It mainly explains the additional code of pneumatic ball valve, pneumatic ball valve code, driving mode, connection form, structural form, sealing material, pressure rating, and valve body material. The preparation method of pneumatic ball valve model and the comparison description of pneumatic ball valve model code: pneumatic ball valve function code: V means the valve core has V-shaped structure, D means low temperature, B means insulation, P means eccentric structure U, S and DY mostly refer to top mounted type; Pneumatic ball valve drive code: 2 indicates electro-hydraulic, 3 indicates turbine, 6 indicates pneumatic, 7 indicates hydraulic, 9 indicates electric and manual without code;

What role does pneumatic butterfly valve play in engineering application
Pneumatic butterfly valves are more and more widely used in engineering. However, with correct appearance and application, stainless steel bellows play a very important role in improving the service life and working conditions of hoses. The nominal pressure of various pneumatic butterfly valves refers to the normal temperature. Ordinary hydraulic test and blasting test are also stopped under normal temperature. The small detour radius Rs of metal corrugated hose is a particularly critical parameter in engineering application, which will directly affect the service life of the hose. The working conditions in the theoretical application are various, and the application conditions are also very complex.
Therefore, it is very difficult to give a precise planning detour radius with strong versatility through theoretical accounting. The small detour radius of pneumatic butterfly valve confirms that the length of pneumatic butterfly valve should be correctly selected in the future. If the hose is too long, instability will occur, flow resistance will increase, and additional mechanical operation and oscillation will occur. If the pneumatic butterfly valve is too short, it may fail to compensate, reduce vibration and eliminate noise, and other attempts will also result in excessive circuitous response, affecting the life. Admit that the length of pneumatic butterfly valve requires many factors to be considered. But the first thing to consider is the detour radius and equipment conditions. It not only has the same flexibility as the rubber tube, but also has the characteristics of light weight, small size, corrosion resistance, fatigue resistance, strong bearing ability, safe and reliable operation under the upper and lower temperature conditions. These characteristics cannot be compared with rubber pipes, so they have been widely used in petrochemical equipment and engineering pipelines.