US 4,230,161 AGranted

Thermal manual emergency shut off valve

AssigneeRego Company

InventorsEvans R. Billington, Robert J. Batka, Christ P. Korbilas

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Abstract

Multi position flow check valves for both liquid and vapor filler conduits having essentially two positions, a closed position, and a wide open flow position to activate the latch, the valve being automatically closed from the flow position under hazardous conditions including equipment accidents and fires, and open only when manually opened for latching purpose in tank filling operations at bulk storage stations. One hazardous condition includes an appreciable stretch strain exerted on filler hoses connected between the storage supply tank and the mobile delivery tank sufficient when dangerous to close the valves and prevent serious escape of gases in event of hose rupture. Non-extendible elements providing the differential criteria also serve as remote shut-off controls, including manual, automatic and thermal for safety termination of a refilling operation.

Claims9

Dependent claims

A fluid transfer system for directing the transfer of fluid between a stationary fluid supply tank and a mobile fluid delivery tank and for stopping the transfer of fluid between the stationary fluid supply tank and the mobile fluid delivery tank in response to a predetermined emergency condition, said fluid transfer system comprising:

(a) a rigid fluid transfer conduit connected to the stationary fluid supply tank;
(b) a flexible fluid transfer conduit formed from elastic material and serially connected between said rigid fluid transfer conduit and the mobile fluid delivery tank;
(c) flow check valve means mounted in said rigid fluid transfer conduit to close off the flow of fluid therethrough;
(d) resilient means for urging said flow check valve means to a closed position;
(e) manual means for opening said flow check valve means to a full-open position;
(f) latch means for releasably holding said flow check valve means in said full-open position;
and
(g) emergency trip means for actuating said latch means to close said flow check valve means whenever said flexible fluid transfer conduit is stretched beyond a predetermined limit, said emergency trip means including a non-elastic elongated element having a first end connected to said latch means and a second end fixedly secured to a remote point on said flexible fluid transfer conduit such that said latch means is released by said non-elastic elongated element to close said flow check valve means whenever the distance between said latch means and said remote point is increased beyond a predetermined amount as a result of the stretching of said flexible fluid transfer conduit beyond said predetermined limit.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 05/951,165Filed 13 Oct 1978
Granted: 28 Oct 1980
Term ends: Not estimatedThe source records don’t support an estimate.

Classification19 codes

B67D 7/3218
Arrangements of safety or warning devices; Means for preventing unauthorised delivery of liquid: relating to emergency shut-off means
F16L 55/1022
Means for stopping flow in pipes or hoses: fluid cut-off devices automatically actuated
F17C 13/12
Details of vessels or of the filling or discharging of vessels: arrangements or mounting of devices for preventing or minimising the effect of…
F17C 2205/0317
Closure means: fusing or melting