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The Shand & Jurs Model 94201 Emergency Vent and Manhole
Cover with Expanda-Seal™ is an economical solution to present day emergency
venting requirements. It is designed to relieve excessive internal pressure in
liquid storage tanks while providing excellent protection against costly tank
roof rupture repair. The Expanda-Seal™ design also decreases product leakage
below actual set point. The standard design is available in 20" & 24" flange.
The Model 94201 is available with low base for liquid overflow. When specified,
elongated guides and special stops can be provided to limit pallet lift. The
pallet guide is deep enough to assure proper reseating of pallet after pressure
relief at lower overpressures. Pallet will reseat when tank pressure drops below
set pressure.
For tank venting or examination, the pallet may be removed from its
base offering a clear unobstructed passage. A retaining cable is provided to
attach the pallet to the base.
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