The development of high-temperature pneumatic ball valve focuses on the following aspects: improving the temperature limit of pneumatic ball valve; Increase the pressure limit of pneumatic ball valve; Make the pneumatic ball valve have good throttling performance; Make the pneumatic ball valve have good corrosion resistance to solid particles, cavitation and blowout; The pneumatic ball valve has excellent cut-off capacity.

2、 Structure characteristics of internal thread pneumatic ball valve
1. The fluid resistance is small, and its resistance coefficient is equal to that of pipe sections with the same length.
2. Simple structure, small volume and light weight.
3. Tight and reliable. At present, plastic is widely used as the sealing surface material of pneumatic ball valve with good sealing performance, and it has also been widely used in vacuum systems.
4. It is easy to operate and can be opened and closed quickly. It only needs to rotate 90 ° from full opening to full closing to facilitate remote control.
5. Easy maintenance, simple structure of pneumatic ball valve, generally movable sealing ring, easy removal and replacement.
6. When the valve is fully opened or closed, the sealing surfaces of the ball and valve seat are isolated from the medium. When the medium passes through, it will not cause erosion of the sealing surface of the pneumatic ball valve.
7. It has a wide range of applications. The internal thread pneumatic ball valve can be used from a few millimeters to several meters, from high vacuum to high pressure.