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Cast Iron Double Door Check Valve

Short Description:

DOUBLE-FLAP CHECK VALVE IS USED FOR PURE PIPELINE AND INDUSTRIAL, ENVIRONMENTAL protection, WATER treatment, high-rise building water supply and drainage pipeline, to prevent the reverse flow of medium. The CHECK valve adopts the clamp type, the butterfly plate is two semicircles, and the spring is used to force the return, the sealing surface can be the body surfacing wear-resistant material or rubber lining, wide range of use, reliable sealing.


  • Min.Order Quantity: 1
  • Smaple: Free
  • Standard: EN1092-2 PN6/10/16、AS2129 TabD/E、ASME B16.1 CL150
  • Certification: ISO9001/PED/CE/EAC/TüV
  • Visit the factory: Real-time video
  • Color: Accept Custom
  • Guarantee period: 3 Years
  • OEM: YES
  • Certificate of origin: YES
  • 3.1 Material test: YES
  • Body: EN-GJS400-15
  • Disc: CF8/CF8M/AZ-B
  • Seat: EPDM/NBR/VITON
  • Product Detail

    Product Tags

    Stainless Steel Double Door Check Valve

    Check valve opening and closing parts by medium flow and force to open or close, in order to prevent medium backflow valve called check valve. Check valve belongs to the automatic valve class, mainly used for medium one-way flow pipeline, only allow the medium to flow in one direction, in order to prevent accidents.

    Check valve according to the structure, can be divided into lift check valve, swing check valve and butterfly check valve three. Lift check valve can be divided into vertical and horizontal two. Swing check valve is divided into single – valve, double – valve and multi – valve three. Butterfly check valve for straight through, the above check valve in the connection form can be divided into threaded connection, flange connection and welding three. A check valve is a valve that automatically stops the flow back. The disc OF a CHECK valve OPENS under FLUID pressure and FLOWS from the inlet side to the outlet side. When the inlet side pressure is lower than the outlet side, the disc automatically closes under the action of fluid pressure difference, gravity and other factors to prevent fluid backflow.

    ok valve check valve draiwng

    ok valve check valve production process-1


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