Description: the actual head at the inlet of the pump; Name: pump inlet head
Description: head observed at inlet area of the pump, corresponding to the sum of the height, pressure head and velocity head; Name: Total head at inlet area of the pump
Description: PN (nominal pressure) is an alphanumeric variable for reference purposes, relating to a combination of mechanical and measurement properties of a pipe component. It comprises the letters PN followed by a dimensionless number (according to EN 1333/96.08); Name: Nominal pressure of the muffs, A1