Ball valve came out in the 1950s, with the rapid development of science and technology, production technology and product structure of continuous improvement, in a short period of 40 years, has rapidly developed into a major valve class. In Western developed countries, the use of ball valves is increasing year by year.
In China, the ball valve is widely used in petroleum refining, long-distance pipeline, chemical, paper, pharmaceutical, water, electricity, municipal, steel and other industries, occupies a pivotal position in the national economy. It has a 90 degree rotation action, the swivel body is a sphere, with a circular through hole or passage through its axis.
The ball valve is mainly used in the pipeline to cut, distribute and change the direction of flow of the media, it only needs to rotate 90 degrees of operation and a small turning torque can be closed tight. Ball valve is most suitable for the switch, cut off the valve to use, V-type ball valve. In addition to the valve should pay attention to the pipeline parameters, should pay special attention to the use of environmental conditions, because the electric valve in the electric device is a mechanical and electrical equipment, its use of its use by the environment greatly affected. Normally, the electric ball valve, butterfly valve in the following environment to pay special attention.