Installation control valves

Details Installation control valves Installation control valves

1980-09-11

1983-01-11

Walton, George L.

Valves and valve actuation

Fluid actuated or retarded

Flexible wall expansible chamber reciprocating valve actuator

169 20, 251305, 251308, 251335A, F16K 31126

Patent

active

043678610

ABSTRACT:
An installation control valve, for example for use in a fire fighting sprinkler installation, comprises a pivotal butterfly valve disc co-operable with a movable stop, which in one position abuts the valve disc to retain the valve closed against pressure forces acting thereon. A retaining mechanism is releasably held to resist stop movement and so prevent valve disc opening but is operable under a predetermined condition to permit stop movement from said one position to a second position. When the stop is in the second position, unequal pressure forces on either side of the valve disc cause same to move thereby opening the valve.

REFERENCES:
patent: 1815355 (1931-07-01), Hamilton
patent: 1947309 (1934-02-01), Crowley
patent: 1976022 (1934-10-01), Hutchinson
patent: 2882010 (1959-04-01), Bryant
patent: 3262671 (1966-07-01), Muench
patent: 3307633 (1967-03-01), Newall
patent: 3771759 (1973-11-01), Pauquette
patent: 3960177 (1976-06-01), Baumann
patent: 3971414 (1976-07-01), Illing
patent: 4295632 (1981-10-01), Engelke

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