Pressure abatement emergency shut down assembly with a collapsible member retained valve member
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United States of America Patent
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Oct 30, 2012
Grant Date -
N/A
app pub date -
Apr 13, 2009
filing date -
Mar 10, 2009
priority date (Note) -
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Abstract
A fluid control assembly configured to isolate a pressurized fluid, including an under pressure abatement assembly having a collapsible member and an energy storage member for exerting a collapsing force on the collapsible member while contactingly engaging a pivotal valve member. A conduit path directs pressurized fluid to exert a force in opposition to the collapsing force so that when the fluid pressure falls below a low pressure threshold, the collapsing force will collapse the collapsible member and release the valve member. An over pressure abatement assembly can be included having a second collapsible member and a second valve member, a conduit path directing pressurized fluid to exert a force in a direction to collapse the second collapsible member and release the second valve member when the fluid pressure exceeds an upper pressure threshold.
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