Pressure regulator with integrated reverse pressure exhaust
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United States of America Patent
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Issued Date -
Dec 30, 2004
app pub date -
Jun 27, 2003
filing date -
Jun 27, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A control valve system is disclosed which provides a mechanism by which the valve can be moved to its fail-safe position. The system includes a valve actuator which receives pressurized fluid from a regulator. The regulator is provided with a reverse pressure exhaust valve such that if pressure within the valve actuator is to be alleviated, as when the valve is to be positioned into its fail-safe position, the reverse pressure exhaust valve is opened thereby providing an immediate and accurate passageway through which excess pressure within the regulator outlet can be alleviated.
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