Description: Characterization of a file with respect to its application type; Name: Source file type
Description: classification of a file seal according to its application type; Name: type of source file
Description: Speed that characterizes a pump in terms of its speed, flow rate per impeller eye, i.e. total flow for single-flow impeller, half flow for double-flow impeller, at the best efficiency point and head per stage at maximum impeller diameter ; Name: Specific speed