Scotch Yoke pneumatic actuators are essential mechanical devices used for automating and operating quarter-turn valves such as butterfly, ball, and plug valves in various industries. Available in two constructions—spring return and double acting—these actuators efficiently convert linear motion into rotational motion. This conversion is achieved through a mechanism where the linear motion of a sliding bar, coupled to a piston, interacts with a yoke featuring a slot that engages a sliding block. When force is applied to the piston, the sliding block moves within the yoke slot, causing the yoke to rotate and thereby open or close the valve or damper.
