How To Troubleshoot A Safety Valve
The Safety Release Valve is probably the most important item on your air compressor...it saves lives!
Here's how to tell if the Safety Valve needs replacement:
- It constantly leaks (obviously) upon initial start-up (from 0 PSI).
- If the Safety Valve doesn't blow off at the PSI designated on the Valve itself.
- If the Safety Valve blows off before the compressor shuts off.
NOTE! Find out what the maximum PSI is of your compressor (a.k.a. "cut-out" pressure). If your air compressor has a cut-out pressure of 155 PSI, then your Safety Valve should blow off around 175 PSI. This is typical, it should be rated 20 to 30 PSI above the cut-out pressure because you don't want the Safety Valve blowing off at the same pressure the compressor shut off at, then it would always blow off when the compressor shuts off.
So, if your Safety Valve blows off below the cut-out pressure of the unit (125 PSI, 155 PSI etc.) which is when the Pressure Switch automatically cuts it off, you need to replace your Safety Valve!
Recent Posts
-
Air Compressor Pumps 101: Understanding the Heart of Your Machine
If you rely on compressed air for your workshop, automotive garage, or industrial facility, you know …Jul 1, 2026 -
Common Mistakes to Avoid When Repairing Your Air Compressor
Fixing your own air compressor is an excellent way to save money, minimize project downtime, and ext …Jun 25, 2026 -
Ditch the Rust! Manual vs. Automatic Air Compressor Drain Valves
Every time you run your air compressor, physics works against your machine. As air compresses, it he …Jun 18, 2026