Actuator for a rotary valve

Details Actuator for a rotary valve Actuator for a rotary valve

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 31/44 (2006.01) F16K 31/528 (2006.01) F16K 41/10 (2006.01)

Patent

CA 2083206

A hermetically-sealed actuator for a rotary valve is provided in which a valve operator is operative to move a stem axially, axial movement of the stem, in turn, producing rotation of a rotary cam member that is operatively connected to rotate a valve spindle, the axially movable stem being hermetically sealed by a bellows mechanism, thus hermetically isolating the rotary cam member from the valve operator, the maximum angular extent of rotation of the cam member being determined by the ramp cam angle and angular extent of helical slots formed in the rotary cam member and which are engaged by trunnions fast with the stem.

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