Clear Pvc Roll,Pvc Clear Plastic Rolls,Transparent Pvc Sheet Roll,Clear Pvc On a Roll,Pvc Transparent Sheet Roll Price SUZHOU OCAN POLYMER MATERIAL CO.,LTD , https://www.ocanplastics.comValve electric device is to achieve the valve is controlled, automatic control and remote control indispensable equipment, the movement process by stroke, torque or axial thrust to control the size. Because the working characteristics and utilization of the valve electric device depend on the type of valve, the working specifications of the device and the position of the valve on the pipeline or the device, the correct selection of the valve electric device prevents overloading (the working torque is higher than the control Torque) is crucial.