换向阀结构及其部件及其制造方法

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文档信息

【标题】换向阀结构及其部件及其制造方法

【发明人】 Bauer  Werner R. 

【公开日期】1980-12-09

【分类号】F16K 1107

【摘要】A reversing valve construction having a housing provided with a chamber carrying a movable piston-like 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 comprise first, second and third ports that all face in the same direction at the valve seat and are disposed in spaced apart and straight line relation and the cavity faces the ports and bridges the first and second ports while exposing the chamber to the third port when the valve member is in one position thereof and bridges the second and third ports while exposing the chamber to the first port when the valve member is in another position thereof. A flexible sealing annular member is disposed between the valve member and the valve seat and surrounding the cavity to be movable relative thereto to seal the cavity of the valve member to the valve seat while permitting sliding movement therebetween. A biasing member is operatively associated with the valve member and the flexible sealing member to urge and flex the sealing member relative to the valve 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.

【申请号】9597417

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