Ball valve system
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United States of America Patent
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Oct 6, 2020
Grant Date -
Feb 15, 2018
app pub date -
Aug 9, 2016
filing date -
Aug 9, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A ball valve positioned between a first line and a second line includes a housing and a ball disposed a ball disposed within the housing. The ball includes a bore and is configured to rotate between an open position and a closed position. The ball valve also includes an annular seat disposed between the housing and the ball. The annular seat includes a first annular sealing ring extending circumferentially about a radially-outer surface of the annular seat and an axially-extending passageway extending through the annular seat to enable fluid flow from a valve cavity to an annular space between the annular seat and the housing. The first annular sealing ring, the axially-extending passageway, and the annular space facilitate movement of the annular seat away from the ball as the ball rotates from the closed position toward the open position.
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