Compressors use a pressure switch to stop the motor when tank pressure reaches a preset limit–about 125 psi for many single-stage models. Most of the time, though, you don't need that much pressure.

Quincy Compressor reports on enhancing compressed air system efficiency through audits, leak elimination, pressure ...

The air compressor unloader valve is usually built into the pressure switch assembly, though it's sometimes found on top of ...

Pressure on an air compressor is measured in pounds per square inch (psi), and it determines how much force the compressor exerts. Most portable air compressors produce between 125 and 150 psi.

With the basic kit you get a nine-port 2.8-gallon air tank, several air fittings, a pressure switch, drain, a 175-psi safety valve, thread sealant, mounting brackets, and one compressor (you can ...