Ball valve having multiple moveable seats
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United States of America Patent
Stats
-
Feb 11, 2014
Grant Date -
Aug 30, 2012
app pub date -
Feb 24, 2011
filing date -
Feb 24, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Embodiments and methods are disclosed herein that relate to a valve assembly. The valve assembly includes a housing having a passage formed therethrough, and a valve ball having a through hole and disposed in the housing, in which the valve ball is rotatable between an open position that has the through hole aligned with the passage and a closed position that has the through hole misaligned with the passage. The valve assembly further includes a first seat having a first sealing surface and disposed in the housing adjacent to the valve ball, and a second seat having a second sealing surface and disposed in the housing adjacent to the first seat such that the first sealing surface of the first seat is disposed adjacent to the second sealing surface of the second seat. At least one of the first sealing surface of the first seat and the second sealing surface of the second seat comprises an arcuate surface.
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Family
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Cited Art Landscape
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