How many tips should I know when installing an electric butterfly valve?

What are the must-know tips for installing Electric Butterfly Valves? Before installation, confirm whether the product performance and the medium flow arrow are consistent with the moving conditions, and clean the valve cavity, do not allow impurities and foreign matter attached to the sealing ring and butterfly plate, and never close the butterfly plate before cleaning to avoid damage to the sealing ring. It is recommended to use a special flange for disc valves, that is, HGJ54-91 socket welded steel flanges, which are installed in the pipeline, and the best position is vertical mounting, but they cannot be reversed. The flow rate needs to be adjusted during use, and there is a worm gearbox for control. For butterfly valves that open and close more times, open the worm gear box cover in about two months, check whether the butter is normal, and maintain an appropriate amount of butter. Check the requirements of each connection to ensure the bee nature of the packing material, and also ensure the flexible rotation of the valve stem. Metal-sealed butterfly valves are not suitable for installation at the end of the pipeline, if they must be installed at the end of the pipeline. It is necessary to take the equipping outlet to prevent the sealing ring from overflowing and over-positioning. Valve stem installation and use reaction Regularly check the valve use effect, and eliminate faults in time. Failures that can occur even if eliminated methods.