Power Station Check Valve
KOSEN Pressure Seal Swing Check Valves is a valve which is automatically opened and closed by the flow of the medium itself. It is used to prevent the reverse flow of the medium. It is also called the reverse check valve, the one-way valve, the countercurrent valve and the back pressure valve. The check valve is an automatic valve. Its main function is to prevent the backflow of the medium, prevent the reversing of the pump and drive motor, and the discharge of the container medium. The check valve can also be used to supply pipelines where the pressure may exceed the system pressure.
Normal Size Range: 2"-20"
Normal Pressure Rating: PN100~PN420, CLASS60~2500
Temperature Range: -29~425Degree C
Design and Manufacture: ANSI B16.34,API 6D,BS1868
Face to face(end to end): ANSIB16.10,API 6D
Flanged connection: 2"~24" to ANSI B16.5
Butt welded end: ANSI B16.25
Test and inspection: API 598,API 6D
A.Back up ring: Absorbs thrust applied by internal pressure.
B.Thrust ring: Pretects the soft metallic gasket from detemation.
C.Gasket Unique angutar design provides superior sealing.