Qingdao Hyperway International Trade

https://qd-hyperway.aliyun-hk05.hicheng.net/164.html

Ductile cast iron check valves are double flanged, resilient seated. They are widely used to prevent backflow of water by rubber-flap in potable water system or sewage system.

Processing standard: DIN EN  12334

Face to face according to: DIN EN 558-1 series 48

Flange standard: DIN EN 1092-2

Valve body and seat pressure standard: DIN EN 1563

Material standard: KTW and DVGW W270