该系列是一种外形小、高性能的执行机构，分为双动作和单动作两种，与角行程调节阀组合，可用于调节和开关的场合。该系列也可用于其它回转装置的场合。

This Series provides double-acting and spring return pneumatic torque cylinder actuators characterized by small size and high-performance. Combined with rotary stem motion type control valves, the actuators of this Series are suited for modulating and on-off services. Uses with other rotary motion devices are also good.