●Description: flap valve applicable to water supply and wastewater treatment projects in various pipe and water channel as overflow, check effect, also can be applied to various vertical shaft manhole cover; Only for one-way water flow of round, square or rectangular export, the structure is simple, reliable work, no human operation, usable flange connection, also can connect with embedded parts fixed.

●Standards:

 Design: GB.

 Face to Face: GB.

 Flange: GB/T17241.6

●Materials: Ductile iron, cast iron

●Nominal sizes: DN80—2000mm

●Pressure: PN10/16/25

●Corrosion protection: Inside and outside FBE.

●Suitable medium: Water, waste water.

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