The two-piece ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline.

 It has the following advantages:

1. The fluid resistance is small, and its resistance coefficient is equal to that of a pipe section of the same length.

2. It has simple structure, small size and light weight.

3. Tight and reliable, the current ball valve sealing surface material widely uses plastic, 

which has good sealing performance and has also been widely used in vacuum systems.

4． It is easy to operate and opens and closes quickly. It only needs to be rotated 90° from fully open to fully closed, 

which is convenient for long-distance control.

5. It is easy to maintain. The ball valve has a simple structure and the sealing ring is generally movable,

 making it easy to disassemble and replace.

6. When fully open or fully closed, the sealing surfaces of the ball and valve seat are isolated from the medium. 

When the medium passes, it will not cause erosion of the valve sealing surface.