Enter Discharge Static Head in metres. This is the vertical height between the pump centre and the final discharge point. If the discharge point is below the pump, then enter as a negative number.
If pipe rises ie: to 40m then drops to 30m:- Then 30m is usually the static head, but it is also necessary to calculate with 40m static head to confirm there is enough flow to fill pipe and establish the syphoning effect that reduces static head to 30m. ENTER “DEMAND” PRESSURE – AS HEAD, ie: pressure required by sprinkler etc, if there are multiple sprinklers, the pressure is only added once. To convert to head , DIVIDE by: psi = 1.42, kPa = 9.789 (water only)
