How long is the service life of pneumatic midline butterfly valve d343h?

（5） The leakage of butterfly valve increases. The causes of leakage are as follows: 1. The leakage is large when the valve is fully closed. ① The valve core is worn with serious internal leakage, and ② valve is not adjusted properly and cannot be closed tightly. 2. The valve cannot reach the fully closed position. ① The medium pressure difference is too large, the rigidity of the actuator is small, and the valve cannot be closed tightly; ② There is foreign matter in the valve; ③ Bush sintering.

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Then we will introduce the installation and maintenance of pneumatic butterfly valve: when installing, the valve disc needs to stop at the closed position; The opening position shall be determined according to the rotation angle of the disc plate; If there is a butterfly valve with bypass valve, it is necessary to open the bypass valve before opening it; At the same time, pneumatic butterfly valves should also be installed according to the manufacturer's installation instructions. Some heavier butterfly valves should also be set firmly. For these maintenance and installation problems, if you are an old hand to install them, you can certainly avoid many problems. However, it is hard for novices to say, because they have no experience in installation and maintenance, it is entirely possible to have some wrong installation during the installation process. 　　　　

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