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Part-Turn Actuators

In compliance with ISO 5211, part-turn actuators transmit torque to the valve for a rotation of one revolution or less. They do not have to be capable of withstanding axial thrust. Part-turn valves – such as butterfly valves and ball valves – are often designed in multi-turn versions. SQ part-turn actuators are equipped with internal end stops to allow precise approaching of end positions during handwheel Operation.


FQM and FQMEx fail safe unit part-turn actuators
  • With their new FQM fail safe unit, AUMA offers innovative and safe actuator solutions for automatic operation of valves in case of emergencies making use of stored mechanical energy.

  • Constant torque curve with torques from 150 Nm to 1,200°Nm.

  • The spring is not operated during standard operation. Thanks to the overriding gear arrangement, the constant force spring is disengaged during normal operation and does not need to be operated.

  • The end position switches are automatically set during the setting procedure of end positions OPEN and CLOSED and do not require separate adjustment.

Actuators SQ and SQR part-turn actuators
  • Actuators of the SQ type range for open-close duty and positioning duty are rated for class A and B or types of duty S2 – 15 min.

  • The modulating actuators of the SQR range are rated for class C or types of duty S4 - 25%.

  • Actuators of type range SQ/SQR can be combined with various controls from simple OPEN-CLOSE control to the micro-controlled version with logging of operating data or fieldbus interface.

Variable operating time actuators SQV and SQRV part-turn actuators
  • With SQV.2 part-turn actuators for open-close duty and SQRV.2 for modulating duty paired with ACV.2 actuator controls, the proven AUMA SQ/SQR range is enhanced by variable operating time models. AUMA is spearheading market technology, offering a wide operating time range with a ratio of up to 1:10

  • Actuators of the SQV type range are rated for open-close duty and positioning duty (classes A and B) / (short-time duty S2 – 15 min).

  • Actuators of the SQRV type range are rated for modulating duty (class C) S4 – 25 %.


PROFOX PF-Q part-turn auma actuator
  • Compact actuators offer solutions for butterfly, globe, ball and plug valves through their tailored autmation solutions. 

  • Each PROFOX is equipped with a centrally located LED: The FOX-EYE. It provides clearly visible information about both actuator and valve status. The FOX-EYE display scheme can be configured by the user as required.

SGC and SGCR part-turn auma actuators
  • The "small" electric part-turn actuator range with integral controls. All parameters are directly set at the actuator. The controls contain switchgears, power supply unit, interface to the DCS. The component automatically switches the actuator off, once the valve end position is reached, motor overheating is detected or a torque overload has occurred.

  • SGC actuators are rated for class A and B or types of duty S2 - 15 min

  • SGCR actuators are rated for class C or types of duty S4 - 40%.

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