●Description: Check valves (CV) are designed to allow the fluid/vapor to flow in only one direction to prevent backflow. There are four basic types: diaphragm check, lift check, swing check, and tilting-disk check. Check valves are also called non-return valves and are usually self-acting.

●Standards:

 Design: GB.

 Face to Face: GB12221.

 Flange: GB/T17241.6

●Materials: Ductile iron, cast iron

●Nominal sizes: DN80—1000mm

●Pressure: PN10/16/25

●Corrosion protection: Inside and outside FBE.

●Suitable medium: Water, oil, steam.

●Package: wooden case with plastic layer, wooden pallets with plastic layer, steel crates.