Actuator for actuating valves

Details Actuator for actuating valves Actuator for actuating valves

1989-05-12

1990-08-21

Walton, George L.

Valves and valve actuation

Fluid actuated or retarded

With mechanical movement between actuator and valve

92 136, 92136, 92138, 251 62, 251229, 251250, 251 14, F16K 31163, F15B 1524

Patent

active

049499360

ABSTRACT:
The actuator comprises an actuator body including a cavity in which there are housed two pistons movable in opposite directions and including toothed portions meshing with a toothed pignon rigid with a shaft to be coupled to the spindle of the valve element to be actuated, there being moreover provided end of stroke abutment members which can be adjusted from the outside of the body and which are engaged by the pistons in order to adjust the opening and closing srokes of the valve element.

REFERENCES:
patent: 3107080 (1963-10-01), Priese
patent: 3199416 (1965-08-01), Robson
patent: 3982725 (1976-09-01), Clark
patent: 4087074 (1978-05-01), Massey et al.
patent: 4167897 (1979-09-01), Bunyard
patent: 4651626 (1987-03-01), Messina

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