A labeled photo diagram of an air compressor, with arrows pointing to the hose connectors, pressure adjustment knob, pressure gauges, pump, motor, air tank, and drain valve.

The Clarke SHHH50/350 Shhh Air Max is a high output air compressor for when performance really matters.

The pressure switch may also incorporate an unloader valve that reduces tank pressure when the compressor is turned off. Many articulated-piston compressors are oil lubricated.