Short Description:

Specification: The flap valve is a one-way valve installed at the outlet of the drainage pipe on the river dam. At the end of the drainage pipe, when the water pressure upstream is greater than the hydrostatic pressure of river tide, flap valve will open. Opposite, the flap valve’s disc will automatically closed to prevent the river tide from pouring into the drainage pipe. Application: Suitable for river water, sea water, citizen and industrial sewage and etc. No. Name Mat...