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DUCKBILL VALVES, HOW THEY WORK!

27-Jun-2016by:Cathy

 

DUCKBILL VALVES, HOW THEY WORK!

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:

Position independent,

Low opening pressure- immediate free flow,

Non-tortuous flow path,

High flow rate vs. package size,

Virtually no internal volume and dead space,

Particle compliant,

Corrosion resistant,

Wear resistant and

last but not least very cost effective.

Minivalve Duckbill valves are available in various elastomeric material, including medical and food-grade silicone and 

 

hydrocarbon-resistant fluorosilicone rubber to handle a broad range of media and temperatures.

Duckbill valves have been around for many years. Their versatile features have made them first choice in a broad number of 

 

applications:

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