Description: the rated inlet pressure of the plant specified for normal working conditions; Name: nominal input pressure of the plant 
Description: Inlet pressure of the installation for the working conditions; Name: Rated inlet pressure of the installation
Description: Speed that characterizes a pumps cavitation performance in terms of its speed, optimum rate of flow per impeller eye at best efficiency point and NPSH3 at best efficiency point for the first stage at maximum impeller diameter ; Name: Suction-specific speed