1. Before installation, confirm whether the performance of the product and the flow direction arrow of the factory are consistent with the moving condition, and the valve cavity is cleaned and cleaned. It is not allowed to have foreign matter attached to the seal ring and the butterfly plate. Allow the disc to be closed to avoid damaging the seal.
2, the disc mounting flange is recommended to use the special flange of the disc valve, that is, HGJ54-91 socket welding steel flange.
3. The position installed in the pipeline, the best position is vertical, but it cannot be flipped.
4, need to adjust the flow during use, there is a worm gear box for control.
5, open and close the number of disc valves, in about two months, open the worm gear cover, check whether the butter is normal, should maintain the right amount of butter.
6. Check the compression requirements of each joint, that is, ensure the beeiness of the packing, and ensure that the valve stem rotates flexibly.
7. The metal sealing butterfly valve product is not suitable for installation at the end of the pipeline. If it must be installed at the end of the pipeline, it is necessary to adopt the fitting outlet flange to prevent the sealing ring from being over-compressed.
8. The valve stem is installed and used to check the valve usage regularly, and the fault is found to be eliminated in time.