Nowadays, the use of pneumatic switch ball valve is more and more frequent, so have you mastered the installation essentials of this device? If you only have a preliminary understanding of the ball valve, such as its production and manufacture, but do not know the installation precautions, it is necessary to read this article to help you quickly become familiar with the installation of pneumatic switch ball valves. 　　

The disadvantage of rubber sealed butterfly valve is that when it is used for throttling, cavitation will occur due to improper use, which will cause rubber seat peeling, damage, etc. For this reason, metal sealed butterfly valves have been developed internationally, reducing the cavitation area. In recent years, China has also developed metal sealed butterfly valves, and in Japan, comb shaped butterfly valves with cavitation resistance, low vibration and low noise have also been developed in recent years. 　
Generally, the service life of the seal seat is 15-20 years for rubber and 80-90 years for metal under normal conditions. However, the correct selection depends on the operating conditions. The relationship between the opening of the butterfly valve and the flow basically shows a linear proportional change. If it is used to control the flow, its flow characteristics are also closely related to the flow resistance of the piping. For example, the diameter and form of the valves installed in the two pipelines are all the same, while the pipeline loss coefficient is different, the flow of the valves will also be very different.