Fisher® M Series
Fisher® M Series handwheel gear actuators are totally enclosed, weatherproof, worm gear actuators for reliable manual operation with Fisher A11, A31A and A41 High Performance Butterfly Valves. The M actuator consists of a body housing, cover, worm gear, input shaft, and handwheel. The housing is grease packed.
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- Long Service Life—Rugged construction provides stability and corrosion resistance. The unit is totally enclosed for weatherproof operation.
- Accurate Valve Disc Positioning—Two adjustable stops are located in the housing for correct adjustment of disc position. The actuator is inherently self-locking, unless subjected to high vibration.
- Overtravel Capability—Provides for five degrees of overtravel in both directions for precise positioning of the valve disc.
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