Valves and valve actuation – With material guide or restrictor – Movable or resilient guide or restrictor
Patent
1990-01-22
1992-01-21
Rivell, John
Valves and valve actuation
With material guide or restrictor
Movable or resilient guide or restrictor
251118, 251205, 137510, F16K 4704
Patent
active
050822390
ABSTRACT:
The disclosed valve may be configured for use as a pressure relief valve, pressure regulator valve or pressure reducing valve. A pair of opposed valve members defines a radial flow path therebetween which extends from the outer radial peripheries of each valve member to an axial bore formed in one of the valve members. The other valve member comprises a substantially pressure balanced piston, the axial movements of which control flow through the valve. A pilot valve for relieving pressure above the piston has its inlet positioned within a cavity formed on the upper surface of the piston.
In a second disclosed valve, a pair of opposed valve members defines a radial flow path therebetween which extends from the outer radial peripheries of each valve member to an axial bore formed in one of the valve members. The other valve member is mounted on a stem having an upper end which is urged upwardly by a spring disposed around the stem. A substantially cylindrical element is threadably engaged in the upper end of a valve body in which the valve members are received and the stem is urged thereagainst. In another embodiment, the stem is fixedly connected to the cylindrical element. Rotational movement of the cylindrical element axially moves the stem thereby controlling flow through the valve.
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Rivell John
LandOfFree
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