Description: Design flow rate in the outlet cross-section of the system divided by the outlet cross-section of the system; Name: Average design speed at the plant outlet
Description: Rated flow at the outlet area of the installation divided by the inlet area of the installation; Name: Mean rated velocity at outlet area of the installation
Description: the norm the material. The material number is taken from this norm. Type and number of the norm with issue year and issue month must be given; Name: Reference norm material of the displacement units