Valvcon ESR Failsafe Actuator

Electronic Spring Return Electric Actuator

VALVCON ESR Series Electric Actuator

The VALVCON ESR Series electric actuator provides an internal bank of super-capacitor power storage devices that never need replacement. It’s designed for two-position operation providing 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. The Valvcon ESR-Series is appropriate for applications that require operation from a single pair of wires.



  • Internal energy storage provides power to “safe” position during power-outages.
  • Field-settable for “fail clockwise” or “fail counter-clock-wise”.
  • True “two-wire” control.
  • Patented technology provides back-up capabilitities within the standard size actuator enclosures!
  • Dual conduit openings making wiring easier, and keep power and control wiring separate.
  • Two year warranty

Internal Back-up

The Valvecon ESR Series electric actuator is equipped with internal back-up power, allowing you to shut down your system in the event of an external power loss. The electronic back-up powered feature incorporates a rechargeable storage module on a plug-in, modular PC board under the actuator cover. Upon power loss, the storage module is automatically activated as the main power supply to drive the actuator to the “fail” position. No hard-wiring or other complex operations are required.

Enclosure Diagram


Wiring Diagram for 115 and 230 VAC


Ordering Information

The following Ordering Reference Table shows an example of ordering a VALVCON ESR Series electric actuator with weathertight & explosionproof (NEMA 4/4x/7 &9), 600 in lbs torque, with options (ISO 5211 output, brake, two auxiliary limit switches and heater/thermostat), and 115VAC.

Ordering Reference Tables


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Call Now! 800.962.5964At Automated Valve & Equipment Co., we deliver on our commitments and strive to exceed our customers’ expectations. We invite you to contact us to explore ways in which our unique capabilities can be an asset to your facility.

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