• Duckbill  valve
  • Duckbill  valve

Duckbill valve

Material of duckbill valve:  NBR,EPDM,Neoprene,Fluororubber

Size of duckbill valve:  2inch(dn50)-40inch(dn1000)

Pressure of duckbill valve:  125LB(PN10)-150lb(PN16)

connection type for duckbill valve:  Flange(RF,FM) ,Anulated connection

Pressure testing according to :   API598, DIN3230,GB/T13927

Duckbill Valve also is the check valve,the anther name is rubber check valve for this valves, the body and seats are rubber,their appearance looks like a duck mouth. so we named it duckbill  valves.


Introduction for duckbill check valve:

The built-in duckbill valve is mainly used in sewage treatment, drainage system, pipeline and lift pump stations, etc. Raw material: Neoprene, Haipu Long, nitrile rubber, ethylene propylene rubber and fluorine rubber.


The built-in duckbill valve is mainly used in sewage treatment, drainage system, pipeline and lift pump stations, etc. Raw material: Neoprene, Haipu Long, nitrile rubber, ethylene propylene rubber and fluorine rubber.


Main Features:

1.The rubber flange and valve body are integrally connected, easy installation.

2. Full rubber design, no siltation or stuck, less maintenance costs.

3.Solid particles can flow through the valve smoothly.

duckbill valve

size for duckbill valve

Duckbill check valve is a new water supply and drainage valve with full rubber structure, duck-mouthed appearance and functions of positive flow-in and reserve cut-off. According to thrust analysis and calculation as well as different operation conditions, it is manufactured with different design mechanism and different rubber products by special processing, At positive operation the water flow inform entrance and the valve will be open at weak hydraulic pressure. the hydraulic pressure is higher .the valve gate will open more greatly and the water flow is greater ,At reserve operation, the valve gate closes naturally and seals tightly cut-off valve, the back pressure is higher, the valve gate closes more tightly and the seal effect is better. It is used widely in various drainage exits to prevent from pouring backwards and flowing backwards in city planning, water conservancy and sewage disposal etc, it is the ideal product to replace flap valve.



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