China Ductile Iron Body CF8M Disc Dual Plate Check Valve Manufacturer, Factories
Product Description
Check valve, 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.
| Size & Pressure Rating & Standard | |
|---|---|
| Size | DN50-DN800 |
| 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. |
A check valve (also called a one-way valve or back pressure valve) automatically prevents the backflow of fluid media in a pipeline, protects pumps and driving motors from reverse rotation, and prevents container media discharge.
The valve contains two semicircular plates. Forward flow pushes the plates open, while reversal of flow activates spring-forced reset combined with backpressure to instantly close the valve tightly.
Yes. Due to its compact wafer design, lightweight construction, and spring-assisted closure mechanism, it is suitable for both horizontal and vertical pipeline configurations.
With suitable material selections, they operate reliably with water, steam, oil, nitric acid, acetic acid, strong oxidizing media, and urea across petrochemical, power, metallurgy, light industry, and food processing applications.
The valve is manufactured in sizes ranging from DN50 to DN800, with nominal pressure ratings including PN6, PN10, PN16, and ANSI Class 150 (CL150).
Body options include Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel, Duplex Stainless Steel, Bronze, and Aluminium Alloy. Resilient seat configurations include NBR, EPDM/REPDM, PTFE/RPTFE, Viton, Neoprene, Hypalon, Silicon, and PFA.
