Duckbill Check Valve

The duckbill check valve, also known as the duckbill valve, rubber sewage check valve, back-pressure flexible non-return valve, rubber non-return valve, rubber slow-closing check valve, etc., is a special type of pipeline valve. The duckbill check valve is made of elastic chloroprene rubber reinforced with artificial fiber through special processing, and its shape resembles a duck's bill. When there is no pressure inside, the duckbill outlet closes under its own elasticity; as the internal pressure gradually increases, the duckbill outlet gradually opens wider, allowing the liquid to discharge at high flow rates.