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The AW series pneumatic actuators are divided into double acting and single acting (spring return), with two separate cylinders and a huge output torque, providing flexible and smooth operation; The piston rod is plated with a hard grid, which has good wear resistance; All sliding components are equipped with non lubricated shafts and guide rings for quality inspection to reduce friction coefficient and extend service life. The U-shaped curve characteristic output torque of AW pneumatic actuators is more suitable for the opening, closing, and adjustment of angle stroke valves such as large-diameter ball valves and butterfly valves.