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Fisher™ 1051 Rotary Actuators (Obsolete)
Fisher 1051 rotary actuators
This product is now obsolete.
Relevant documents are listed below. Contact your local Emerson sales office for more information.
Fisher™ 1051 Rotary Actuators (Obsolete)


Spring-return, Quarter-turn, Rotary
Control Type
On/Off, Throttling
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.


  • Available with fail-open or fail-close construction and can be mounted in any of four actuator/valve mounting positions. These actuators can be mounted on a broad range of Fisher valves or used with other equipment.
  • Single joint linkage with splined and clamped lever minimizes lost motion and improves control accuracy.
  • Rugged construction provides stability, corrosion resistance, and protection from deformation should over-pressurization occur.
  • Includes an externally accessible spring adjuster to relieve spring compression. Actuator/valve linkage is completely enclosed, yet the valve packing adjustment remains accessible without removing any parts.