The electric ball valve
evolved from the plug valve. It has the same lifting action by rotating 90 degrees, but the difference is that the cock body is a sphere with a circular through hole or channel passing through its axis. The ratio of the spherical surface to the channel opening should be such that when the ball rotates 90 degrees, all the spherical surfaces should be present at the entrance and exit, thereby cutting off the flow. The electric ball valve can be closed tightly with only a 90-degree rotation and a small torque. The completely equal internal cavity of the valve provides a straight flow channel with little resistance for the medium. It is generally believed that the electric ball valve is most suitable for direct opening and closing, but recent developments have designed the ball valve to throttle and control the flow. The main feature of the electric ball valve is its compact structure, easy operation and maintenance, suitable for general working media such as water, solvent, acid and natural gas, and also suitable for media with harsh working conditions, such as oxygen, hydrogen peroxide, methane and ethylene, etc. . The valve body of the ball valve can be integral or combined. Now, according to the different needs of consumers, electric ball valves have been given more functions and more comprehensive classification. According to different connection methods, electric ball valves are divided into threaded ball valves, PPR ball valves, welded ball valves, flanged ball valves, and aluminum-plastic pipe ball valves. According to the classification of functions, electric ball valves are divided into temperature measuring ball valves and filter ball valves. The classification is diverse and the functions are more complete.
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