ESR-Series electronic spring-return electric actuator

Electronic spring-return drives to fail position upon loss of power

The VALVCON ESR-Series electric actuator provides an internal bank of super-capacitor power storage devices that never need replacement. Designed for two-position operation, it provides true two-wire control: When the actuator is energized it drives to one position; when de-energized the actuator powers itself to the other position.


Long-term reliability

No maintenance required

Low cost of ownership

Easy installation and set up


  • Compact and lightweight
  • Internal energy storage provides power to “safe” position during power outages
  • Field-settable to “fail-clockwise” or “fail-counterclockwise”
  • High standard duty cycle
  • True “two-wire”operation
  • Internal capacitors are rated for a minimum of 100,000 cycles

Common use cases

  • Two-wire applications
  • On/Off service
  • Fail “safe” applications

Applicable industries

  • Water/Wastewater
  • HVAC



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