Valve assembly and method
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United States of America Patent
Stats
-
Oct 25, 2016
Grant Date -
Jul 18, 2013
app pub date -
Jan 18, 2013
filing date -
Jan 18, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A valve assembly includes a housing defining a cavity and a bore which opens into the cavity. A valve member is disposed in the cavity. The valve member moves between an open position for allowing fluid flow through the housing and a closed position for preventing fluid flow through the housing. An actuator extends through the bore for moving the valve member between the open and closed positions. A packing is positionable in the bore to provide a seal about the actuator for preventing fluid from exiting the housing through the bore. The packing is ejectable from the bore. The valve assembly includes a first and second biasing member. The first biasing member is configured to apply a first force to the packing to provide the seal. The second biasing member is configured to apply a second force to the packing for ejecting the packing from the bore.
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Cited Art Landscape
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