Enter Suction Static Head.This is the vertical difference between the water level and the centreline of the pump in metres. If the water level is above the pump (flooded suction), then enter as a negative number (ie: -5). This is the one time in pump selection when it is a good idea to add a little extra margin, as it is difficult to estimate exact entry losses into the pump, we should allow for turbulence, losses due to turbulence, etc. So add a metre for confidence with NPSH. Warning, this calculator does not allow for friction loss due to fittings etc on suction side. Calculate system & then add suction fitting info into text boxes, click Calculate, & add additional loss to SUCTION STATIC and remove suction fittings from calculation, re-calculate.
