Valves and valve actuation – Balanced valves – Reciprocating
Patent
1988-06-20
1990-02-20
Rivell, John
Valves and valve actuation
Balanced valves
Reciprocating
251120, 137509, 137524, F16K 3112, F16K 3900
Patent
active
049019783
ABSTRACT:
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
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