Torque transmitting assembly for rotary valve member

Details Torque transmitting assembly for rotary valve member Torque transmitting assembly for rotary valve member

F - Mech Eng,Light,Heat,Weapons

16

K

251/98

F16K 51/00 (2006.01) F16K 1/22 (2006.01) F16K 31/04 (2006.01) F16K 31/06 (2006.01) F16K 37/00 (2006.01) H02K 49/10 (2006.01)

Patent

CA 1092589

ABSTRACT OF THE DISCLOSURE A torque transmitting assembly for effecting rotation of a valve member such as a butterfly valve is hermetically sealed to the valve housing. It includes a rotor member having a plurality of circumferentially spaced permanent magents of opposite polarity and a driver magnet assembly having a like plurality of circum- ferentially spaced permanent magnets of opposite polarity facing the magnets mounted to the rotor. The two sets of magnets are separated by a stainless steel separator which hermetically seals the rotor. The driver magnet assembly is rotatable about the separator so that magnetic coupling forces effect a following rotation of the rotor and hence of the valve member. A magnetic indicator may be used to identify the rotational position of the rotor. The entire assembly is hermetically sealed and no packing is required. The assembly is especially useful to control a valve in a hazardous environment wherein no leakage of the fluid being controlled by the valve member is permissible.

316610

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