Home / Markets / WEAVALVES / Products / Valves / Actuators Actuators Actuators come in pneumatic and electric actuators for automating quarter-turn valves. This category contains accessories. Applications include damper control. These actuators have a compact rack-and-pinion design. Dwyer offers double acting and spring return models in a variety of sizes to fit any application. Series ACT Actuators for Valve and Damper AutomationPneumatic and Electric Actuators are available in either pneumatic or electric models. Wide range of torques and voltages means there is an actuator for almost any application. Comes in a variety of sizes to fit an application.