Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface
Patent
1981-06-22
1983-08-16
Nilson, Robert G.
Fluid handling
Line condition change responsive valves
With separate connected fluid reactor surface
92 86, 1375145, 251 54, F16K 1734
Patent
active
043985580
ABSTRACT:
A safety valve for isolating a portion of a service conduit from a vacuum generator should a leak occur in that portion of the service circuit. The safety valve has a housing with a chamber therein. The chamber has an inlet port connected to the service circuit and an outlet port connected to the vacuum generator. A wall member located in the chamber is biased by a spring toward a first position whereby the vacuum generator is connected to the service circuit. Should a leak occur in the service circuit, air flow through the chamber acts on the wall to overcome the resistance of the spring and moves the wall to a second position to seal the chamber and thereby interrupts air flow through the chamber to the vacuum generator.
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patent: 2518988 (1950-08-01), Hartley
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patent: 3735777 (1973-05-01), Katzer
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patent: 4221204 (1980-09-01), Meyer
Benditalia S.p.A.
Decker Ken C.
McCormick Jr. Leo H.
Nilson Robert G.
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