Ball valve came out in the 50s of the 20th century, with the rapid development of science and technology, the continuous improvement of production technology and product structure, in just 40 years, has rapidly developed into a major valve.
In the industrially developed countries of the West, the use of ball valves is increasing year by year. In China, ball valves are widely used in petroleum refining, long-distance pipelines, chemicals, papermaking, pharmaceuticals, water conservancy, electric power, municipal, steel and other industries, and occupy a pivotal position in the national economy.
It has a motion of 90 degrees of rotation, and the body is a sphere, with circular through-holes or channels through its axis. The ball valve is mainly used in the pipeline to cut off, distribute and change the flow direction of the medium, it only needs to rotate 90 degrees and a small torque to close tightly. Ball valves are most suitable for on/off valves, V-type ball valves. In addition to the parameters of the pipeline, special attention should be paid to the environmental conditions of its use, because the electric device in the electric valve is an electromechanical equipment, and its use state is greatly affected by its use environment.
