Description: Product of geometrical displacement volume and speed of rotation or stroke frequency; Name: geometric rate of flow
Description: displacement volume for one stroke or one cycle; Name: geometrical flow
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