Portable air compressor gauges

Why do gauges have different readings on them? How to read correctly.

Comments for Portable air compressor gauges

Click here to add your own comments

Aug 07, 2014
Air compressor gauges
by: Bill

Your typical air compressor will have two gauges.

One of them displays the pressure that is in the tank and that pressure display will increase while the compressor motor and pump are running, usually up to the cut out pressure of the pressure switch.

The second compressor gauge displays the pressure that the air regulator is set for, the pressure that will flow down the hose to the air tool. If that gauge is displaying zero PSI, and there is pressure in the tank, shown on the tank air gauge, then it is likely that the air regulator has been turned down to zero PSI.

For more information on regulators, what they do and how to adjust them, please see that page on this site.



Click here to add your own comments

Add your own question or comment. It's easy to do. How? Simply click here to return to Ask A Compressor Question.