Pressure-balanced control valves
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United States of America Patent
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Dec 29, 2015
Grant Date -
Feb 2, 2012
app pub date -
Feb 5, 2010
filing date -
Feb 5, 2009
priority date (Note) -
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Abstract
A valve assembly comprises a valve body comprising a plug chamber. A static seal is disposed adjacent an inner sidewall of the plug chamber, and a plug comprising a plug head is moveably positioned within the plug chamber, the plug head being configured to contact the static seal only when the plug is adjacent to a seat ring. Methods of using a valve and methods of forming a valve assembly are also disclosed.
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