Cast steel ball valve came out in the 1950s. With the rapid development of science and technology, the continuous improvement of production technology and product structure, it has rapidly developed into a major valve category in a short period of 40 years. In the developed countries of western industry, the use of ball valve is increasing year by year. In China, ball valve is widely used in petroleum refining, long-distance pipeline, chemical industry, papermaking, pharmaceutical industry, water conservancy, electric power, municipal administration, steel and other industries, and plays an important role in the national economy.
Online Inquirybrief introduction
Cast steel ball valve came out in the 1950s. With the rapid development of science and technology, the continuous improvement of production technology and product structure, it has rapidly developed into a major valve category in a short period of 40 years. In the developed countries of western industry, the use of ball valve is increasing year by year. In China, ball valve is widely used in petroleum refining, long-distance pipeline, chemical industry, papermaking, pharmaceutical industry, water conservancy, electric power, municipal administration, steel and other industries, and plays an important role in the national economy.
The ball valve can be closed tightly only with 90 degree rotation operation and small rotation torque. The completely equal inner cavity of the valve body provides a small resistance and straight passage for the medium. It is generally believed that the ball valve is the most suitable for opening and closing directly, but in recent development, the ball valve has been designed to throttle and control the flow. The main features of ball valve are compact structure, easy operation and maintenance, suitable for general working media such as water, solvent, acid and natural gas, and also suitable for media with poor working conditions, such as oxygen, hydrogen peroxide, methane and ethylene. The ball valve body can be integral or combined
Working principle
The working principle of cast steel ball valve is to make the valve unblocked or blocked by rotating the valve. The ball valve has the advantages of light switch, small volume, large caliber, reliable sealing, simple structure and convenient maintenance. The sealing surface and spherical surface are often in closed state and are not easy to be eroded by medium, so it is widely used in various industries.
Ball valve and plug valve belong to the same type of valve, only its closing part is a ball, and the ball rotates around the center line of the valve body to open and close a valve.