2、 Common faults and elimination methods
1. Before installation, confirm whether the product performance and medium flow arrow of our factory are consistent with the moving conditions, and insert and clean the inner cavity of the valve. It is not allowed to have impurities on the sealing ring and butterfly plate. It is not allowed to close the butterfly plate before the pneumatic ball valve is cleaned to avoid damaging the sealing ring. 　　
2. It is recommended to use the special flange for butterfly valve, namely HGJ54-91 socket welding steel flange. 　　
3. The best position for installation in the pipeline is vertical installation, but it cannot be inverted. 　　
4. During use, the flow shall be adjusted and controlled by a worm gear box. 　　
5. For butterfly valves with many times of opening and closing, the pneumatic gate valve should open the worm gear box cover in about two months, check whether the grease is normal, and keep an appropriate amount of grease. 　
6. Check that all connection parts are required to be pressed tightly to ensure the honeybee property of the packing and the flexible rotation of the valve rod. 　　
7. The metal seal butterfly valve is not suitable for installation at the end of the pipeline. If it must be installed at the end of the pipeline, the outlet flange shall be installed to prevent the seal ring from overstocking and over positioning. 　　
8. The valve rod installation and use reaction shall be regularly checked for the valve use effect, and any fault found shall be eliminated in time.

There is a lot of correlation between the price of electric butterfly valve and the market. We should actively determine these practical problems. Only when you can take this price seriously can you finally complete your overall purchase better. This is very basic for us. As a person who often pays attention to the market and understands the market, your understanding of these is of great benefit. It is best for us to know when to buy and how to produce in advance.