Pneumatic actuators for quarter-turn valves and dampers

Mike Edwards   

Products A-T Controls valves

The Triac heavy duty scotch yoke actuator product line offers a broad range of torques to 1,600,000 in-lbs. The THD series available from A-T Controls is designed to operate ball, butterfly, plug valves, dampers or any device that requires a quarter-turn movement for on-off or throttling service.

The standard offering of the THD series is the symmetrical design yoke said to deliver maximum torque at both ends of the 90° cycle.

The square slide bearing with guide bar is also said to provide high cycle life and smooth stroke while minimizing wear points. The company also offers a canted yoke design which is suitable for butterfly valves in sizes C11 and larger.

As with all Triac actuators, the series is accompanied by a line of accessories, including jackscrew and hydraulic overrides, limit switches, solenoids, and positioners.

In addition, the company offers mounting hardware to integrate its actuators with any quarter-turn valve, damper, or louver.

Print this page


Stories continue below