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The Shand & Jurs PVC Conservation Valves are designed for highly corrosive service
where toxic liquids are stored. They are an excellent alternative to coated metal construction,
where frequent corrosion due to the presence of pinholes is a problem. PVC valves are intended to
provide pressure and/or vacuum relief on atmospheric storage tanks requiring normal venting.
This valve functions in the same manner as standard metal construction pressure/vacuum valves,
preventing excessive product evaporation losses due to normal tank breathing. Controlling emissions
of toxic and corrosive vapors to the atmosphere is a beneficial consideration.
Available in
various venting configurations: pressure only, pressure/ vacuum or vacuum only,with choice of
end-of-line or pipeaway styles.
Valve construction is polyvinyl chloride throughout with flat
face flanges to match standard A.N.S.I.150 Ib. flanges.
Diaphragms are cushion seated and are
constructed of FEP teflon for reliability and extended service life. Valve design utilizes
both peripherally and stem guided pallets for dependable operation.
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