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.

Choke valves are widely used to adjust pressure and flow. Jereh choke valves include the hydraulic and manual in respect of the operation mode. Adjustable choke valves adopt union connection and the orifice size is adjusted to achieve the regulation of flow and pressure.

Integral pup joints are straight tubes with union connection on both ends, widely used for transporting high pressure flow in fracturing manifold, cementing manifold, servicing manifold and testing lines. Jereh integral pup joints are forged from premium alloy steel. Metal melting and heat treatment processes ensure the strength. Based on analysis of weight and erosion resistance, Jereh has improved wall thickness and inner bore, extending service life, making them the ideal choice for oilfield applications. To meet diverse customer needs, integral pup joints for standard service are available with many styles, pressure and temperature rating. Besides, Jereh has introduced integral pup joints for sour gas service as per NACE MR 0175. Customized design is also available.

Plug valves are important high pressure products for well service to allow and stop flow by plug rotation. The body is forged from premium alloy steel, delivering high strength and hardness. Plug surface is enhanced to deliver high wear resistance and sealing capability. To meet diverse needs, Jereh offers 5 basic types including manual, hydraulic, electric, handwheel and hydraulic & manual for different applications.