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Fisher™ 1078 Declutchable Manual Actuator
Fisher 1078 manual actuators are declutchable actuators for manual operation of control valves and equipment that use power actuators.
The dimensions of these shafts are the same as those used with H mounting adaptations. The stub shaft fits into a square broach in the manual actuator sector and spacers secure the shaft in the appropriate position
Fisher™ 1078 Declutchable Manual Actuator


Rotary, Manual
Control Type
On/Off, Positioning, Positioning
Power Source
Valve Type
Ball Valve, Butterfly Valve, Eccentric Plug Valve, Triple Offset Valve
Other Configurations
Contact your local Emerson business partner or sales office to learn about additional specifications or options for this product.


  • Direct mounting to the actuator housing simplifies installation and eliminates the need for yokes and other brackets.
  • A lever-operated eccentric bearing support on the input shaft allows engagement of the worm gear with the sector at any point of rotation. Because the travel indicator components are mounted on a through shaft, accurate travel indication is maintaine
  • The disengagement lever is locked in both the engaged and disengaged positions by a detent mechanism, which must be released before the lever can be moved. This provision reduces the possibility of inadvertent or accidental operation. In addition, stop&#