Maintenance:

1, the purpose of use and maintenance, is to extend the valve life and ensure reliable opening and closing.

2, stem thread, often with stem nut friction, to be coated with a little yellow dry oil, molybdenum disulphide or graphite powder, play a role in lubrication.

3, The valve which is not opened and closed often, ,still need  to regularly turn the handwheel, add lubricant to the stem thread, in case of bite.

4, outdoor valves, to add a protective sleeve to the stem, to prevent rain, snow, dust and rust.

5, if the valve system machinery to be moved, to add oil to the gearbox on time.

6. Always keep the valve clean.

7. Check and maintain the integrity of other parts of the valve frequently.If the handwheel of the fixed nut off, to match,

8, can not make do with the use, or will grind the garden valve stem upper square, gradually lose the reliability, and even can not start.

9.Do not rely on the valve to support other weights, do not stand on the valve.

10, valve stem, especially the thread part, to often wipe, has been dirty by the dirt of the lubricant to replace the new, because the dust contains hard debris, easy to wear thread and stem surface, affect the service life.