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The Shand & Jurs Model 96330 Internal Safety Shutoff and
Operating Valve provides automatic, foolproof, quick acting shutoff, of product
flow in tanks and manifold lines. Extremely versatile, it can be mounted in the tank,
or in line. This valve is used most effectively for safety shutoff or operating
valve in manifold lines. Its action is bi-directional with respect to flow and
pressure, and its balanced piston design resists opening due to tank or line pressure.
This valve also is ideally suited for "switch service" of LP-GAS, anhydrous
ammonia, and similar products. Alternate materials of construction maybe
specified to meet other product requirements and operating temperatures in
the range of -50° to +150°F.
The Model 96330 Internal Safety Valve is designed
to be held in a normally closed or open position by a spring-loaded balanced
type piston. The valve checks closed in either direction when operating pressure
is removed.
Several unique items are incorporated providing the most reliable quick-closing
shutoff valve available.
- The piston seal is sensitive to pressure differential
to seal fluid in either direction. It is self adjusting to pressure conditions,
and the configuration provides ideal wiping and bearing action.
- The plunger seal is spring-loaded to adjust to wear and thermal conditions.
- The valve ring is self-aligning to assure proper seating action in a design
that permits greater seating thrust than available in conventional flat scaling
systems. Valve ring and seating design also incorporates a self-cleaning function
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