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The Shand & Jurs Model 94560 Combination Valve and Flame
Arrester design provides for maximum flow capacity, minimum leakage and a
positive flame stop on low pressure tanks containing flammable liquids or
solvents having low flash points. This single piece of equipment provides
pressure/vacuum venting and a flame arrester. Only one installation is required
for both the venting and flame arrester functions.
The conservation vent portion
of the unit features diaphragms that are cushion seated and constructed of FEP
Teflon for reliability and extended service life. This contributes to high
resistance to adhesion of ice and gum formations of the pallet and its seating
surfaces. The body of the valve is selfdraining and drip rings keep condensation
from the seating surfaces.
FM approved, the flame arrester contains a unitized
tube bank. The tube bank is formed by spirally winding alternate flat and
corrugated sheet stock around a solid core, maximizing flow capacity and
minimizing pressure drop. This proven design insures uniformity of free area
flow and allows for years of dependable service.
Quick access to the flame
arrester element is attained through use of swing bolts and a hinged conservation
vent. Once the wing nuts are loosened, the bolts swing away and the vent lifts
clear, the flame arrester element can be accessed for inspection and servicing.
The conservation valve is weight loaded for both vacuum and pressure venting.
The conservation valve is located on top of the flame arrester body and is
attached by using quick release bolts and hinge. This permits easy removal of
the conservation valve for inspection and/or replacement of the flame arrester
tube bank. The weather hood of the conservation valve is stainless steel.
Standard pressure and vacuum settings are 1/2 oz./sq. in. with maximum pressure
settings of 24 oz./sq. in. and 5 oz./sq. in. for vacuum. Its flow capacity is
certified in accordance with API standards.
Shand & Jurs Model 94560 Combination
Conservation Valve and Flame Arrester is available in 2, 3 and 4 inch sizes
with flat or raised face flanges to match drilling of ANSI 150# specifications.
Standard construction includes lightweight cast aluminum, cast iron, cast steel
and 316 stainless steel as standard. For highly corrosive and severe conditions,
special materials are available. Steam jacketing is available as an option.
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