Valve system and method
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United States of America Patent
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Dec 15, 2015
Grant Date -
Apr 3, 2014
app pub date -
Sep 28, 2012
filing date -
Sep 28, 2012
priority date (Note) -
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Abstract
A flow control valve includes a housing forming internal passages in fluid communication with a port of the valve, and an internal cavity. A flow direction block is disposed in the internal cavity and forms at least one flow passage extending through a portion thereof. The flow direction block is moveable within the internal cavity such that the free ends of the least one flow passage can be selectively aligned with a respective internal passage along an interface as the flow direction block is moved from a first, closed position to a second, open position. A seal is disposed around each interface and includes an internal face, which presses against an outer surface of the flow direction block, and an external face, which presses against the housing. Sealing function is improved, at least in part, by a differential fluid pressure that acts on the seal.
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