How should the metal sealed butterfly valve be maintained

The maintenance of metal sealed butterfly valves in daily use mainly includes the following aspects:

I. Regular inspection and cleaning:

In the daily use process, the appearance and connection parts of the metal sealed butterfly valve should be checked regularly to ensure that the main components such as the valve body, valve disc and valve stem have no cracks, deformation or corrosion, and maintain its integrity and reliability. Secondly, the connection between the valve body and the pipeline should be checked regularly to prevent leakage. Third, the inside of the metal-sealed butterfly valve should be cleaned regularly, and appropriate cleaners and tools should be used to remove dirt and sediment inside the valve body to maintain the smooth flow of the valve. Especially when foreign bodies or impurities are found inside the valve, they should be cleaned in time to avoid affecting the normal operation of the valve.

Second, lubrication and sealing performance check:

Regularly lubricate the moving parts of the metal sealed butterfly valve, such as the stem, the seat, etc., and use appropriate lubricants to reduce friction and wear to ensure the flexibility and tightness of the butterfly valve. Pay attention to the selection of lubricants to avoid chemical reactions with the fluid medium, affecting the service life of the valve. Check the sealing performance of the metal sealed butterfly valve regularly, and ensure that the sealing surface and sealing ring of the valve are intact. If the sealing surface is found to be worn or damaged, it should be replaced in time. At the same time, use appropriate leak detection tools to detect whether there is leakage of the valve, and take timely measures to repair.

Third, replacement of wearing parts:

Metal sealed butterfly valve in the process of use, spool seal ring, stem and seat and other components may be worn or damaged. Once this happens, these wearing parts should be replaced in time to ensure the normal operation of the valve and prevent gas leakage.

Operation precautions:

When operating the metal sealed butterfly valve, ensure that the operation is correct and smooth to avoid damage to the valve caused by excessive force or improper operation. Butterfly valves that are not used for a long time should be opened and closed regularly several times to maintain their flexibility and sealing performance.

In summary, through regular inspection, cleaning, lubrication, replacement of wearing parts and attention to correct operation, the hard seal butterfly valve can be effectively maintained, extend its service life, and ensure its stable and reliable operation.