Wastewater Duckbill Valve, River Outlet Duckbill Valve

It automatically opens for drainage under the positive pressure of the medium, and automatically closes to prevent backflow under the reverse water pressure. It has no motor or transmission device, an

The valve flaps are tightly sealed together, completely blocking the return flow of rainwater, sewage, and seawater tides.

There are various connection methods such as flange, socket, and clamp. They can be used in rivers, municipal water supply networks, sewage outlets, coastal tidal areas, and sewage treatment plants.