Duckbill valve is a kind of check valve,it is stretched over the outlet of a supply line, conforming itself to the shape of the line, usually round. The other end, the duckbill, retains its natural flattened shape. When a fluid is pumped through the supply line and therefore the duckbill, the flattened end opens to permit the pressurized fluid to pass. When pressure is removed, however, the duckbill end returns to its flattened shape, preventing backflow.

duckbill valve connects to pipes by flange or clamp
the body is consist of rubber and flange or clamp

working pressure:PN6
Size:DN50 to DN2000

Zhixin Valve Co.,Ltd manufactures and supply duck bill valve in China,welcome to contact us price and technical data sheet
email:zxfvalve@163.com