lap gate valve
1. A polar resin with high crystallinity.
2.Good heat resistance and cold resistance.
3.Good look
4.flap val

Flap valve / Check valve / flap gate

Flap valve which depends on its gravity and pressure difference inside and outside and shoot

the door, open and close automatically to achieve the effect of overflow and non-return

valve devices, including tidal gate valve, check valve or one-way valve.

The main performance parameters:

1. Material: GRP   BMC   HDPE   Cr13   Q235

2.Temperature: -20°C-60°C (requirements under the maximum design 3.temperature 120 °C

flap valve)

4. Working pressure: 1-1.6MPa

5.Opening angle of the cover: >75°

6.Closed time: <2s

7. Open water level:

(1).GRP cover shoot inside and outside the door open when the water level difference of ≥

40mm

(2). HDPE cover shoot inside and outside the door open when the water level difference of

>5mm

The open water level associated with the flap valve's open angle weight, diameter size of

the relevant. The open water level can be designed according to user needs.

8. Proportion: GRP flap valve 1.6¬-1.9 g/cm3

                     HDPE flap valve 0.94-1.17g/cm3

9.Save energy: ≥10% 

10.Design head: ≤15m( HDPE flap valve ≤5m)