Electric actuators

What is an Electric Actuator?

Shut-off and regulating valves can be equipped with an actuator, allowing the valve to be controlled from a location other than in its immediate vicinity. Whereas pneumatic actuators use compressed air to operate, electric actuators use electricity.

In large actuators, short-circuit motors (synchronous motor) have traditionally been used, in which the valve is directed in the desired direction by changing the polarity of the rotor windings with alternating current. Actuators are supplied only for a specific voltage and frequency.

Brushless DC motors (BLDC) have become common in smaller actuators, enabling the use of 24 VDC as well as providing flexibility with AC voltages. For example, as standard, the ARI-Premio-Plus actuator operates within a voltage range of 90–264 VAC, 47–63 Hz.

The advantage of electric actuators is their significantly greater force output relative to their size compared to pneumatic actuators. Therefore, they are well suited for large, high-force valves such as wedge gate valves.

Selection of an Electric Actuator

We assist in selecting an electric actuator that meets the requirements of your application.

Our product portfolio includes ARI PREMIO electric linear actuators, whose power capacity is designed in a sensible and cost-effective manner for ARI shut-off and control valves. We also offer other electric actuators available on the market, such as AUMA, Bernard, and Rotork.

In our recorded webinar, we presented ARI-Armaturen’s PREMIO-PLUS 2G actuator.

Contact our representatives for more information about electric actuators.