What is ball valve?

Introduction of ball valve

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

In our country, ball valves are widely used in petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmaceuticals, water conservancy, electric power, municipal administration, steel and other industries, and occupy a pivotal position in the national economy. It has the action of rotating 90 degrees, and the cock body is a sphere with a circular through hole or channel passing through its axis.

The ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. It only needs to rotate 90 degrees and a small torque can be closed tightly. The ball valve is most suitable for use as a switch and shut-off valve, V-shaped ball valve. In addition to paying attention to the pipeline parameters, electric valves should also pay special attention to the environmental conditions in which they are used. Since the electric device in the electric valve is an electromechanical device, its use status is greatly affected by its use environment. Under normal conditions, special attention should be paid to the use of electric ball valves and butterfly valves in the following environments.

The features of ball valve

1. Wear-resistant.

Since the valve core of the hard-sealed ball valve is spray welded with alloy steel, and the sealing ring is welded with alloy steel, the hard-sealed ball valve will not produce too much wear when it is switched on and off. (Its hardness coefficient is 65-70)

2. Good sealing performance.

Since the sealing of the hard-seal ball valve is manually ground, it cannot be used until the valve core and the sealing ring are completely matched. Therefore, its sealing performance is reliable.

Third, the switch is light.

Since the bottom of the sealing ring of the hard-sealed ball valve adopts a spring to make the sealing ring and the valve core tightly hug together, the switch is very light when the external force exceeds the pre-tightening force of the spring.

4. Long service life.

It has been widely used in petroleum, chemical, power generation, papermaking, atomic energy, aviation, rockets and other sectors, as well as in people's daily life.