| AVF 124: Valve drive with spring return
How energy efficiency is improved
Electric cut-off to save energy
Areas of application
Actuation of through and three-way valves in the VUN/BUN, VUD/BUD and VUE/BUE, DN15 to DN50 series. For controllers with a switching output (3-point control).
Features
- Actuator with spring return action and pushing force of 500 N
- The return spring moves the actuator back to a pre-determined end position in the event of a power failure or the power being switched off or whenever a limiter is activated
- Two versions; NC closes the valve, NO opens the valve if the spring is activated
- Stepping motor with electronic control unit and electronic load-dependent cut-off
- Maintenance-free gearbox and holding magnet
- LED display
- Coding switch for changing over running time (60, 120 s)
Technical description
- 230 V power supply
- Two-part housing made of self-extinguishing plastic, lower section black, cover transparent
- Body of gearbox and mounting bracket for fitting valve made of cast zinc
- Electrical connections (max. 1.5 mm²) with screw terminals
- Cable entry M20 × 1.5
- Installation position: vertical to horizontal, but not upside down
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