Description: Distance of the absolute static energy level above the energy level of the vapor pressure at the associated material temperature, referred to the (NPSH) reference plane.; Name: NPSH
Description: amount of the absolute value of the total head above the head, equivalent to the vapour pressure of the liquid at the particular temperature, with reference to the NPSH datum plane; Name: net positive suction head
Description: maximum value of the mass of the liquid at design temperature divided by its volume, when stating the density, the unit of density used, together with the temperature, shall be explicitly given, for example kilogram per cubicmeter or gramme per mililiter at t°C (see the note), the standard reference temperature for international trade in petroleum and its products is 15°C (see ISO 5024), but other reference temperatures may be required for legal metrology or other special purposes.; Name: maximum density at design temperature