該系列是一種大輸出力、高性能的氣動活塞式執行機構，分為雙動作型和單動作型兩種。與角行程調節閥組合使用，可用于調節和開關的場合，也可用于其它回轉運動的場合。
該系列采用撥叉機構與導向桿組合的結構設計，使輸出扭矩更穩定。底部與閥門連接法蘭的尺寸符合 ISO 5211 標準。頂部輸出軸符合 NAMUR 標準，便于安裝限位開關，定位器等附件。
This Series provides double-acting and spring return pneu-matic cylinder actuators characterized by large output 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.
The design of this serie's actuators combines both scotch yoke mechanism and guide rod, which helps the output torque to become more stable. The bottom flange which connects the actuator and the valve body fully meets the standard of ISO 5211. The top output shaft can fully meet the requirements of NAMUR and it's also convenient for the installation of accessories such as limit switch, positioner, etc.
