Ball Valve-4 test pressure 454

Ball valve came out in 1950s. With the rapid development of science and technology and the continuous improvement of production technology and product structure, in a short period of 40 years, it has rapidly developed into a major type of valve. In developed western countries, the use of ball valves is increasing year by year.

In China, ball valves are widely used in petroleum refining, long-distance pipeline, chemical industry, paper making, pharmaceutical, water conservancy, power, municipal, iron and steel industries, and play an important role in the national economy. It has the action of rotating 90 degrees, the cock body is a sphere, with a circular through-hole or passage through its axis.