This standard is for types, nomenclature, and definitions of rotodynamic pumps with radial, mixed flow, and axial flow impellers, as well as regenerative turbine, Pitot tube, vertical diffuser, submersible motor deep-well and shortset pumps, commonly defined as vertically suspended rotor and vertical overhung impeller types (that may be driven by vertical electric motors or horizontal engines with right-angle gears) of all industrial/commercial types.