Industrial Air Compressor

A piston/reciprocating compressor is a positive-displacement air compressor using a crankshaft powered by a piston and cylinders. The process of compressing air decreases its volume while increasing its density without turning it into liquid.Cast Iron Piston Compressors. A piston air compressor is typically made from one of two types of materials — aluminum and cast iron. These metals are used to construct the shaft or pump surrounding the piston.