Forged Stainless Steel Check Valve

The GAIRUI Forged Piston Check Valves is a valve which is automatically opened and closed by the flow of the medium itself, and is used to prevent the reverse flow of the medium. It is also called a reverse check valve, a one-way valve, a countercurrent valve, and a 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. Check valves can be divided into swing check valves (with center of gravity rotation) and lift check valves (along the axis).

Product Information

Size: 2" up to 60"(DN50 up to DN1500)

Pressure Rating: ASME 150#,300#,600#,900#,1500#, 2500#

Materials: Carbon Steel, Low Temperature Carbon Steel, Stainless Steel, Duplex Stainless Steel, Super Duplex Stainless Steel, Nickel Alloys, Nickel Aluminum Bronze, Hastelloy, Inconel Etc.

End Connection: Flanged RF, FF, RTJ, BW

Specification

• Design - BS 1868 / API 6D / ASME B16.34
• Face to Face - ASME B16.10
• End Flange - ASME B16.5
• BW End - ASME B16.25
• Test - API598
• Special - NACE MR-01-75

Features

• Bolted Bonnet or Pressure Seal Bonnet
• Bypass on Request
• Full port or Conventional Port
• Swing Type Disc