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Mechanical Action Air Pump
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Description: A pump is a device used to move fluids, such as liquids or slurries, or gases. A pump displaces a volume by physical or mechanical action. One common misconception about pumps is the thought that they create pressure. Pumps alone do not create pressure; they only displace fluid, causing a flow. Adding resistance to flow causes pressure. Pumps fall into five major groups: direct lift, displacement, velocity, buoyancy and gravity pumps, and their names describe the method for moving a fluid.
Source: Government Printing Office The Official Gazette of the United States Patent Office (Washington: Government Printing Office, 1895)
Keywords: pump, air pump, mechanical action, pressure, displace fluid
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