The R-K DRV series low pressure diaphragm relief valve is designed for low pressure applications with no back pressure to release excess up-stream pressure on the piping, storage tank and/or system due to pressure surges, vaporizing, or heat reaction.
Adjustable screw and lock-nut makes it easy to accurately pre-set relief pressure.
Teflon (primary and EPDM (back-up) diapragms.
This pressure relief valve is designed to keep the stainless steel spring totally isolated from the fluid chamber insuring no metal contact with the fluid.
Working pressure range from 5 to 25 PSI
Top entry and parallel inlet and outlet ports to facilitate installation and avoid piping problems.
Ideal for DI waterm harsh chemicals, and other high purity applications.
Upstream Pressure Vacuum to 150 PSIG
Relief Pressure 5 to 25 PSIG
For lower pressure relief requirements consult factory
Material ValveBody PVC Type 1, Grade 1
Polypropylene
PVDF
Teflon
Diaphragm Primary Teflon
Backup EPDM
Seal EPDM
Viton(R)
Kalrez(R)
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 1/2" to 1" Valve FNPT
All valves are fully ported
Mounting Method (2) cut-out slots on molded valve body
Kalrez® and Viton® are registered trademarks of DuPont Dow Elastomers.
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.
