Professional Manufacture Hot Sale Rubber Duckbill Check Valve

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.

5. Our Advantages:

Henan Liwei Industry Co., Ltd. Is a leading manufacturer of piping expansion joint in China. We have: 
(1)More than 24 years experience of manufacture
(2)The Main Drafting Units of Chinese Standard flexible rubber joint
(3)Compensator engineering research center of Zhengzhou city.
(4)Member of CNEA(China Nuclear Energy Association )
(5)ISO9001:2008 and ISO14001:2004 certificated by CNAS(China National Accreditation Service for Conformity Assessment)
(6)The largest vulcanizing equipment in China.


6. Delivery time & Packaging details:

 1)Delivery time:

Within 30 days after receipt of the deposit, or as your request:

2) Packaging details:

Unfumigation wooden case (out package) and plastic film and textile membrane(inside package). We can make change as your request.


Thanks for your attention. For more information, please feel free to contact us.
Sunny Yue
Mobile: +86-13303813898


Some dates for duckbill check  valve for sale :

Matdhing Pipeline DN	Valve Step	Pipeline Touching
1/2-3/4	15	15
1-1-1/4	20	20
1-1/2-2-1/2	25	25
3	40	40
4	50	50
6	50	50
8	50	50
10	50	50
12-14	100	100
16-20	150	150
24-36	200	200
42	250	250
48-60	300	300
72	400	400