Electric drive valve is a valve commonly driven approach, often call this form of drive means driving means for the valve actuators, valve actuators characteristics are as follows: 1) open and close rapidly, can greatly reduce the time required to open and close the valve; 2) can greatly reduce the labor intensity of Guangzhou Kaiheng Valve Co., Ltd., is especially suitable for high pressure, large diameter valve; 3) suitable for installation in can not be manually operated or inaccessible location Shanghai Guanlong valve Machinery Co., Ltd., is easy to implement remotely operated, and the installation height is unlimited; 4) in favor of the automation of the entire system; 5) Power than air and liquid source readily available, its cable laying and maintenance is much simpler than compressed air and hydraulic lines. Pneumatic valves and hydraulic pressure based on a certain air, water or oil as the power source, an air cylinder (or cylinders) and the movement of the piston to drive the valve, the air pressure is typically less than 0.8MPa pneumatic valve, the hydraulic pressure or the oil pressure is 2.5MPa ~ 25MPa. As for driving the diaphragm; rotary gas, liquid drive means for driving the ball, butterfly or plug. The driving force of hydraulic devices, suitable for driving large diameter valves. Such as for driving plug, ball and butterfly valves must be reciprocation conversion surface of the piston rotary motion. In addition to the use of an air cylinder or a hydraulic cylinder piston to drive outside Shanghai and Shanghai Valve Manufacturing Co., Ltd., as well as the use of pneumatic diaphragm-driven, and the driving force is small because of the trip, it is mainly used to adjust the valve. Shanghai and Shanghai Valve Manufacturing Co., Ltd., Zhuhai valve, the valve provided by the Dongguan Ming Kong, the Hong Kong Science and Technology Co., Ltd. valve. Valve Co., Ltd., Dongguan Ming Kong (www.gdmgfm.com) strong, credible, butterfly and other industries in Dongguan, Guangdong has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead valve and you work out of Hong Kong into the brilliant, for a better future!