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Engineering ToolBox > Pumps, Compressors, Blowers and Fans
There are some significant differences between pumps, compressors, blowers and fans which are summarized below
A pump is a machine for raising a liquid - a relatively incompressible fluid - to a higher level of pressure or head.
A compressor is a machine for raising a gas - a compressible fluid - to a higher level of pressure.
A blower is a machine for moving volumes of a gas with moderate increase of pressure.
A fan moves large amounts of gas with low increase in pressure.