Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface
Patent
1998-04-17
1999-08-17
Hepperle, Stephen M.
Fluid handling
Line condition change responsive valves
With separate connected fluid reactor surface
137613, 137906, 137907, 251118, F16K 31365
Patent
active
059378956
ABSTRACT:
The present invention uses a regulator in the form of dispensing check valve and a flow restriction arrangement to provide a virtually fail safe system for preventing hazardous discharge of fluid from a pressurized cylinder or tank. A diaphragm controls the movement of a check valve element to prevent discharge of gas from a tank unless a predetermined vacuum condition exists downstream of the check valve. A capillary tube or other structure that provides capillary size opening minimizes any discharge of gas in the unlikely event of a failure of the regulator. This system is particularly useful in the delivery of arsine gas and provides multiple safeguards against accidental discharge.
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Le Febre David A.
Martin, Jr. Thomas B.
Hepperle Stephen M.
McBride Thomas K.
Tolomei John G.
UOP LLC
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