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Glossary of pump terms: Z

Z: A symbol used in pumping to indicate a pump’s hydrodynamic size.

Z-axis: When referring to a three-dimensional plane, a z-axis refers to the depth of a three-dimensional object.

Zero percent head loss NPSHR (NPSH0): The lowest NPSHR by a pump that results in zero head loss from the performance curve when tested with enough NPSHA.

Zymaxx: The trade name for a composite material containing carbon fibers. Used to make pump components such as bearings, wear ring inserts, bushings, etc.

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