Flow control valve with internal isolation means
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United States of America Patent
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Jul 17, 2012
Grant Date -
Feb 2, 2012
app pub date -
Jul 30, 2010
filing date -
Jul 30, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A combination valve assembly comprises an inner valve nested within an outer valve. The outer valve comprises a housing and a closure, permitting full closure of the valve assembly. The inner valve comprises a housing and a closure, permitting flow control by the inner valve within requiring movement of the outer valve. The housing of the inner valve is keyed to the outer valve closure, so that movement of the outer valve closure rotates the inner valve housing and closure simultaneously.
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