Pump curves and gauges on pump inlets and outlets are necessary to determine

While viscosity is an important fluid property affecting pump performance, pump curves and gauges do not directly measure viscosity. Instead, viscosity is typically determined through laboratory tests or specified by the fluid's manufacturer, making it unrelated to the immediate data provided by pump curves and gauges.

Net Positive Suction Head (NPSH) is crucial for preventing cavitation in pumps, but this information is derived from specific calculations rather than directly from pump curves or gauges. While these tools can indicate suction pressure, they do not inherently assess NPSH requirements without additional data regarding fluid properties and system design.

Specific gravity is a dimensionless quantity comparing the density of a fluid to that of water. Although it influences pump selection and performance, specific gravity is not determined by pump curves or gauges directly. Instead, it is typically calculated or obtained from fluid specifications and does not reflect the operational efficiency of the pump.