Fluid handling – Line condition change responsive valves – Pop valves
Patent
1988-01-25
1989-01-24
Schwadron, Martin P.
Fluid handling
Line condition change responsive valves
Pop valves
137542, F16K 1706
Patent
active
047995068
ABSTRACT:
An adjustable pressure relief valve is disclosed comprising a valve body having an inlet and an outlet, a valve seat associated with the inlet, a valve member configured to seal off the flow of fluids through the valve at the valve seat, an adjustment screw supported in the valve body to allow rotational but not longitudinal movement of the adjustment screw with respect to the valve body, a compression member connected to the adjustment screw and mounted within the valve body which moves longitudinally with respect to the adjustment screw when the adjustment screw is rotated and a resilient member biased between the compression member and the valve member. In the preferred embodiments, a connection between the adjustment screw and the valve member aligns the valve member with the valve seat. Also, the adjustment screw provides an unchanging stop surface to limit the lift of the valve seat as well as inside diameter guiding to prevent buckling of a helical spring used as the resilient member.
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Hepperle Stephen M.
Schwadron Martin P.
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