Ball valve was invented in the 1950s, with the rapid development of science and technology, production technology and product structure of continuous improvement in a short span of 40 years, has rapidly developed into a major valve class.
In the Western industrial developed countries, the use of ball valve is increasing year in, in China, the ball valve is widely used in petroleum refining, long-distance pipeline, chemical, papermaking, pharmaceutical, Water conservancy, electricity, municipal, steel and other industries, in the national economy occupies a pivotal position.
Ball valve It has a rotation of 90 degrees of action, the plug body is a sphere, there is a circular through hole or channel through its axis. Ball valve in the pipeline is mainly used to cut, distribute and change the flow direction of the media, it only needs to rotate 90 degrees of operation and very small rotational torque can be closed tight.
Ball valves are most suitable for switching, shut-off valve use, but the recent development of the ball valve has been designed to make it with throttling and control flow, such as V-type ball valve.
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