Valves and valve actuation – Fluid actuated or retarded – Flexible wall expansible chamber reciprocating valve actuator
Patent
1975-11-19
1977-04-12
Schwadron, Martin P.
Valves and valve actuation
Fluid actuated or retarded
Flexible wall expansible chamber reciprocating valve actuator
F16K 31126
Patent
active
040170543
ABSTRACT:
A condition responsive valve construction having a housing provided with an inlet and an outlet leading to and from a chamber therein. A self-contained valve seat and movable valve member unit is removably disposed in the chamber to control the interconnection between the inlet and the outlet. Condition responsive means are carried by the housing for controlling movement of the valve member relative to the valve seat in relation to the condition sensed by the condition responsive means. The self-contained unit is either a direct acting unit or a reverse acting unit while still being adapted to be operated by the same condition responsive means whereby the condition responsive valve construction can be either direct acting or reverse acting, depending upon the self-contained unit removably disposed in the chamber thereof.
REFERENCES:
patent: 2615468 (1952-10-01), Woolley
patent: 3319649 (1967-05-01), Cummins
patent: 3322142 (1967-05-01), Baumann
patent: 3614055 (1971-10-01), Douglas
patent: 3704854 (1972-12-01), Katchka
Bible Harley V.
Moon, Jr. William T.
Robertshaw Controls Company
Schwadron Martin P.
Walton G. L.
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