Xiamen Better Silicone Rubber Co.,Ltd
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Duckbill valves

Views: 34     Author: Site Editor     Publish Time: 2015-11-30      Origin: www.better-silicone.com

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.



 

Other not less important features include:
1)Position independent,
2)Low opening pressure- immediate free flow,
3)Non-tortuous flow path,
4)High flow rate vs. package size,
5)Virtually no internal volume and dead space,
6)Particle compliant,
7)Corrosion resistant,
8)Wear resistant and
9)very cost effective.

Silicone Duckbill valve

Silicone Duckbill Valves

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