1.Specifications

1)good seal,long service life 
2)no failure, maintenance free 
3)easy install ,low cost, 
4)100% full rubber

2.Introduction

Duckbill valves are unique, one-piece, elastomeric components that act as backflow prevention devices or one-way valves or check valves. They have elastomeric lips in the shape of a duckbill which prevent backflow and allow forward flow. The main advantage of duckbill valves over other types of one-way valves is that duckbill valves are self contained i.e. the critical sealing function is an integral part of the one piece elastomeric component as opposed to valves where a sealing element has to engage with a smooth seat surface to form a seal. Therefore duckbill valves are easily incorporated and assembled into a wide variety of devices without the hassle or problems associated with the surface finish quality of mating seats and/or complex assembly processes.

3.Feature for Socket Duckbill Valve
 
1)100% full rubber structure, and can meet various anti-corrosion requirements (according to the actual demand,
can choose different rubber material).
2) don't jam, sealing good.
3) long service life, no failure, maintenance free.
4) no moving parts and mechanical parts, no electrical signal and artificial operation, no noise.
5)opening pressure is small, can open.more than 0.01 m head 
6) general conditions, the head loss can be to the minimum degree.
7) can transform various installation form, to meet customers' needs.
Eight, installation is convenient, operation cost little.

4.Application for The Rubber Duckbill Valve

Rubber slow closed check valve (rubber duck mouth valve) used for sewage system, discharge system, the dam discharge, airport/highway drainage, sewage pool emission, smell block has obvious effect. Adopts full rubber structure, never rust or corrosion. It Won't warp or frozen in open and closed, exempt from backflow. above all it can not hang open More caused by faecal/dross gathered , provide tight seal.this product used in urban sewage system, in case that  much rain, it can prevent urban river water flowing back in the pipeline, so as to prevent water back to the city streets overflow. therefore our company specially designed a new method of installation for installation. In the application in sewage pool when discharging some product can prevent sewage from processing water pool back to untreated pool, the overall structure of rubber products made away from the influence of the external things when opening and closing.Free maintenance. Airport, highway drainage this product can be used for this need large drainage place, such as airports, highways and parking lots, etc., and can be applied to some poisonous plant emissions, such as hydrocarbon treatment plant. Free maintenance.
 

Some dates for duckbill check  valve for sale :