Description: classifiying a device depending on its usage, operation and fabrication; Name: Device type
Description: Characteristic to differentiate between different products of a product family or special variants; Name: Product type
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