FLUID VALVES HAVING MULTIPLE FLUID FLOW CONTROL MEMBERS
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United States of America Patent
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Issued Date -
Feb 14, 2013
app pub date -
Jul 20, 2012
filing date -
Aug 11, 2011
priority date (Note) -
Abandoned
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Abstract
Fluid valves having multiple fluid flow control members are described herein. An example valve trim apparatus includes a first flow control member disposed in a passageway of a fluid valve, the first flow control member moves relative to a first orifice of the passageway to provide a first fluid flow characteristic through the passageway. A second flow control member is disposed within the passageway and is to move relative to a second orifice of the passageway defined by the first flow control member when the first flow control member is in sealing engagement with the first orifice to provide a second fluid flow characteristic through the passageway. The first fluid flow characteristic is different than the second fluid flow characteristic.
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