The manual booster structure of the pneumatic pneumatic ball valve introduces that there are many valves in the gas pipeline that need to be closed and opened quickly, so the valves driven by the gas-liquid system meters can also be controlled remotely. Because the medium pressure in the transmission gas pipeline fluctuates greatly, when the pressure is relatively high, It is difficult to open and close the valve when the friction torque of the ball rotation is very large. A large driving force must be required, which requires an emergency mechanism to input energy to the driving system to increase the pressure of the working medium.

Structural characteristics
1. It still has stable sealing performance under high temperature and high pressure. Its special sealing system can ensure high sealing performance in all temperature ranges from ultra-low temperature to ultra-high temperature
2. The three-dimensional eccentric sealing system combined with the optimized design makes the opening resistance of the valve small. The sealing surface of the butterfly plate is a cone that is always convex upward. When opening, all points on the circumference of the butterfly plate complete the separation from the sealing ring at the same time, and solids are not easy to accumulate on the sealing surface. The closing process of the valve is completed through the elastic compression of the sealing ring,
3. There is no phase jam between butterfly plate and sealing ring
4. The sealing performance of the valve is not affected by temperature change