Description: mean velocity, which is the stroke length multiplied by the number of complete pumping cycles of the piston, plunger or lifting rod connected to the diaphragm per minute (strokes per minute or pump crankshaft speed); Name: piston speed
Description: average speed given by the stroke length multiplied with the number of complete pumping cycles of the piston, plunger or piston attached to the diaphragm per minute (stroke per minute or pump crank speed); Name: piston velocity
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