Rotary valve operating mechanism

Details Rotary valve operating mechanism Rotary valve operating mechanism

1985-03-28

1986-07-01

Schwadron, Martin P.

Valves and valve actuation

Fluid actuated or retarded

With mechanical movement between actuator and valve

251250, 251229, 2513353, 251281, 137556, 74 182, 74109, F16K 31122, F16K 3154

Patent

active

045975566

ABSTRACT:
An operating mechanism for a rotary valve comprises a rack 18 reciprocatable within a housing 10 by an actuator 20 axially movable from outside the housing through an access aperture 30. The rack engages a pinion 14 connectable with a valve stem 16. A bellows seal 24 surrounds the actuator and is sealed at one end to the rack and at the other end to the housing about the aperture to prevent escape of any noxious fluids which might escape past the valve gland into the operating mechanism housing when sealingly mounted to the valve body.

REFERENCES:
patent: 1264282 (1916-07-01), Dearing
patent: 1360833 (1920-11-01), Vuilleumier
patent: 1478815 (1923-12-01), Blauvelt
patent: 2983479 (1961-05-01), Thomas
patent: 3650506 (1972-03-01), Bruton
patent: 4201366 (1980-05-01), Danko et al.
patent: 4468002 (1984-08-01), Tremblay

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