSE Standard 1017and CSA B125 and so certified and identifiedAll as Rada EMC 22 from Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com43

Rada ®Sample SpecificationsSolutions for Central Recirculation System ControlRada EMC 23Electronic Mixing Center (EMC) shall deliver up to 150 gpm withno minimum system draw-off requirement and shall comprise:• Two 12V DC electronic temperature controllers• Inlet/return check valves• Inlet combination ball valve strainers• Pressure gauges• Inlet, system blend and return line thermometers• Isolation valves• System balancing valves• 110V UL-listed transformer enclosed in a NEMA 4X enclosure• Low voltage control wiring with protective conduit• System control moduleAll required installation components shall be supplied pre-plumbedand pressure-tested, mounted to an enameled steel frameterminating in five standard union connections for hot and coldsupply in, blended water to the system, and system and waterheater return lines.Electronic control box shall be supplied pre-wired, terminatingat a knockout for Romex or BX cable connector.Temperature controllers shall be non-thermostatic and shallfeature integrated circuit board technology designed to deliverblended water economically at a safe, accurate temperaturefor sanitary use in recirculated hot water systems.System control modules shall feature integral timer and shallhave programming capability for timed automatic systemtemperature adjustment.Electronic Mixing Center will include all of the following capabilities:• Recirculated water control within +/-2°F with minimalrecirculation of 4 gpm• Accurate control of blended water drawn from the systemat a point of use within +/-2°F• A minimum of 2°F recirculation system temperature lossrequired for effective loop control• A visual operation “set” and “actual” temperature display foreffective commissioning, adjustment and system monitoring• A visual signal by display to show “error” mode or “out ofrange” system failure, coupled with output for audible alarmand/or downstream solenoid valve relay• Integral two-way data port for PC and BMS interface• Automatic shutoff of hot water flow upon cold water inletsupply failure• Automatic shutoff of hot water flow in the event of a power failure• Temperature controllers compliant with ASSE Standard 1017and CSA B125 and so certified and identifiedAll as Rada EMC 23 from Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.Rada EMC 223Electronic Mixing Center (EMC) shall deliver up to 150 gpm withno minimum system draw-off requirement and shall comprise:• Two 12V DC electronic temperature controllers• Inlet/return check valves• Inlet combination ball valve strainers• Pressure gauges• Inlet, system blend and return line thermometers• Isolation valves• 110V UL-listed transformer enclosed in a NEMA 4X enclosure• Low voltage control wiring with protective conduit• 1/6 HP circulating pump rated at 10 gpm at 30 ft of head• System control moduleAll required installation components shall be supplied pre-plumbedand pressure-tested, mounted to an enameled steel frameterminating in five standard union connections for hot and coldsupply in, blended water to the system, and system and waterheater return lines.Electronic control box shall be supplied pre-wired, terminatingat a knockout for Romex or BX cable connector.Temperature controllers shall be non-thermostatic and shallfeature integrated circuit board technology designed to deliverblended water economically at a safe, accurate temperaturefor sanitary use in recirculated hot water systems.System control modules shall feature integral timer and shallhave programming capability for timed automatic systemtemperature adjustment.Electronic Mixing Center will include all of the following capabilities:• Recirculated water control within +/-2°F with minimal recirculationof 4 gpm• Accurate control of blended water drawn from the system at apoint of use within +/-2°F• A minimum of 2°F recirculation system temperature lossrequired for effective loop control• A visual operation “set” and “actual” temperature display foreffective commissioning, adjustment and system monitoring• A visual signal by display to show “error” mode or “out ofrange” system failure, coupled with output for audible alarmand/or downstream solenoid valve relay• Integral two-way data port for PC and BMS interface• Automatic shutoff of hot water flow upon cold water inletsupply failure• Automatic shutoff of hot water flow in the event of a power failure• Temperature controllers compliant with ASSE Standard 1017and CSA B125 and so certified and identifiedAll as Rada EMC 223 from Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.44Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com

Sample SpecificationsRada ®Solutions for Emergency Fixture ControlRada Z358-20Thermostatic Mixing Valve (TMV) of chrome-plated DZR brassconstruction with stainless steel internal operating mechanismand “Safety Yellow” control handle. TMV shall have 1" NPT maleinlets with integral spring loaded check valves and strainers, a3/4" outlet with thermometer and tee.TMV shall be so designed that all of the internal operatingcomponents are enclosed in a one-piece, “sealed for life”replaceable cartridge for ease of service.TMV shall have dual thermostats for increased accuracy andto provide redundancy in case of individual thermostat failure.TMV shall be supplied with all of the following capabilities:• Maximum temperature limiting and single temperature locking• Control of mixed water temperatures +/-2°F at flow ratesbetween .4 and 24 gpm• Complete shutoff of outlet flow prior to a 5°F temperature risein the event of a failure of the inlet cold water supply• Constant cold water flow design capable of delivering up to10 gpm directly from the cold water supply to the fixture in theevent of a failure of the inlet hot supply• Designed so that with a 130°F inlet hot supply temperature and60°F cold water supply, the maximum mixed water temperatureavailable from the TMV in misadjustment, product failure orproduct tampering mode is 98°FTMV shall be capable of meeting the requirements of ANSIStandard Z358.1-1998 sections 4.1, 4.6.6, 5.1.5, 5.4.6, 7.1.4,7.4.6, 8.1, 8.4.4 and 9.4.5.Rada Z358-40Thermostatic Mixing Valve (TMV) of chrome-plated DZR brassconstruction with stainless steel internal operating mechanismand “Safety Yellow” control handle. TMV shall have 1-1/4" NPTmale inlets with integral spring loaded check valves and strainers,a 1" outlet with thermometer and tee.TMV shall have dual thermostats for increased accuracy andto provide redundancy in case of individual thermostat failure.TMV shall be supplied with all of the following capabilities:• Maximum temperature limiting and single temperature locking• Control of mixed water temperatures +/-2°F at flow ratesbetween 2 and 48 gpm• Complete shutoff of outlet flow prior to a 5°F temperature risein the event of a failure of the inlet cold water supply• Constant cold water flow design capable of delivering up to20 gpm directly from the cold water supply to the fixture inthe event of a failure of the inlet hot supply• Designed so that with a 130°F inlet hot supply temperature and60°F cold water supply, the maximum mixed water temperatureavailable from the TMV in misadjustment, product failure orproduct tampering mode is 98°FTMV shall be capable of meeting the requirements of ANSIStandard Z358.1-1998 sections 4.1, 4.6.6, 5.4.6, 7.1.4, 7.4.6,8.1, 8.4.4 and 9.4.5.All as Rada Z358-40 supplied by Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.All as Rada Z358-20 supplied by Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com45

Sample SpecificationsRada ®Solutions for Emergency Fixture ControlRada Z358-20-FMCThermostatic Mixing Valve (TMV) of chrome-plated DZR brassconstruction with stainless steel internal operating mechanismand “Safety Yellow” control handle. TMV shall have 3/4" NPTinlets with fitted combination union/check stop/strainers andoutlet stop valve and thermometer.TMV shall be so designed that all of the internal operatingcomponents are enclosed in a one-piece, “sealed for life”replaceable cartridge for ease of service.TMV shall be supplied with all of the following capabilities:• Maximum temperature limiting and single temperature locking• Control of mixed water temperatures +/-2°F at flow ratesbetween .4 and 24 gpm• Complete shutoff of outlet flow prior to a 5°F temperature risein the event of a failure of the inlet cold water supply• Constant cold water flow design capable of delivering up to10 gpm directly from the cold water supply to the fixture in theevent of a failure of the inlet hot supply• Designed so that with a 130°F inlet hot supply temperatureand 60°F cold water supply, the maximum mixed watertemperature available from the TMV in misadjustment, productfailure or product tampering mode is 98°FTMV shall be capable of meeting the requirements of ANSIStandard Z358.1-1998 sections 4.1, 4.6.6, 5.1.5, 5.4.6, 7.1.4,7.4.6, 8.1, 8.4.4 and 9.4.5.TMV shall be supplied fully assembled and pressure-tested, withoutlet stop valve enclosed in an 18" x 24" x 8" stainless steelrecessed cabinet with a 2" flange. Cabinet shall have a polishedstainless steel piano-hinged door with keyed cylinder lock.Please select option.• Cabinet shall be supplied with 3/4" NPT top inlets anda 3/4" NPT top outlet (standard).• Cabinet shall be supplied with 3/4" NPT top inlets anda 3/4" NPT bottom outlet (TB).• Cabinet shall be supplied with 3/4" NPT bottom inlets anda 3/4" NPT bottom outlet (BB).• Cabinet shall be supplied with 3/4" NPT bottom inlets anda 3/4" NPT top outlet (BT).Please use suffix SMC where appropriate to call out SurfaceMounted Cabinet.Rada Z358-40-FMCThermostatic Mixing Valve (TMV) of chrome-plated DZR brassconstruction with stainless steel internal operating mechanismand “Safety Yellow” control handle. TMV shall have 1" NPT inletswith fitted combination union/check stop/strainers and outletstop valve and thermometer.TMV shall be supplied with all of the following capabilities:• Maximum temperature limiting and single temperature locking• Control of mixed water temperatures +/-2°F at flow ratesbetween 2 and 48 gpm• Complete shutoff of outlet flow prior to a 5°F temperaturerise in the event of a failure of the inlet cold water supply• Constant cold water flow design capable of delivering up to20 gpm directly from the cold water supply to the fixture inthe event of a failure of the inlet hot supply• Designed so that with a 130°F inlet hot supply temperatureand 60°F cold water supply, the maximum mixed watertemperature available from the TMV in misadjustment, productfailure or product tampering mode is 98°FTMV shall be capable of meeting the requirements of ANSIStandard Z358.1-1998 sections 4.1, 4.6.6, 5.4.6, 7.1.4, 7.4.6,8.1, 8.4.4 and 9.4.5.TMV shall be supplied fully assembled and pressure-tested, withoutlet stop valve enclosed in an 18" x 24" x 8" stainless steelrecessed cabinet with a 2" flange. Cabinet shall have a polishedstainless steel piano-hinged door with keyed cylinder lock.Please select option.• Cabinet shall be supplied with 1" NPT top inlets anda 3/4" NPT top outlet (standard).• Cabinet shall be supplied with 1" NPT top inlets anda 3/4" NPT bottom outlet (TB).• Cabinet shall be supplied with 1" NPT bottom inletsand a 3/4" NPT bottom outlet (BB).• Cabinet shall be supplied with 1" NPT bottom inletsand a 3/4" NPT top outlet (BT).Please use suffix SMC where appropriate to call out SurfaceMounted Cabinet.All as Rada Z358-40-FMC supplied by Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.As all Rada Z358-20-FMC supplied by Armstrong International Inc.,Three Rivers, MI, or otherwise approved equal.All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.46Hot Water Group, 221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130www.armstrong-intl.com

Inside Back CoverBlank

Hot Water Group221 Armstrong Blvd., P.O. Box 408, Three Rivers, MI 49093 – USA Phone: (269) 279-3602 Fax: (269) 279-3130Bulletin ALW-200-C 12/03 www.armstrong-intl.com Printed in U.S.A.