Description: best volumetric flow of the device with best efficiency; Name: volume flow at best efficiency
Description: Rate of flow at the point of best efficiency; Name: Optimum rate of flow
Description: Group of components with the same construction features and the same structure, which - due to similar manufacturing techniques - can be collated for construction approval testing and class conformity controls. They are generally allocated to a construction type. Note: in certain cases, components can be viewed from various construction type specifications as belonging to the same type and, therefore, can be collated for construction approval and class conformity controls; Name: construction form of impeller