Linear electric actuators AVF234S and AVM234S

The AVM234S / AVF234S valve actuators offer automatic adaptation to the stroke of the valve, precision activation and high energy efficiency with minimal operating noise. 

Ideal for use with any DSH series direct steam injection humidifier and in TDS (Total Dissolved Solids) control systems VCP blowdown valves.

In case of power failure/interruption, the AVF234S actuator runs, spring driven, into its respective fail-safe position (thrust rod extended). In modulating duty, the end position seating is made via limit switches.

  • IP 66 protection.
  • Automatic detection of control signal with LED indications.
  • Adjustable characteristic curve (linear, quadratic and equal-percentage) and running time via DIP switch.
  • Automatic adaptation to valve stroke.
  • Manual operation with disengagement of the actuator motor.
  • Mechanical stroke indication.
  • Spring-return feature (AVF234S).
  • Switching input (2-point or 3-point-step control) or analog input (0...10 V or 4...20 mA).
  • Split-range unit for adjusting sequences. 
  • 230 V AC and 100 V AC power supply modules.
  • Auxiliary change over contacts.
  • Potentiometers, e.g. for 3-point-step in closed loop.
  • Adapters for high temperature conditions.

Actuation of V series ADCATrol control valves, or others on request.

AVM234S.

AVF234S - Fail-safe with spring-return.