Main features of pneumatic floating ball valve:
1. The fluid resistance of pneumatic ball valve is small, and the fluid resistance of pneumatic ball valve is small in all valve categories. Even for reduced diameter pneumatic ball valve, the fluid resistance is relatively small.
2. The thrust bearing reduces the friction torque of the valve stem, which can make the valve stem operate stably and flexibly for a long time.
3. The sealing performance of the valve seat is good. The sealing ring made of elastic materials such as polytetrafluoroethylene is easy to seal, and the sealing capacity of the pneumatic ball valve increases with the increase of the medium pressure.
4. The valve stem seal is reliable. Because the valve stem only operates as if it is rotating rather than lifting, the packing seal of the valve stem is not easy to be damaged, and the sealing capacity increases with the increase of the pressure of the medium.
5. Since materials such as polytetrafluoroethylene have good self-lubricating property and small friction loss with the ball, the service life of pneumatic ball valve is long.
6. The lower mounted valve stem and the convex step at the head of the valve stem prevent the valve stem from ejecting. If the valve stem seal is damaged due to fire, metal contact can also be formed between the convex step and the valve body to ensure the valve stem sealing.
7. Anti static function: set a spring between the ball, valve stem and valve body, which can lead out the static electricity generated during the switching process.

The stainless steel strip is processed into a stainless steel hose with a diameter of 5mm - for a long time, China has relied on imported advanced CNC machine tools to complete similar tasks. Two sets of advanced pneumatic butterfly valve machines developed by Tongfeng pneumatic butterfly valve have reached the international level, filling the domestic gap, which means that the localization of China's advanced pneumatic butterfly valve machines has ended.
These two machine tools are respectively "4-axis 5-linkage vertical pneumatic butterfly valve processing base" and "2-axis 3-linkage horizontal stainless steel hose processing base". Pneumatic butterfly valves and stainless steel hoses are widely used in defense and military industry, aerospace, cars, ships and equipment manufacturing. In the world, only three or four foreign companies can provide the machines to finish these large-scale high-precision disorderly processing. In China, complete localization is still a blank, relying on imports and being controlled by others.
The numerical control system and key functional components independently developed by Tongfeng Hosepipe are integrated and innovated by contacting the fine mechanical polishing machine (some of the machine body), and the complete localization of advanced numerical control machine tools is completed for the first time. Its central "brain" - numerical control system, "limbs" - key functional components, such as turntable and turntable, have complete independent intellectual property rights and reach the international level of leadership. The numerical control system adopts optical fiber bus technology, with up to 6 axes of useful cooperation, and the control frequency reaches 2000 times per second. It is equivalent to giving 2000 instructions to the machine every second, and any small action is set by the program to ensure the processing accuracy. The turning head and turntable are equivalent to the kitchen knife. The higher the accuracy of their movement positioning, the higher the processing accuracy. The accuracy of these two machine tools has reached one tenth of a million - better performance than similar foreign equipment, but their technical paths are quite different. They use the motor direct drive technology "created in Ningbo". It can be said that the bus based CNC system and the direct drive key functional components have completely broken through the two bottlenecks that limit the deployment of advanced CNC machine tools in China. Since the localization of all key technologies has ended, the price of these two machine tools is only half of that of similar foreign products.