The manual knife gate valve is one of the commonly used valve types. It has the advantages of simple structure, easy opening and closing, and reliable sealing. Proper maintenance can extend the service life of the gate valve and ensure the normal operation of the valve. The following are some suggestions for maintaining a manual knife gate valve:

1. Regular inspection:

Regularly check the appearance of the gate valve, including the valve body, valve stem, gate plate and other parts, to check for damage, rust, etc., to ensure that the valve is intact.

2. Clean the valve:

Regularly clean the gate valve, remove dust, dirt and other debris on the surface of the valve, keep the valve clean, and use oil cloth to wipe the surface of the valve to prevent rust.

3. Keep lubricated:

Regularly add lubricating oil to the valve stem to maintain the flexible movement of the valve stem, and pay attention to cleaning the lubricating oil hole to ensure the smooth flow of lubricating oil.

4. Precautions for valve use:

When using a manual knife gate valve, pay attention to gentle operation to avoid damage caused by excessive force. The gate valve should be rotated slowly during operation, and avoid sudden rotation or excessive force to avoid wear of the gate plate or deformation of the valve body.

5. Regular maintenance:

Regularly maintain the manual knife-type gate valve, including replacing the sealing ring, cleaning dust, checking the sealing performance of the valve, etc., to ensure the normal operation of the gate valve.

In short, proper maintenance of manual knife-type gate valves can increase their service life and ensure the normal operation of the valve. According to the actual use of the gate valve, regular inspection, cleaning, and maintenance of the valve can effectively extend its service life and ensure the safety and reliability of the valve.