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Design Features
The R-K series back pressure regulator is designed to protect piping and equipment from pressure changes where a constant regulated pressure on the up stream side of the valve is required. Prevents pumps from dead heading, over pressurization, pressure surge conditions, and maintains back pressure in closed loop systems.
Adjustable screw and lock-nut makes it easy to accurately pre-set desired relief pressure
Teflon (primary) and EPDM (back-up) diaphragms standard.
No Metal contact with fluid
Wide adjustable relief pressure range (10-125 PSI)
Small pressure differential band from cracking point to fully open, and from fully open to close.
Top entry makes in-line maintenance quick and easy.
Ideal for DI water, harsh chemical, and other high purity applications.
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Diaphragm Pressure Relief Valve
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Specifications
Upstream Pressure Vacuum to 150 PSIG
Regulated Pressure 1/4" to 3/4" 10-125 PSIG
1" 10-100 PSIG
1-1/2" & 2" 10-60 PSIG
Material ValveBody PVC Type 1, Grade 1
Polypropylene
PVDF
Teflon
Piston Teflon
Diaphragm Primary Teflon
Backup EPDM
Seal EPDM
Viton(R)
Kalrez(R)
Pressure differential Plus or Minus 3 PSIG from any pre-set pressure relief point.
Temperature Range 0 F to 140 for PVC
0 F to 180 F for POLYPRO
0 F to 280 F for PVDF
0 F to 340 F for TEFLON
Valve ports 1/4" to 1" Valve FNPT
1.5" to 2" Valve MPT
All valves are fully ported
Mounting Method (4) 1/4" -20 tapped holes for
standard machine valve body.
(1/4" to 1.00")
Kalrez® and Viton® are registered trademarks of DuPont Dow Elastomers.
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Order
Information
The chart below will specify R-K standard
valves regarding valve size, valve material, and seal material.
For special orders, please consult the factory for pricing
and delivery information.
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