Before installation, we should not assume that the installation work is to take out the device directly for assembly. Instead, we should first make a series of installation preparations. First, prepare the front and rear pipelines to ensure that the front and rear pipelines are coaxial and the sealing surface can be parallel. At the same time, clean the front and rear pipelines to ensure cleanliness and integrity of all components before installation. Once the parts are damaged, the manufacturer can solve the problem. At the same time, it is necessary to remove the protective parts at both ends of the ball valve, check whether the valve hole is clean, and timely handle any stains found. It may not happen very often, but the actual situation is uncertain. 　　

The pneumatic butterfly valve has its own characteristics, but there are many undeveloped projects that have not been applied to the pneumatic butterfly valve. These projects are being developed and researched. It will wrap the valve rod tightly, resulting in large return difference. Cause mechanical damage and shorten the life of the valve.