Linear electric actuators EL (1,2 kN to 25 kN)

The EL series linear electric actuators are designed for operation of control valves in modulating and on/off services in process engineering and industrial applications. The self-locking stem nut is driven by an electric motor via a gearing. 

Load-dependent switches and/or mechanical limit switches define the stops for the end positions. 

  • Modular retrofittable design. 
  • 24 V AC, 115 V AC, 230 V AC, 400 V AC 50/60 Hz and 24 V DC supply voltages. 
  • Manual operation with disengagement of the actuator motor. 
  • IP 65 (EL12 IP 43) protection.
  • Valve protection against excessive force due to load-dependent seating. 
  • Mounting to valves made via yoke or mounting flange DIN 3358, enabling easy connection to all types of valves. Standard version is suitable for ADCATrol valves. 
  • Defined closing force in the end positions leading to tight valve shut-off. 
  • Stall proof synchronous motors (or brake motors for higher positioning forces) ensure highest positioning accuracy. 
  • Mechanical stroke indication via anti-rotation bar. 
  • Exact, backlash-free measurement of actual valve stroke by direct coupling to the valve stem. 
  • Universally usable actuators due to control via 3-point-step controllers, analogue input signals (0 to 10 V, 0(4) to 20 mA), or fieldbus systems. 
  • Limit switches are easily adjustable for stroke limitation or as signal for intermediate positions. 
  • Electronic positioner. 
  • Additional limit switches. 
  • Potentiometers e.g. for 3-point-step control in closed loop. 
  • 0(4) to 20 mA electronic position feedback units. 
  • Heating resistor. 
  • Special coatings and finishes for aggressive environments. 

Actuation of ADCATrol control valves, or others on request.

EL12, EL20, EL45, EL80, EL120 and EL250.