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Ball valves and butterfly valves are commonly used in comparison. Some cases can be universal, and some conditions are only one of them. The difference between the two lies primarily in the construction and switching principle. High pressure valve manufacturers give a brief analysis:

First, ball valve: the plug valve evolved, the opening and closing parts are spheres.

The characteristics are:

1. The fluid resistance is small, and the full-diameter ball valve has no flow resistance.

2. Simple structure, small volume, light weight.

3. Tight and secure. It has two sealing surfaces, and now the sealing surface of the ball valve is widely used in various plastics, and the sealing property is good. It has also been widely used in vacuum systems.

4. Easy to operate, open and close fast, from full open to full close as long as the rotation of 90 degrees, easy to remote control.

5. Easy to repair, ball valve structure is simple, sealing ring is usually active, disassembly and replacement are relatively convenient.

6. When fully open or fully closed, the sealing surface of the ball and the seat is isolated from the medium, and the medium will not cause corrosion of the valve sealing surface when it passes.

Seven. Wide application scale, small diameter to a few millimeters, large to a few meters, from high vacuum to high pressure can be used.

8. Because the ball valve has a scrubbing property during opening and closing, it can be used in media with suspended solid particles.

Second, butterfly valve: the opening and closing parts are disc type mercy open,

The characteristics are:

1, simple structure, small size, convenient device;

2. Small flow resistance coefficient, quick opening and closing;

3, can be used for large diameter valves;

4, can use different sealing surface, use a variety of environments, including powder, granular media;

5, open and close convenient agile, labor-saving, fluid resistance is small, can often operate.

6. It can transport mud and accumulate liquid at the pipe entrance.

7, under low pressure, can complete outstanding sealing.

8, good conditioning performance.

Third, Summary

Compared with the ball valve, the tightness of the butterfly valve is slightly worse, but in the large-diameter valve, the butterfly valve has unique advantages than the ball valve; When used for regulating flow, the butterfly valve conditioning scale is not large, and the V-type conditioning ball valve is accurate. In addition, in high pressure pipelines, ball valves have advantages over butterfly valves.

Founded in 1982, Nuclear Valve Technology (Fujian) Group Co., Ltd. is committed to providing high quality, high value-added valves and related fluid control products and services for the energy industry. After more than 20 years of innovative management, it has developed into one of the largest production and marketing enterprises in the valve industry with 8 professional companies, 15 shareholding enterprises and more than 50 professional cooperative factories.