How to repair the leakage of pressure regulating valve of spraying machine

1. Causes of air leakage of pressure regulating valve. Air leakage may occur during the use of the air pressure regulating valve. The main reasons are aging or wear of seals, loose connection at joints, wear of valve core and valve seat, loose valve parts, etc.

2. Check the leaking part. First, confirm the leaking part. You can tell by listening to the sound, or you can smear the leaking part with soapy water to see if there are any bubbles coming out. If the joint connection is not tight, you can tighten the connection thread with tools such as wrench. If the valve core and valve seat are worn, it is necessary to replace the seal in the valve.

3. Seal replacement steps: turn off the gas source, empty the pipeline, remove the valve housing and internal components, take out the original seal, clean and inspect the components where the seal is located, remove dirt, be careful not to damage the surface of the components, install a new seal, put the internal components of the valve back in place, tighten the valve housing, connect the gas path, and conduct a pressure test.

4. Step of adjusting the valve: turn on the gas source to let the gas flow through the valve, gradually open the valve by manual operation or adjustment device until the set pressure is reached, observe the reading of the barometer, and make fine adjustment until the required air pressure is reached.