Fluid handling – Line condition change responsive valves – Line flow effect assisted
Patent
1982-02-12
1984-08-28
Weakley, Harold W.
Fluid handling
Line condition change responsive valves
Line flow effect assisted
13750525, 1376142, F16K 1734
Patent
active
044678282
ABSTRACT:
A movable tube controls the flow of fluid from supply through a regulator to discharge in response to pressure acting on a piston in a control chamber at discharge and opposed by a spring in a spring chamber. When the discharge pressure reaches a prescribed, regulated value, the tube no longer moves. The pressure drop through the regulator occurs at the outer diameter of the tube; consequently, no area of the tube sees supply side pressure that would tend to displace the tube. On the discharge side, the tube extends into a necked passage between a control chamber and an exit port to aspirate fluid from the control chamber and compensate for loss of spring force due to spring relaxation. The tube also closes when there is a sudden loss of discharge side pressure. The tube closes on the supply side against an elastomeric seat carried by a removable plug. The spring chamber is between supply side and discharge side downstream of a seal for the tube, and any leakage past the seal goes to atmosphere through a vent. More than one inlet and exit port permits flexibility in connection.
REFERENCES:
patent: 2748797 (1956-06-01), Heizer
patent: 2888949 (1959-06-01), Evans
patent: 3032054 (1962-05-01), Irwin
patent: 3033220 (1962-05-01), St. Clair
patent: 3094141 (1963-06-01), Maienhuecht
patent: 3387622 (1968-06-01), Weinstein
patent: 3799189 (1974-03-01), Christianson
patent: 3809441 (1974-05-01), Klimek
patent: 3890999 (1975-06-01), Moskow
Dual Fuel Systems, Inc.
Weakley Harold W.
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