F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
137/34
F16K 17/40 (2006.01) F16K 17/38 (2006.01)
Patent
CA 1209877
ABSTRACT A pressure regulator having an automatic safety shutoff protective device. The pressure regulator has a valve movement control system comprising an improved valve stem assembly connecting the valve to a controllable flexible diaphragm such that diaphragm movement in response to a change in outlet pressure acts through the valve stem to move the valve. At least a portion of the valve stem assembly comprises a heat sensitive element which is fusible, flammable, or reactable in response to a predetermined internal heat level at which the element activates, i.e., fuses, burns, or otherwise reacts to remove any force acting on the valve by the valve stem. Biasing means constantly urging the valve to a closed position are activated when the heat sensitive element fuses, burns, or reacts, whereupon the valve automatically closes. In all cases, the heat sensitive element resides within the pressure regulator casing and is responsive to internal fluid heat energy. The pressure regulator is particularly adaptable to the pressure regulation of oxidant fluids and, in that application, provides additional safety in the event of internal fire by stopping the flow of oxidant fluid through the regulator.
416241
Mcquillen Joseph E.
Miller Keith A.
Snyder Richard H.
Werley Barry L.
Air Products And Chemicals Inc.
Mcfadden Fincham
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