Dual inline rupture pin release and reseating spring loaded relief valve
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United States of America Patent
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-
Nov 11, 1997
Grant Date -
N/A
app pub date -
Oct 5, 1995
filing date -
Oct 5, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A toxic and corrosive fluid monitoring relief valve is formed by a valve body containing inline fluid pressure relief valves respectively opened in response to a first and a second fluid pressure. Fluid pressure in excess of the first fluid pressure opens the first valve by rupturing a pin normally maintaining the first valve closed to allow fluid contained by the valve body, to act on the second downstream relief valve. The second downstream valve being spring-loaded to open at the second predetermined fluid pressure and exhaust fluid pressure in a blow down action and reclose the valve when the excess fluid pressure has been reduced.
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