1. The fluid resistance is small, and the resistance coefficient is the same as that of the same length.
2. Simple structure, small size and light weight.
3. Close and reliable, good sealing, and widely used in vacuum system.
4. Easy to operate, open and close quickly, from open to close just rotate 90 °, is advantageous for the remote control.
5. Easy to maintain, simple structure of ball valve, the sealing ring is generally active, it is convenient to remove and replace.
6. The sealing surface of the ball and seat shall be separated from the media when full or closed, without causing erosion of the sealing surface of the valve.
7. Wide range of applications, ranging from small to several millimeters, large to several meters, from high vacuum to high pressure can be applied.