Dry rotary screw vac..

D_SeriesD_200Dry rotary screw vacuum pumps

The advantages of going dryDry vacuum pumps were first used in the mid-80s in the semiconductor industryand in chemical processing in the early 90s. nash_elmo continues to be a leaderin these applications.Our dry pump technology does not require external lubrication and uses noncontactingrotors to pump process vapors, thereby eliminating contamination.They provide several benefits:■ No contamination of process gases■ Solvent or process chemicals can be condensed and reused■ Acid and toxic chemicals are pumped easily■ Achieves a deeper vacuum, which improves yield and quality■ Flexibility to pump a changing mixture of chemicals■ Low operating costs■ Low maintenance costs■ Eliminates effluent treatment costsMain applications:■ Crystallization■ Distillation■ Drying■ Evaporators■ Metallurgical processing■ Reactor service■ Solvent recovery■ Sterilizers…and many othersFeaturesSimplicitySingle stage designControlled internal temperaturesStraight gas pathOil-free pumping chamberSpecial thread form,dynamically balancedFull capacityLow ultimate vacuumLarge pump capacitiesBenefitsReliability, low maintenanceNo interstage condensersEnergy efficient / safeMinimal residence timeEnvironmentally friendlyNo oil consumptionLow-noise, low vibrationFast evacuation timeHigh product purityFewer pumps neededWe design and develop solutions tailored to your individualneeds. Contact us for further details.2 nash_elmo Industries D_200

Reliable, ultra clean andenvironmentally friendlyThe D_200 family of rotary screw vacuum systems features remarkably reliableand highly efficient dry vacuum pumps. A unique rotary screw design, ultraclean gas purged seals and no oil lubricants within the pumping chambersmake this dry pump very environmentally friendly.It can handle corrosives, organics, inorganics and solvents because of itsoil-free non-contacting screw design. As a result of this design, the pumphas a long life span without any internal wearing parts. Unlike other unitswhere corrosion can occur between the screw rotor and separate shaft, intappings on the screws, etc., the D_200 shafts and screws are each onesolid piece allowing for the safest, most trouble free design.With the gas enclosed between the screw flights and then axially transferredto the discharge, there is no possibility of contaminating valuable solvents,products or the environment.The D_200 family of dry screw pumps is ideal for vapor recovery of processchemicals and solvents. This makes them the ultimate system to have –saving energy, emissions and most importantly, operating costs.Another feature of the dry pumps is that they can be either direct cooled orindirect cooled depending on the application. An optional air cooling arrangementcan even be provided to ease installation. The direct cooling processallows a greater degree of temperature control, especially important whenhandling potentially combustible gases. Engineered systems capture condensablesat the discharge, reducing emissions. Specially designed hybridsystems can achieve 25,000 m 3 /h (14,000 cfm) and beyond when largercapacities are needed.nash_elmo D_200 Dry Pro® rotary screw vacuum pumps aremanufactured to ISO 9001:2000 standards and are ATEX compliant. They arebacked by more than 100 years of vacuum technology and a worldwide servicenetwork. Our commitment to excellence and customer service extends frommanufacturing and installation to technical assistance and beyond. We arefully staffed with a knowledgeable sales force and engineering expertise toprovide total and timely support for all your vacuum needs.nash_elmo Industries D_200 3

EDPS modelVolume at inlet pressure10000m 3 /h10001001050 HzEDPS 2500EDPS 800EDPS 400EDPS 200EDPS 10010.10.01 0.1 1 10 mbar abs 100 1000Inlet pressureEDPS model EDPS 100 EDPS 200 EDPS 400 EDPS 800 EDPS 2500Capacity (50 Hz) m 3 /h 65. 160. 300. 550. 1650.Maximum sound level* dB(A) 75. 77. 79. 82. 85.Ultimate pressure mbar 0.67 0.5 0.03 0.03 1.0Power consumption kW 2.8. 4.8 8.5 19. 62.Water usage rate (typ.) l/min 1.9 3.8 7.6 12.1 30.3Dimensions (mm) length 1180. 1270. 1600. 1765. 2140.width 430. 760. 865 700 700.height 560. 650 730 810. 1550.Weight kg 150 200 331. 658 1814* With typical exhaust silencerConnections are standard DIN sizes, others available upon requestOther flange standards are also availableLarger capacity hybrid systems are available upon request.nash_elmo Industries D_200 4

DPS model246 51893710Volume at inlet pressure10000cfm100010060 HzDPS 1000DPS 400DPS 200DPS 100DPS 501 Inlet (high vacuum, HV)2 Discharge3 Cooling water jacket4 Gear box5 Gas purged seals, LV6 High vacuum seals7 Gas ballast /cooling8 Screw rotors9 Shaft coupled to motor10 Oil level sight glass1010.10.01 0.1 1 10 100 Torr 1000Inlet pressure(mm HgA)DPS model DPS 50 DPS 100 DPS 200 DPS 400 DPS 1000Capacity (60 Hz) cfm 50 . 110. 220. 400. 1300.Maximum sound level* dB(A) 77. 80. 82. 85. 85.Ultimate pressure mm HgA 0.3 0.1 0.01 0.01 0.4Power consumption hp 4.7. 7.5. 15. 30. 98.Water usage rate (typ.) gpm 0.5 1. 2. 3.2 8.Dimensions (Inches) length 46. 50. 63. 69. 84.width 17. 30. 34. 27.5 70.height 22. 25.5 28.75 32. 60.Weight lbs 330. 440. 730. 1450. 4000.* With typical exhaust silencerConnections are standard ANSI sizesOther flange standards are also availableLarger capacity hybrid systems are available upon request.nash_elmo Industries D_200 5

Other nash_elmo product linesL_Series:Liquid Ring PumpsRobust technology for the highest demands and varied applicationsMachines in the L_Series distinguish themselves through low operatingtemperatures and are suitable for handling splash water, steamand condensates. They were developed for the toughest applicationsand can safely and reliably extract or compress even explosive gas/steam mixtures (ATEX-certified). Selection of a suitable operatingliquid enables the L_Series vacuum pumps and compressors to beoptimally integrated into processes. Thanks to their low operatingcosts and extensive performance range up to 37,000 m 3 /h(22,000 cfm), they excel in any application.G_Series:Gas Ring BlowersProven, reliable and extremely quietWhether vacuum pumps, compressors or systems for conveying air,gases or air/gas mixtures, the extensive range of products in theG_Series meets the widest range of requirements. Thanks to theirvariable voltage motors, many are usable anywhere in the worldwithout the need for conversion. In addition to their compact construction,full UL/CSA certification and innovative design, G_Seriespumps and compressors offer a comprehensive power range up to2,500 m 3 /h (1,470 cfm), maximum power density and a wide selectionof accessories, including frequency converters.V_Series:Vane PumpsD_Series: Dry Pumpsnash_elmo Industrieswww.nash-elmo.cominfo@nash-elmo.comCorporate HeadquartersTrumbull, CT USA9 Trefoil DriveTrumbull, CT 06611-1330Tel.: +1 800 553 6274Simple design for varied applicationsThe vane pumps in our V_Series are known for their robust design,easy handling and long service life. Furnished with an extremelysturdy metal coating as well as installation- and service-friendlyplug & play functionality, these high performance machines areextremely quiet in operation, and can meet even the most challengingindustrial demands while covering an impressive performancerange up to 4,000m 3 /h (2,350 cfm) and 10 bar g (145 psig).High reliability with low operating costsThe dry-running vacuum pumps in our D_Series are explosion-proofand were specially developed for production processes involvingsensitive materials. Throughout the entire process, they operatecondensation-free – and therefore corrosion-free – without mixingprocess gases with the operating liquid. As a result, discharge gasescan simply be cleaned or returned to the process. There are no wasteproducts. In addition, all pumps in the D_Series are highly efficientand provide a constant suction capacity over an extremely wide rangeof pressures with a performance range up to to 2,200 m 3 /h (1,300 cfm).European HeadquartersNuremberg, GermanyKatzwanger Straße 150D-90461 NürnbergTel.: +49 911 1454 0Order-No: VNE:B-PB018-A2-AMPrinted in GermanyDispo 278012238/68 16.0 / 03-2004© 2004 All rights reservedHENNIG · Nbg All illustrations are non-binding · Subject to technical modifications