A single piston is used to compress air in a single piston air compressor, also known as a single-stage compressor or single piston positive displacement compressor. The simplicity and effectiveness of its design make it ideal for applications needing modest pressure levels. This compressor's main job is to take in ambient air, compress it in a cylinder by means of the piston's reciprocating action, and then transfer the compressed air to either a storage tank or directly to pneumatic equipment.