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Fisher™ 3025 Spring Opposed Diaphragm Actuator
Fisher 3025 Actuator
Fisher 3025 diaphragm actuators provide small to medium thrust output for Fisher sliding-stem valves, including the easy-e™, HP, EH, and 461 valves.
The 3025 is capable of long strokes of up to 200 mm (8 in) and includes bias springs to allow for a mechanical fail mode. Direct or reverse-acting operation is also available.
Fisher™ 3025 Spring Opposed Diaphragm Actuator


Spring-return, Linear
Control Type
On/Off, Throttling, Positioning
Operating Temperature
Standard Temperature
Power Source
Process Control
On/Off, Throttling, Positioning
Valve Type
Angle Valve, Globe Valve
Other Configurations
Contact your local Emerson business partner or sales office to learn about additional specifications or options for this product.


  • Maximum thrusts of up to 76.3 kN (17,155 lbf) can be produced, depending on construction.
  • Depending on size, strokes of up to 200 mm (8 in) are available.
  • A side-mounted handwheel is available for manual handwheel control.
  • Fail mode can be easily changed on site, without the need of additional parts.
  • Rugged construction provides stability and corrosion protection.