Product Name: Clap door
1. Product Name: Clap door, clap door valve
2. Product model: PM FPM
3. Product specification: DN 100-dn2000 cast steel flap door
2、 Application of clapper gate valve products;

As a one-way valve at the outlet of the drainage pipe, it has the function of automatic closing to prevent the backflow of tide in the river. It can be divided into square flap door and round flap door.

There are two kinds of clapper door produced by our factory, which are round flap door (pm-y type) and square clapper door (pm-f type). Both of them are of double hinged chain type, with simple structure and good sealing performance. The maximum working water pressure is 6m head.

1. Design and manufacture according to GB 12235-59
2. The structural length shall be in accordance with GB 12221-89
3. Flange size shall be in accordance with JB / t79-94
4. Valve inspection and test shall be in accordance with GB 13927
Material of main parts of flap gate part name: valve body / valve cover valve disc stem stem nut packing gasket material CF8 f304 f304 qal-4 PRFE PRFE copper alloy f304 f304 qal-4 PRFE PRFE