1. The resistance coefficient of the fluid is smaller than that of the pipe segment of the same length.
2. Simple structure, small size, light weight.
3. Close and reliable, the current ball valve sealing surface materials widely used plastic, good sealing, in the vacuum system has been widely used.
4. Easy to operate, open and close quickly, from full open to all closed as long as the rotation of 90 °, easy to control the distance.
5. Easy maintenance, ball valve structure is simple, sealing ring is generally active, disassembly and replacement are more convenient.
6. When fully or completely closed, the ball and valve seat sealing surface and media isolation, media through, will not cause valve seal surface erosion.
7. Wide range of applications, diameter from small to several millimeters, large to several meters, from high vacuum to high pressure can be applied.