Article
Article
Pump
Article By:
Wright, Elliott F. Formerly, Advanced Products Division, Studebaker-Worthington Corporation, Harrison, New Jersey.
Last reviewed:January 2020
DOI:https://doi.org/10.1036/1097-8542.557300
A machine that draws a fluid into itself through an entrance port and forces the fluid out through an exhaust port (see illustration). A pump may serve to move liquid, as in a cross-country pipeline; to lift liquid, as from a well or to the top of a tall building; or to put fluid under pressure, as in a hydraulic brake. These applications depend predominantly upon the discharge characteristic of the pump. A pump may also serve to empty a container, as in a vacuum pump or a sump pump, in which case the application depends primarily on its intake characteristic. See also: Centrifugal pump; Compressor; Displacement pump; Fan; Fuel pump; Pumping machinery; Vacuum pump
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