Check valves are widely used in high pressure pipeline to control fluids flowing in one way and stop fluids from flowing back to the pump, protecting pipeline safety. Jereh check valves are available in three types including top-entry, dart and flapper. The top entry and flapper types adopt completely wrapped flappers to extend the service life, and they are mainly used in fluid services. Dart check valves feature dual seals between stainless steel and seal ring and they are mainly used in gas services.

Based on years of experience and research on customer needs in the oil/gas industry, Jereh has successfully developed treating iron products suitable for both standard, low-temperature and sour services, including swivel joint, plug valve, integral pup joint, integral fitting, safety valve, check valve, choke valve, hose loop and reel swivel. Maximum pressure is up to 20,000psi. Each treating iron product is conducted strict quality control and test, meeting international standards including ASTM/ASME. Each product has the only traceable number for lifecycle quality management. Tool kit and repair kit are available to suit each product for easy maintenance. Besides standard products, we can also provide customized service to meet various customer needs.

Hose loops are used to transport fluids for a variety of high pressure well service applications including discharge lines, well test lines and cementing lines. Jereh hose loops include long radius type and integral flexible type. Long radius hose loops combine advantages of Jereh long radius swivel joints and integral pup joints, featuring erosion, vibration and shock resistance, and large flow. Integral flexible hose loops feature single union connection with excellent sealing and rotary performance. It is an ideal product for oilfield operation. Jereh offers hose loops both for standard and sour gas services, suitable for cementing, fracturing, acidizing and testing lines. Customized design is available to meet diverse needs.

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.