Pressure balanced solenoid operated valve
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United States of America Patent
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Aug 11, 2015
Grant Date -
Aug 15, 2013
app pub date -
Feb 14, 2012
filing date -
Feb 14, 2012
priority date (Note) -
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Abstract
A pressure balanced solenoid operated valve includes a solenoid portion having a coil in a coil retainer. A valve member portion defines a body connected to the solenoid portion. A slidable valve member in the body has opposed first and second ends and a shoulder between the ends. The first end with the coil energized is magnetically drawn toward the coil retainer moving the valve member between a valve closed and a valve open position. A pressure equalizing passage extends in the valve member from the second end. An inlet passage communicates a pressurized fluid at a valve inlet port to the pressure equalizing passage. A connecting passage communicates between the pressure equalizing passage and the shoulder. The pressurized fluid in the pressure equalizing passage acts against the second end and equally and oppositely against both the shoulder and the first end in both the open and closed positions.
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