Multiple pressure ratio valve assembly
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United States of America Patent
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Feb 17, 2015
Grant Date -
Dec 11, 2014
app pub date -
Jun 7, 2013
filing date -
Jun 7, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A multiple pressure ratio valve assembly is provided that may be used in a plurality of systems requiring different operating pressures. In one embodiment, a valve assembly and a plurality of interchangeable valves is provided, the interchangeable valves being configured to be installed within the same valve bore diameter, and the valves having different surface areas such that a pressure ratio of the valve assembly may be varied depending on which of the plurality of valves is installed. In some embodiments, the valves may have one or more fluid bypass portions. Embodiments of the invention may also include one or more shims that may be used to further adjust the pressure ratio of the valve assembly. Methods of repairing a valve assembly are also provided.
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