Ductile Cast Iron Rubber Flap Check Valve

Rubber flap check valve is mainly composed of valve body, valve cover and rubber disc. W e can choose cast iron or ductile iron for valve body and bonnet. The valve disc we usually ues steel+rubber coating. This valve is mainly suitable for the water supply and drainage system and can be installed at the water outlet of the water pump to prevent back flow and water hammer damage to the pump.


  • Size: 2”-12”/DN50-DN300
  • Pressure Rating: PN6/PN10/16
  • Warranty: 18 Month
  • Brand Name: ZFA Valve
  • Service: OEM
  • Product Detail

    Product Detail

    Size & Pressure Rating & Standard
    Size DN50-DN500
    Pressure Rating PN6,PN10, PN16, CL150
    Face to Face STD API609, BS5155, DIN3202, ISO5752
    Connection STD PN6, PN10, PN16, DIN 2501 PN6/10/16, BS5155
    Material
    Body Cast Iron(GG25), Ductile Iron(GGG40/50), Carbon Steel(WCB A216), Stainless Steel(SS304/SS316/SS304L/SS316L) , Duplex Stainless Steel(2507/1.4529), Bronze, Aluminium Alloy.
    Disc DI+Ni, Carbon Steel(WCB A216), Stainless Steel(SS304/SS316/SS304L/SS316L) , Duplex Stainless Steel(2507/1.4529), Bronze, DI/WCB/SS coated with Epoxy Painting/Nylon/EPDM/NBR/PTFE/PFA
    Stem/Shaft SS416, SS431, SS304, SS316, Duplex Stainless Steel, Monel
    Seat NBR, EPDM/REPDM, PTFE/RPTFE, Viton, Neoprene, Hypalon, Silicon, PFA

    Product Display

    Rubber Flap Check Valve (12)
    Rubber Flap Check Valve (13)
    Rubber Flap Check Valve (17)

    Product Advantage

    Check valve, also known as one-way valve, check valve, back pressure valve, this type of valve is automatically opened and closed by the force generated by the flow of the medium itself in the pipeline, and belongs to an automatic valve. The function of the check valve is to prevent the backflow of the medium, the reverse rotation of the pump and its driving motor, and the discharge of the medium in the container. Double-plate check valve is a very common type of check valve. By choosing different materials, the wafer check valve can be applied to water, steam, oil in petrochemical, metallurgy, electric power, light industry, food and other industries. , nitric acid, acetic acid, strong oxidizing medium and urea and other media.

    Rubber flap check valve The rubber flap is made of steel plate, negative rod and reinforced nylon cloth as the backing, and the outer layer is covered with rubber. The valve flap switch life can reach 1 million times. The valve adopts the design of full flow area, which has the characteristics of small head loss, not easy to pile up various debris, and easy maintenance. The valve is mainly suitable for water supply and drainage system and can be installed at the water outlet of the pump to prevent backflow and water hammer from damaging the pump. The valve can also be installed on the bypass pipe of the water inlet and outlet pipes of the reservoir to prevent the backflow of pool water into the water supply system.

    Company Advantage

    Lead Time: If regular valves, our lead time is short because of our huge stocks for valve parts.

    QC: Our regular customers have been working with us more than 10 years as we always keeping our high-level QC for our products.

    Price Advantage: Our price is competitive because we process valve parts by ourselves.

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