Description: the best flow rate of a pump at the highest efficiency point; Name: Optimal volumetric flow
Description: Rate of flow at the point of best efficiency; Name: Optimum rate of flow
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