Description: minimum existing (NPSH) value in the inlet cross-section of the pump, which is determined by the system conditions for a fixed flow rate; Name: npsh avail
Description: Minimum NPSH available at the inlet area of the pump as determined by the conditions of the installation for a specified rate of flow ; Name: Net positive suction head available
Description: Ratio of actual production to required production, or any other reference level, over a specified period of time; Name: Production based availability