... Series SZ Actuators are smaller in size, more economical in structure design, more reliable, and easier to install. 1 GENERAL DESCRIPTIONSeries ... Operating Valve Actuators are smaller in size, more economical in structure design, more reliable, and easier to install. Its total ... into tow modes: Torque Mode and Thrust Mode.2DRIVE STRUCTURE AND PARTS NAME MAIN TECHNICAL PARAMETERS TypeItemSZ40(T)SZ75( ...