2、 Function of pneumatic ball valve Pneumatic ball valve is mainly used to cut off, distribute and change the flow direction of medium on the pipeline. The pneumatic ball valve with V-shaped opening also has good flow regulation function. The pneumatic ball valve is not only simple in structure and good in sealing performance, but also small in size, light in weight, low in material consumption, small in installation size, small in driving torque, simple in operation, and easy to realize quick opening and closing within a certain range of nominal diameter. It is one of the fastest growing pneumatic ball valves in recent decades. Especially in the United States, Japan, Germany, France, Italy, Spain, Britain and other industrial developed countries, pneumatic ball valves are widely used. The variety and quantity of use continue to expand, and they are developing towards high temperature, high pressure, large mouth diameter, high sealing, long life, excellent regulation performance and one valve with multiple functions. Their reliability and other performance indicators have reached a high level, It has partially replaced gate valve, stop valve and regulating valve. With the technical progress of pneumatic ball valves, they will be more widely used in the foreseeable short term, especially in oil and gas pipelines, oil refining and cracking units and the nuclear industry. In addition, pneumatic ball valves will also become one of the leading types of pneumatic ball valves in the fields of large and medium-sized caliber, medium and low pressure in other industries.

What should be paid attention to when installing pneumatic butterfly valves?
1. When selecting, in order to facilitate the device, please select loose flange pneumatic butterfly valve at one end as far as possible.
2. When the electric welding operation is stopped at the construction site, the appearance of the pneumatic butterfly valve shall be maintained to prevent welding slag and arc striking from burning the pneumatic butterfly valve.
3. Pneumatic butterfly valve twisting device is strictly prohibited.
4. It shall not bend along the root of pneumatic butterfly valve, and there shall be no dead bend.
5. The medium used shall not be corrosive to the corrugated pipe data, and the chloride ion content in the medium shall be ≤ 25PPM6. The device shall be installed in the correct way as shown in the figure of severe device. (See the device guide) 7. Do not mechanically damage the flange sealing surface.