Reversing valve construction and method of making the same

Details Reversing valve construction and method of making the same Reversing valve construction and method of making the same

1984-06-18

1986-01-14

Schwadron, Martin P.

Fluid handling

Systems

Multi-way valve unit

13762566, 13762525, 251 86, 251175, 251357, F16K 1102, F16K 31122

Patent

active

045640459

ABSTRACT:
A reversing valve construction having a housing provided with a chamber carrying a movable valve member therein that controls ports of a valve seat of the housing through the relative position of a cavity of the valve member relative to the ports, the ports comprising first, second and third ports disposed in spaced apart and straight line relation and the cavity bridging the first and second ports while exposing the chamber to the third port when the valve member is in one position thereof and bridging the second and third ports while exposing the chamber to the first port when the valve member is in another position thereof. The valve member carries a flexible annular sealing member that is disposed between an annular surface of the valve member and the valve seat and surrounds the cavity to seal the cavity to the valve seat while permitting sliding movement therebetween. The housing carries a biasing unit that is operatively associated with the valve member and the housing to urge and flex the sealing member into sealing engagement with the valve seat so as to tend to sealingly conform the flexible sealing member to the contour of the valve seat. The valve member has a rigid annular projection extending from the annular surface thereof and engaging the annular sealing member outboard of and around the cavity.

REFERENCES:
patent: 1998223 (1935-04-01), Czarnecki
patent: 2976701 (1961-03-01), Greenawalt
patent: 3032312 (1962-05-01), Greenawalt
patent: 3305207 (1967-02-01), Calderoni et al.
patent: 4144905 (1979-03-01), Bauer
patent: 4213483 (1980-07-01), Bauer
patent: 4240469 (1980-12-01), Bauer
patent: 4245670 (1981-01-01), Bauer et al.

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