Vernay Laboratories designs and manufactures
precision molded elastomeric parts. Our primary area of expertise
is in the design and manufacture of elastomeric check valves
for fluid control applications. Our standard product lines include
a variety of check valve designs both fully elastomeric and
elastomer over molded onto metal or plastic inserts. One of
these product lines is a family of poppets which can be used
to make valves. Both all rubber designs and designs with rubber
bonded to metal or plastic substrates are available.
Poppets are typically used as check valves, pressure relief
valves, or regulating valves. They can be more expensive to
apply than other all rubber valve designs but have several advantages
that make them the desired choice as check valves, pressure
relief valves and pressure regulating valves.
Typical Poppet Valve Applications
Some of the advantages of the Vernay¡¯s all rubber
and rubber tipped poppets include:
Superior sealing and leakage prevention due to the integrally
molded, permanently bonded seal and, with guided operation,
the sealing point consistently contacts the seat at the same
point each time allowing it to conform to the shape of the
seat.
Low noise (as compared to all metal poppet designs)
Streamlined flow around the ball or cone shaped tip
Precise opening pressure control as a result of using a metal
spring
Factors that should be considered when selecting a poppet
valve:
The environment the poppet will work in (fluid being controlled,
operating temperature, etc.)
Desired flow rate and pressure drop
Desired opening pressure
The control required (acceptable variation) of both opening
pressure and flow or pressure drop regulation
Acceptable noise generation
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