Pressure Relief Valves

Pressure relief valves act as a fail-safe for reciprocating plunger pumps, pressure vessels and testing lines, etc. The open/close pressure is controlled by belleville washers. When the pressure exceeds the preset limit, the valve will release pressure automatically. When the pressure drops below the preset limit, the valve will close automatically to protect the personal and equipment safety. Jereh pressure relief valves feature high strength, wide pressure range and stable performance. The pressure containing parts are forged from premium alloy steel and the metal melting and heat treatment process guarantee the hardness and strength. Various belleville washer stack configurations are available for different pressure ranges. The special treatment of the pressure relief mechanism provides stable sealing performance. To meet diverse customer needs, Jereh offers pressure relief valves suitable for cementing, acidizing, fracturing and testing lines. Customized design is also available.



Mating repair kit is available for inline maintenance.
Unique seal type and seal material enhance reliability and service life.
Special treatment to the sealing surfaces and the surfaces exposed to fluids improves the corrosion resistance.
•Automatic open/close needs no shutdown or manual operation.


Rated Working Pressure 69.0MPa~138.0MPa(10,000psi~20,000psi)
Nominal Size 2″, 2″×2″, 2 2/2″, 2″, 2″×2″, 2″, 2″
Temperature Rating -29℃~121℃(PU), -46℃~121℃ (LU) -20℉~250℉ (PU), -50℉~250℉(LU)
Service Standard, Sour Gas
Application Fracturing, Cementing, Acidizing, Testing Lines

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