Compressing atmospheric air converts it into potential energy which can be stored, distributed, and used as a source of power for pneumatic systems, tools, and processes. Besides nitrogen, oxygen, and other gasses, atmospheric air contains water, hydrocarbon vapor, and solid particulates ranging in size from sub-micron dust to heavy dirt as large as a millimeter. Compressing this mix concentrates solid contaminants and heats the air so that it holds more water vapor. In addition, oil used to
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