Safety valve assembly having set and reset mechanisms
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United States of America Patent
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Oct 14, 2008
Grant Date -
Apr 6, 2006
app pub date -
Nov 23, 2005
filing date -
Aug 30, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A valve assembly includes an automatic excess flow shut-off mechanism for preventing excess flow between an inlet and an outlet of the assembly. The excess flow shut-off mechanism is adapted to automatically stop fluid flow through the valve assembly when the flow exceeds a specified flow rate. The excess flow shut-off mechanism prevents flow when it's set and allows flow when it's reset. The valve assembly also includes a manual set mechanism for setting the excess flow shut-off mechanism even when there is no excess flow. The valve assembly additionally includes a manual reset mechanism for resetting the shut-off mechanism and for allowing excess flow.
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