Safety valve assembly for fluid system

Details Safety valve assembly for fluid system Safety valve assembly for fluid system

1990-05-10

1990-12-11

Hepperle, Stephen M.

Fluid handling

Line condition change responsive valves

Safety cut-off requiring reset

137462, F16K 1732

Patent

active

049762818

ABSTRACT:
The safety valve assembly of the present invention for use in a closed fluid system comprises a valve housing including a central throughbore divided into an inlet end and an outlet end which communicate with one another via an axial passageway parallel thereto. Access to an inlet of the passageway is controlled by a valve element which is movable between a standby position solely in response to a differential fluidic pressure developed when a leak develops in the closed fluid system downstream of the safety valve assembly to isolate the leak from the remainder of the system. A bleeder valve assembly is also provided to return the assembly to a standby position thereof once the downstream leak has been eliminated.

REFERENCES:
patent: 1448193 (1923-03-01), Carr
patent: 2127849 (1938-08-01), Stone
patent: 3023591 (1962-03-01), Tilney
patent: 3476141 (1969-11-01), Tillman
patent: 3779273 (1973-12-01), Stone et al.
patent: 3805824 (1974-04-01), Robbins

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