Valve for fire extinguishing system of gas distribution type

Details Valve for fire extinguishing system of gas distribution type Valve for fire extinguishing system of gas distribution type

1976-08-25

1979-01-30

Schwadron, Martin P.

Valves and valve actuation

Fluid actuated or retarded

Piston type expansible chamber reciprocating valve actuator

251 635, 251282, F16K 31122

Patent

active

041368517

ABSTRACT:
A line or directional valve of the type that is adapted for use in fire extinguishing systems of the gas dissemination type is provided, employing a moveable piston adapted to be unseated from a valve seat, upon delivery of fluid for opening thereof, wherein the forces of the valve piston against the valve seat are reduced and controlled by utilizing inlet fluid pressure that is operative against the piston in such a way as to reduce the forces from inlet fluid pressure on the piston to a desired net or resultant force. A vent is also provided for facilitating keeping the piston open after its initial opening.

REFERENCES:
patent: 2083695 (1937-06-01), Dull
patent: 2619120 (1952-11-01), Page et al.
patent: 2799466 (1957-07-01), Hickerson
patent: 2996074 (1961-08-01), Page et al.
patent: 3358964 (1967-12-01), Cohen et al.

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