Dual Plate Check Valve

The dual-plate check valve opening and closing member is opened or closed by the medium flow and the force to prevent the back flow of the valve from being called a check valve. Check valves are automatic valves, mainly used on pipes with one-way flow of media, allowing only the media to flow in one direction to prevent accidents.
The dual-plate check valve is used for pure pipelines and industrial, environmental, water treatment, high-rise building water supply and drainage pipelines to prevent reverse flow of media. The check valve adopts a clip type, the butterfly plate has two semicircles, and the spring is forcibly reset, and the sealing surface can be a body wear welding wear material or a lining rubber, and the utility model has wide application range and reliable sealing.

Nominal Diameter: 1-1/2 Inch-48 Inch (DN40-DN1200).
Pressure range: Class 150-2500 LB (PN16-PN420).
Working temperature: -196℃ - +560℃.
Body material: Cast Iron, Ductile Iron, Carbon steel, ASTM A352 LCB, ASTM A352 LCC, Stainless steel, Supper Duplex Steel (ASTM A182 F51, ASTM A182 F55), ASTM A995 4A, ASTM A890 5A, Alloy steel, Aluminum Bronze.
Design and manufacture: API 594, API 6D.
Face to face: API 594, API 6D, DIN 3202.
End Connection: ANSI B16.5, DIN 2543-2548, ASME B16.4, API 605.
Inspection and test: API 598.