MARIC CONTROL VALVES - Premier Valves

MARIC
Control Valves
CONTROL
VALVES
t h e a r t o f f l o w c o n t r o l
PREMIER VALVES (Pty) Ltd
A - P.O. Box 11735, Randhart, South Africa, 1457 W - www.premiervalves.com
T +2711-908-3760 F +2711-864-2525 E - sales@premiervalves.com
A P.O. Box 11735, Randhart, South Africa, 1457 W www.premiervalves.com
T +2711-908-3760 F +2711-864-2525 E sales@premiervalves.com
CONTROL VALVES
1
Registered Premier franchisees

MARIC FLOW CONTROL VALVES
Product Range
Maric Flow Control Australia is an Australian owned
engineering firm situated in Adelaide, South Australia.
Established in 1963 the company has experienced rapid growth
in recent years with approximately 40% of its production going
to overseas distributors.
The company manufactures Maric flow control valves which
maintain a constant pre-set flow rate of water, over a wide
pressure range. For flow rate sensitive pumps, filters, pump ·
glands and water distribution systems, the installation of these
valves can offer many benefits and valuable protection. The
technology is based on a precision moulded rubber control
ring in the valves body, with an orifice diameter that varies in
response to the pressure differential applied to it. The greater
the pressure, the smaller the orifice, and vice versa, thereby
maintaining a constant flow.
PRODUCT RANGE
B.S.P. SCREWED
Available in: Brass, Chrome, UPVC & Stainless steel.
Select desired flow rate from "available flow rates" on back page.
Flow control Check valves available in limited configurations.
Available in FF MF FM - First letter denotes inlet
Flow rates available are from 0.4 litres/minute up to the maximum listed below.
Body Sizes
(mm):
Max. Flow
UMinute:
WAFER TYPE
¼ 10 15 20 25 32 40 50
9 9 23 54 114 233 233 342
For mounting between flanged pipe fittings.
(Table "0" as standard. Other specs to order)
Available in: Brass, UPVC, Gunmetal & Stainless Steel.
Wafers are supplied with an o'ring in each face for sealing.
Standard Wafer 0.0. is located by flange bolts. Full flange wafers made to order.
Flow rates available are from 0.4 litres/minute up to the maximum listed below.
Body Sizes
(mm):
Max. Flow
L/Minute:
INSERT TYPE
25 32 40 50 65 80 100 150 200 250 300
233 233 233 342 456 699 1279 2320 4427 6058 8854
Inserts are out of sight and protected from unauthorised interference.
Available in: Brass, UPVC & Stainless Steel
Plain insert - various applications including press fitting into OEM's equipment & tapware etc.
The high quality of all Maric valves is maintained through the
use of a quality assurance program based on IS09001 , and
is audited by SAl Global, (a division of Standards Australia).
This allows the company to be both quality assured and hold a
current WaterMark License.
The valves are reliable, compact, self-cleaning and are
maintenance free throughout the life of the valve. Flow rate
increases generally one half to one percent per year. Therefore
depending on the accuracy required by the installation, valve life
can be up to 20 years.
Flanged & Special inserts - for numerous applications including water meter flow control. Suitable for 15 to 50 mm water meters.
Flow rates available are from 0.4 litres/minute upwards Specific dimensions and flow rates are available on application.
A P.O. Box 11735, Randhart, South Africa, 1457 W www.premiervalves.com
T +2711-908-3760 F +2711-864-2525 E sales@premiervalves.com

WHEN ORDERING THESE VALVES, PLEASE BE SURE TO
SPECIFY:-
• Body size
• Thread configuration for screwed valves or Wafer type
• Body material
• Pressure differential range - if other than Precision
• Flow Rate
Performance Graph: Typical of PRECISION valves irrespective of body size or flow rate
Rated Flow
Flow Rate
(as a percentage
of rated flow)
Control Rubber Options
140%
120%
100%
80%
60%
Maric Name Abbreviation Control
Rubber
0
100
200
300
400
500
600
STANDARD SPECIFICATIONS
Pressure Differential Range: 140 - 1000 kPa
Flow Rate Accuracy: + / - 10%
Temperature Range: 0- 60°C (50aC for UPVC)
Available flow rates: litres/minute
.4 / .45 / .5 / .55 / .63 / .7 / .8 / .9 / 1.0 / 1.1 / 1.2 / 1.3 / 1.5 / 1.6/
1.8 / 2.0 / 2.3 / 2.5 / 2.8 /3.2 / 3.5 / 4.0 / 4.5 / 5.0 / 5.5 / 6.3 17.0 /
8.0 / 9.0 / 10 / 11 / 12 / 13 / 15 / 16 / 18 / 20 / 23 / 25 / 28 / 32 / 36 /
41 / 45 / 49 / 54 / 59 / 66 / 73 / 82 / 91 / 102 / 114 / 125 / 138 / 150 /
162 / 180 / 199 / 216 /233/ up to 8854 11m
700
800
900
1000
1100
Pressure Differential Range Flow Rate
Accuracy
Pressure
Differential
(across valve in kPa)
Max
Temperature
PRECISION (standard) "P" Nitrile 140 -1000 kPa 20 -150 psi +/-10% 60°C
Low Pressure "LP" Nitrile 40 - 300 kPa 6 - 40 psi +/-20% 60°C
High Pressure (1) "N6" Nitrile 140 -1500 kPa 20 - 220 psi +/-20% 60°C
High Pressure (2) "N7" Nitrile 170 - 2000 kPa 25 - 290 psi +/-20% 60°C
EPDM & Viton control rubbers are available for harsh environments and/or higher temperature applications.
Understanding Headloss or Pressure Differential (P.O.) across valve.
QUESTION: What will the headloss across the Maric valve be?
ANSWER: At least 140 kPa, or, between 140 and 1000 kPa if the
system is designed and operating correctly. This is because the
function of our PRECISION range of valves is to control the flow
when Pressure Differential across the valve is within this range.
Therefore, to achieve full rated flow (accurate to within ±10 %),
the installation must provide for inlet to be at least 140 kPa
above outlet pressure.
MARIC FLOW CONTROL VALVES
A P.O. Box 11735, Randhart, South Africa, 1457 W www.premiervalves.com
T +2711-908-3760 F +2711-864-2525 E sales@premiervalves.com
How to Order
TO CALCULATE HEADLOSS: Assume valve is controlling flow
as required. Determine what pressure will be at inlet and
what pressure will be at outlet. The Pressure Differential will
then simply be the difference between inlet and outlet above.
Should this work out to be less than 140 or greater than 1000
kPa, then this PRECISION valve will not provide full flow and
the installation will either require altering, or the use of Low
Pressure valves (40 - 300 kPa) or High Pressure valves (140 to
1500 kPa or 170 to 2000 kPa).

MARIC FLOW CONTROL VALVES
Benefits Of Using Maric Flow Control Valves
MINING: CENTRIFUGAL PUMPS
• Maximise gland packing life through carefully controlled
gland-water flow
• Minimise dilution of slurry
• Ensure availability of gland-water to all glands on a common
gland-water line
• Save valuable water supplies
• Also used in fire fighting equipment, safety showers & dust
suppression
Common Valve Attributes: Often stainless steel screwed,
15 - 25mm, flow control check valves fitted with EPDM control
rubbers.
Environment: Harsh, exposed to extreme pressure,
temperature and corrosion.
WATER AUTHORITIES
• Encourage payment of overdue water bills
• Improve mains distribution pressure
• Extend water meter life
• Enable agreed maximum flow to consumers tanks.
• Enable economical distribution to sparsely populated areas
• Enforce water restriction
• Reduce infrastructure costs
Small connections: Brass water meter and tail inserts, and
brass BSP screwed valves for 0.4 to 60 Ipm
Larger connections: BSP Screwed Brass 15 - 50mm, M&F
or F&M also PVC and Gunmetal wafer type 40-150mm for
20 - 2000 Ipm
Environment: Usually potable water at ambient temp.
WATER TREATMENT
• Prevent media loss during back-flushing
• Protect delicate filters from excessive flow rates
• Enable controlled flow rate of sampling water to analysing
equipment
• Ensure 100% bacteria kill in ultraviolet water sterilisation
Common Valve Attributes: 6mm - 50mm F&F PVC Screwed,
and 40 - 200mm UPVC Wafers in Precision type
Environment: Water quality and PH varies, hence UPVC
material. Usually ambient temperature
A P.O. Box 11735, Randhart, South Africa, 1457 W www.premiervalves.com
T +2711-908-3760 F +2711-864-2525 E sales@premiervalves.com

CENTRIFUGAL PUMP PROTECTION
Extend pump life by:
• Keeping pump on its curve by limiting maximum flow rate
• Prevent up-thrust damage (common on high draw-down
submersibles)
• Prevent cavitation damage
• Prevent over-pumping beyond the supply capacity
• Maximise gland packing life through carefully controlled
gland-water flow
Common Valve Attributes: 25 - 50mm F&F Brass and Stainless
steel, screwed and 25-200mm wafer type in Brass, Gunmetal,
PVC or Stainless steel
Environment: Good to saline conditions, ambient temp.
Often High Pressures
OTHER INDUSTRIAL APPLICATIONS
• Vacuum Pumps "Liquid Ring" - operator convenience,
prevent overheating and overloading
• Fire-fighting - guarantee pressu re and flow to all hydrants,
control flow of water and foaming agent to ensure correct
dose ratio
• Dust Suppression - minimise dust and erosion
• Distilleries - ensure correct cooling of condensers
• Safety showers & eye-wash equipment - ensure safe
operation
Common Valve Attributes: Brass, Chrome and Stainless steel,
screwed or wafer type
Environment: Water quality, PH and temperatures vary, may
require the use EPDM or viton control rubbers
DOMESTIC/COMMERCIAL
• Showers water conservation and energy savings
• Drinking fountains controlled stream
• Toilet cisterns - Prevent "continuous flush" operation if fill
rate is too fast
• Water hammer prevention
Common Valve Attributes: Brass and Chrome plated, 15mm
BSP screwed M&F or F&M, 4.5, 7, 9, or 11 Ipm with Kwyflo
control rubbers for quiet operation
Environment: Potable water up to 600 Celsius
MARIC FLOW CONTROL VALVES
Benefits Of Using Maric Flow Control Valves
A P.O. Box 11735, Randhart, South Africa, 1457 W www.premiervalves.com
T +2711-908-3760 F +2711-864-2525 E sales@premiervalves.com

t h e a r t o f f l o w c o n t r o l
PREMIER VALVES (Pty) Ltd
P.O. Box 11735, Randhart, South Africa, 1457
sales@premiervalves.com
T +2711-908-3760 F +2711-864-2525
www.premiervalves.com
DISTRIBUTOR’S DETAILS
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