1.The fluid resistance is small. The resistance coefficient is equal to that of the pipe of the same length.
2. Simple structure, small size, light weight.
3. Tight and reliable. Plastics are widely used in sealing materials of ball valves. They have good sealing performance and are also widely used in vacuum system.
4. Easy operation, quick opening and closing. From full opening to full closing, there only needs to be a 90 degrees rotation, which is easy for remote control.
5. Easy maintenance. Ball valves have simple structures, and the seals are usually active, which is convenient for removal and replacing.
6. When fully open or fully closed, the sealing of the ball and valve seat is isolated from the medium. When the medium flows through, there’ll be no corrosion of the sealing surface of the valve.
7. Wide range of application. The diameter can be as small as a few millimeters, or can be as large as a few meters. From high vacuum to high pressure, it can both be applied. When the ball rotates 90 degrees, spheres should be present at both the inlet and outlet, therefore cutting off the flow.

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