Valve construction and system utilizing the same

Details Valve construction and system utilizing the same Valve construction and system utilizing the same

1974-04-17

1976-04-13

Schwadron, Martin P.

Fluid handling

Convertible

Units interchangeable between alternate locations

1376255, 236 99C, G05D 2313

Patent

active

039497771

ABSTRACT:
A three-way changeover valve construction having a housing means provided with an inlet and a pair of outlets. A pair of valve seats are carried by the housing for respectively controlling fluid flow from the inlet through the outlets. A pair of valve members are provided for respectively controlling the valve seats with the valve members being operatively associated together to move substantially in unison relative to the valve seats in response to a condition sensed by a condition responsive device. A changeover device is operatively associated with the valve members to position the same to act respectively on one side of the pair of valve seats or on the other side of the pair of valve seats to change the valve construction from a cooling function thereof to a heating function thereof in response to a temperature change in the flowing medium.

REFERENCES:
patent: 1873769 (1932-08-01), Lang
patent: 2631781 (1953-03-01), Dillman
patent: 2778799 (1957-01-01), Lindsay
patent: 2942622 (1960-06-01), Hahn et al.
patent: 3149475 (1964-09-01), Gislason
patent: 3172600 (1965-03-01), Miner
patent: 3183933 (1965-05-01), Whitlock et al.
patent: 3237640 (1966-03-01), Whitlock et al.
patent: 3480041 (1969-11-01), Whitlock
patent: 3818981 (1974-06-01), Caldwell

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