Safety shut-off valve

Details Safety shut-off valve Safety shut-off valve

1980-02-19

1982-03-16

Weakley, Harold W.

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

137504, 137460, F16K 3112

Patent

active

043196047

ABSTRACT:
In a safety shut-off valve, a housing includes a valve member therein, having a first valve seat, and against which a valve normally rests during closure, with a spring normally biasing said valve off of said first valve seat, and with the force of the pressurized fluid passing through the valve causing said valve to act against the force of a regulator and a second spring to become unseated for allowing gas flow, and reseated once again against a second valve seat when excessive pressure is encountered and which curtails the further flow of fluid through the valve housing, and thereby shutting off the fluid from its source.

REFERENCES:
patent: 347840 (1886-08-01), Stubbe
patent: 1410218 (1922-03-01), Palmer
patent: 2229893 (1941-01-01), Hubka
patent: 2668555 (1954-02-01), Bentolat
patent: 3085589 (1963-04-01), Sands
patent: 3094141 (1963-06-01), Maienknecht
patent: 3106937 (1963-10-01), Sands
patent: 3122162 (1964-02-01), Sands
patent: 3367360 (1968-08-01), Hickerson
patent: 4010770 (1977-03-01), Peters

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