Light weight and compact design：Employment of die-cast aluminum into main components and unique body shapes achieves the lightweight and compact design.; Oilless operation：High-quality lubrication-free materials are used as piston sliding packing and sliding　materials for bearing to maintain the high reliability in the non-lubrication operation.; Spring cartridge：This system makes it possible to change the operation from single-acting type to double-acting type and vice versa.　The single-acting type is structured to obtain the same output torque as that of the double-acting type in the air operation mode. (Patented)

Scotch yoke driving system; Abundant optional devices; Connection method

Solenoid valves mouting interface and optional actuator top mounting interface comply with NAMUR standards (VDI/VDE3845); Scotch yoke/double piston mechanism is adopted for compact design.; Scotch yoke mechanism features improved driving efficiency allowing compact design, while providing optimum torque characteristics for controlling valves hich require maximum torque output at the start/stop ends of rotation.; TA3 series and its options can be operated without lubrication.; Single-acting（spring return）type incorporates spring cartridge.