To create best combination of actuator and valves ［操作原理和旋转方向） Operating principles and rotation direction ［双作用输出扭矩� Output Torque of Double Acting Actuator ，可J`2 ,H 单作用的操作原理（标准转向）俯视 B口进气 ， A口失气 ， 推动两活塞分开 ， 向两端移动 ， 输出轴逆时针方向转动。 失气或失电时， 弹簧使活塞合拢 ， 空气从2口排出 ， 从而获得顺时针方向旋转。 Air inlet in port B and air loss in port A will push the two pistons apart and makes them move towards two ends. The output shan will rotate in counterclockwise direction Air loss in port B will push the two pistons folding and makes them move towards the center. The output shaft will rotate in clockwise direction Drawing of output...