Description: Measured gap flow between pump casing and impeller; Name: flow of clearance
Description: measured clearance flow between the housing and the impeller; Name: clearance flow
Description: net positive suction head (NPSH) from flow rate at best efficiency point for actual impeller (indication of the minimum inlet pressure in meters required for the pump to deliver according to the QH curve. related to the optimum duty point at the current impeller diameter); Name: net positive suction head for Q opt at actual impeller size