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The Shand & Jurs Model 94040 Spring Loaded Conservation Valve is designed utilizing over
75 years of experience in producing high quality and dependable conservation valves and safety fittings.
This valve meets the need of higher pressure settings required on storage tanks (ideally suited when blanketed
with nitrogen or other inert gas), process vessels and piping common to the petroleum, chemical and
petro-chemical industries.
Higher pressure settings are accommodated using a unique method of spring
loading which ensures highly reliable operation and reduces excessive venting of product at a relatively
low cost. Pressure settings range from 1 psi through 15 psi for sizes 2" to 10" and up to 10 psi for the
12" size. Screw and flange type connections are offered for the 2" and 3" size and flange only for sizes
4" to 12". Vacuum protection is provided utilizing a weight loaded vertical lift pallet assembly that
assures optimum air flow into tank.
The pallet to seat diaphragm is cushion seated Teflon for long
service life and optimum reliability. This diaphragm helps to ensure a high resistance to any ice and
gum formations, prevents the pallet from sticking to the seat. The carefully engineered body, seat and
pallet offers a superior combination of tight sealing and high capacity at lower over-pressure.
One of the most important features which should be noted in the Model 94040 design is the variety of
construction materials available. A wide range of highly corrosive and toxic products common to the
petroleum, petro-chemical and chemical industries, require that a conservation valve be able to with
stand this environment and still function reliably. For few instances where our standard materials
may not be suitable, optional materials are readily available.
Standard materials offered are aluminum,
cast iron, cast steel and 316 stainless steel. Standard seats are aluminum and 316 stainless steel.
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