Valve actuating mechanism

Details Valve actuating mechanism Valve actuating mechanism

1994-02-07

1994-12-20

Walton, George L.

Valves and valve actuation

With means to increase head and seat contact pressure

With positive reduction

74 22R, 744248VA, 251229, 251267, 251309, F16K 2500, F16K 3152

Patent

active

053740300

ABSTRACT:
An improved valve plug actuator is provided which is substantially impervious to environmental contamination and which provides greater axial transfer of seating force to an associated valve plug. The actuator uses an indexing race formed in an indexing sleeve to support a thrust bearing on one side of an operating screw collar and an enhanced retaining ring to capture an opposing thrust bearing. Lubrication containment and environmental isolation of the interactive surfaces of the actuator is maintained by o-ring seals carried by the retaining ring and by a lowermost movable component of the actuator which also is rigidly affixed to the associated valve plug.

REFERENCES:
patent: 2459682 (1949-01-01), Carrie
patent: 2705609 (1955-04-01), Prescott
patent: 2795960 (1957-06-01), Heinen et al.
patent: 2858097 (1958-10-01), Blomstran et al.
patent: 2872155 (1959-02-01), Hazard
patent: 2889133 (1959-06-01), Blomstran et al.
patent: 3188049 (1965-06-01), Zawacki et al.
patent: 3198034 (1965-08-01), DeWitte et al.
patent: 4927113 (1990-05-01), Heinen

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