What is a duckbill valve?

Duckbill valve, also known as rubber blowdown check valve, blowdown rubber check valve, rubber check valve, rubber check valve, etc. Used in waterproof system, drainage system, water pump outlet, lifting pump station and submerged aeration system. The main feature of this product is that the rubber flange and the valve body are integrated, and the installation is very convenient. The valve body adopts all rubber design, which will not cause siltation and things getting stuck, reduce maintenance cost and let solid particles pass smoothly.