Electric quarter-turn valve actuators are electro-mechanical devices that areused to remotely controlquarter-turn valves, such as ball and butterfly valves. Compared to their pneumatic and hydraulic counterparts, electric valve actuators provide a more energy-efficient, clean, and quiet method of valve control.valve, in mechanical engineering,device for controlling the flow of fluids (liquids, gases, slurries) in a pipe or other enclosure. Control is by means of a movable element that opens, shuts, or partially obstructs an opening in a passageway.+ Read More