Z10-24B DZB10 Z20-24B DZB20 Z30-24B DZB30 Z45-24B DZB45 Z60-24B DZBW60 Z90-24B DZB90 Z120-24B DZB120 Z180-18B DZB180 Z250-24B DZWB50 DZB350 DZB350 Z500-18B DZB500 electric rotary head 1. The apparatus dustproof, waterproof, anti-light corrosion, the protection class IP55, IP65 (special order); 2. The torque control mechanism and reliability, easy adjustment, high torque repeatability; 3. stroke control mechanism adjusts the high accuracy and repeatability , opening and closing to be fitted to each of 2-4 micro switch; 4. Using semi-automatic hand - electric switching mechanism, institutional simple, reliable, easy operation; 5. With valve actuators with three-phase asynchronous motors, starting torque, small moment of inertia; 6. equipped with a mechanical valve position indicator. 1. Ambient temperature: -20 ℃ ~ + 60 ℃; 2. Relative Humidity: 95% (25 ℃ when); 3. Working environment: non-flammable, explosive and highly corrosive media; 4. protection: IP55 , IP65 (special orders power supply: 380V 50HZ 50HZ (special requirements can be made when ordering