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Fisher™ 2052 Spring-and-Diaphragm Rotary Actuator
The Fisher 2052 highly versatile and compact actuator design can assist in throttling or on/off applications.
Install on any valve, even in space-limiting conditions.
Fisher™ 2052 Spring-and-Diaphragm Rotary Actuator


Spring-return, Quarter-turn, Rotary
PED, CUTR, ATEX, SIL capable
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.


  • The compact design reduces valve/actuator envelope dimensions leading to greater mounting versatility for both skids and process plants.
  • Allows linkage-less feedback, via a contact-less magnetic array.
  • The clamping of the lever onto a splined valve shaft, coupled with the single pivot linkage, reduces lost motion between the actuator and the valve.
  • The nested spring design requires no bench set.
  • The actuator can be mounted directly onto non-spline shafts, which allows mounting on a wider range of valves.
  • Ability to adjust or change the travel range by 30 degrees in either direction without removing the actuator or the addition of extra parts.
  • All parts in the fail-safe mechanism (made of steel, cast iron, and ductile iron) ensure the actuator will maintain safety integrity in the event of a fire.
  • The actuator/valve assembly action can be converted from push-down-to-open to push-down-to-close, or vice-versa, without additional parts.