PRESSURE-BALANCED CONTROL VALVES
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United States of America Patent
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Issued Date -
Nov 6, 2014
app pub date -
Apr 30, 2014
filing date -
May 1, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Embodiments of the present disclosure are directed to pressure balanced solenoid control valve for high flow and/or high pressure control applications. An all-sealed integrally formed element functions as both the bellows and spring and is used as a replacement for the combination of both the individual bellows and spring found in existing pressure balanced control valves. The single bellows spring provides a spring force on the movable valve plug and separates opposite sides of the valve plug, wherein a gas passageway is provided between opposite sides of the valve plug so that gas provided at the inlet will flow to opposite sides of the valve plug so as to cancel any pressure forces provided on opposite sides of the valve plug by the pressure of the inlet gas.
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