The portfolio of modular electric actuators from Auma has now been extended to include an SQ.2 part-turn range for butterfly and ball valve automation. Scheduled for launch in 2013, the actuators will replace the company’s SG.1 range.

A new actuator size included in the SQ.2 series more than doubles the torque range previously offered by the SG.1 – the range now covers 50Nm to 2,400Nm.

Other developments include the introduction of an SQR version for modulating duty which replaces the SGR. The SQR provides improved control characteristics with enhanced positioning accuracy and an increased number of permissible starts per hour.

Commissioning and operation of SQ actuators are identical to the SA.2 multi-turn type range. This includes the same control concept: both ranges are without integral controls and are available with simple AM or micro-controller controlled AC. As a result, controls are interchangeable, which means, at plants where both product series are installed, on-site device management is simplified.

Auma’s two-component powder coating has been incorporated into the SQ.2 design  to help improve corrosion protection. The enclosure protection of the devices meets  IP 68 – basic standard.