Pneumatic ball valve was introduced in the 1950s. With the rapid development of science and technology, the continuous improvement of production process and product structure, it has rapidly developed into a major valve category in just 40 years. In western industrial developed countries, the use of pneumatic ball valves is increasing year by year. Pneumatic ball valve is most suitable for use as switch and shut-off valve, V-type pneumatic ball valve. In addition to the pipeline parameters, special attention should be paid to the environmental conditions for the use of electric valves. Since the electric device in the electric valve is an electromechanical device, its use status is greatly affected by its use environment. 　　

Advantages of private customized corrugated pneumatic butterfly valve
Three functions: reduce the device stress of the pipeline, compensate for the displacement of the rated position of the pipeline, and absorb the vibration of the pipeline system. What are the special features of the corrugated pneumatic butterfly valve
1. In order to reduce the number of corrugated sections of bellows, 50% cold drawing shall be considered.
2. Ash baffle: it can not be used for air duct or pipe with little dust, and it should be used for flue with much dust.
3. Maximum allowable shrinkage per wave recommended: full height △ α= ± 24mm half height △ α= ±12mm。
4. The standard half height corrugated pneumatic butterfly valve is applicable to places with a sectional area of less than 4.6 square meters and the overall dimensions of the flue and air duct where one side is less than 1.5 m but more than 0.6 mm. The standard full height corrugated pneumatic butterfly valve is applicable to all flue ducts.