Description: Suction specific speed nss as defined in EN 12723 is used to classify the suction characteristics of centrifugal pumps. It is derived from the similarity conditions for cavitation and calculated on the same formal basis as the specific speed ns.; Name: suction specific speed
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
Description: The operating underpressure PS- is the maximum value of the operating underpressure defined from a safety point of view by the manufacturer of the system for the various components in relation to the atmospheric pressure (1 bar) at the maximum permissible temperature TS1; Name: Max. permissible underpressure PS1- at TS1, room1