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Inlet cross-section

The pump's inlet cross-section is usually deemed to be the flow cross-section of the pump suction nozzle. If there is no suction nozzle, the inlet cross-section must be defined as a suction-side flow cross-section (e. g. of a tank, a pipe) with known geodetic and hydraulic data (see NPSH). Refer to EN 12723 for examples.

Inlet cross-section