Good sealing performance of valve seat: the sealing ring made of elastic materials such as polytetrafluoroethylene is easy to seal, and the sealing capacity of pneumatic ball valve increases with the increase of medium pressure.
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.
Simple structure, small size and light weight.
Convenient operation, fast opening and closing: only 90 ° rotation is required from full opening to full closing, which is convenient for remote control.
Convenient maintenance: the ball valve is simple in structure, the sealing ring is generally movable, and it is easy to remove and replace.
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 valve sealing surface.
Wide range of applications: the diameter ranges from a few millimeters to several meters, from high vacuum to high pressure. The ball valve can be used in media with suspended solid particles due to its wiping property during opening and closing.
High processing precision: the cost is expensive, and it is not suitable for use in high temperature. If there are impurities in the pipeline, it is easy to be blocked by impurities, resulting in the valve cannot be opened.

Pneumatic butterfly valve ends the breakthrough in localization of advanced pneumatic butterfly valve machine
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.