The maintenance and precautions of air compressor valves are key to ensuring the normal operation of the equipment and extending its service life. Here are some important precautions:

1.Check the valve regularly: Check the valve for damage, including whether the valve plate and spring are broken, distorted or deformed, and whether the spring has lost its elasticity. If any problems are found, replace them in time.

2.Sealing surface of valve disc and valve seat: Check the wear and scratches of the sealing surface. If the sealing surface is slightly damaged, it can be repaired by grinding. If the damage is serious, the corresponding parts need to be replaced.

3.Valve plate and lift limiter guide rail fit: Check the fit of the valve plate on the guide rail to ensure that the valve plate does not move excessively due to wear.

4.Cleaning and assembly: When assembling the gas valve, ensure that all parts are clean and assembled according to the design requirements. Use appropriate parts and ensure that the contact between the valve plate and the valve seat, the gap between the valve plate and the lift limiter, etc. meet the specifications.

5.Leak test: Before installing the gas valve, a leak test is required to ensure the sealing performance of the gas valve. Use an inspection method similar to the working environment to simulate the working state of the gas valve to accurately detect leakage.

6.Installation: When installing a new valve, make sure that the system pipeline, cylinder, and valve nest have been thoroughly cleaned. Replace all valve gaskets and ensure that the valve cover bolts are evenly tightened to avoid eccentric installation of the valve.

7.Selection of air valves: Choose air valves suitable for specific working conditions. Do not mix air valves from different manufacturers on the same compressor, especially air valves of the same level.

8.Monitor the temperature of the valve cover: Regularly check and record the temperature of the valve cover, analyze the valve operation status through temperature changes, predict its lifespan, and reasonably arrange maintenance time.

9.Monitor the operating sound of the gas valve: Use a stethoscope or other tools to monitor the operating sound of the gas valve and compare it with valves of the same level and name to find the gas valve that is not working properly.

10.Analyze changes in process parameters: Valve leakage may cause changes in temperature, pressure or flow. Through the changes in these parameters, the valve failure can be analyzed.

Following these precautions can improve the quality of valve maintenance, reduce unplanned downtime, and improve the operating efficiency and reliability of the air compressor.