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Fisher™ 1B Pump Governor Actuator
Fisher 1B Actuator
The Fisher 1B pump governor actuator is used to maintain a constant discharge pressure on steam-driven turbine or reciprocating pumps and for pressure reducing or pressure relief applications.
Typical pump governor applications include fire pumps, boiler feedwater pumps, and industrial or refining pumps where the discharge medium is oil, steam, air, or other non-corrosive fluid. The 1BR type pump governor actuator is combined with a push-down-to-open valve for service as a relief governor.
Fisher™ 1B Pump Governor Actuator


Control Type
Operating Temperature
Standard Temperature
Power Source
Process Control
Positioning, Positioning
Valve Type
Globe Valve
Other Configurations
Contact your local Emerson business partner or sales office to learn about additional specifications or options for this product.


  • Brass and steel construction combats wear for long service life.
  • Few moving parts and easy access reduce maintenance and downtime.
  • Readily accessible spring adjustment without removing any parts.
  • Leak-free piston cups available to 66°C (150°F).
  • Direct-operated configuration provides fast speed of response.