The ball valve was introduced in the 1950s.
sanitary ball valvesanitary ball valve

With the rapid development of science and technology, continuous improvement of production technology and product structure, it has rapidly developed into a major valve category in just 40 years. In countries with developed industries in 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, chemical, paper, pharmaceutical, water conservancy, electric power, municipal, steel and other industries, occupying a pivotal position in the national economy. It has a 90 degree rotation and the cock 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 flow direction of the medium. It only needs to be rotated 90 degrees and the torque can be closed tightly. Ball valves are most suitable for use as switches and shut-off valves, V-type ball valves. In addition to paying attention to the pipeline parameters, electric valves should pay special attention to the environmental conditions used. Since the electric device in the electric valve is an electromechanical device, its use state is greatly affected by its use environment. Under normal conditions, electric ball valves and butterfly valves should be used with special attention in the following environments.

sanitary ball valvessanitary ball valves
Functional classification
1. Bypass valve: The ball valve is generally opened by static water, so the bypass valve is first pressed, that is, both sides are filled with water;
2, air valve: when filling the water, remove the air to take the float to close the valve; when draining, add air, the float will drop by itself;
3. Pressure relief valve: When opening and closing the valve, the pressure water between the valve and the sealing cover is excluded to avoid wearing the sealing cover;
4. Drainage valve: discharges the sewage in the lower part of the ball housing.
Transmission classification
1, pneumatic ball valve
2, electric ball valve
3, hydraulic ball valve
4, gas-liquid ball valve
5, electro-hydraulic ball valve
6, turbine drive ball valve