Discharge Head 
Discharge HeadThe head H is defined as For the determination of the intersection of system curve and pump curve it is useful to relate the static pressure of the pumps outlet p´_{3} to the axis of it´s suction side. Static pump pressure p_{3} corresponds to the static pressure of the system curve. Pressure difference (p_{3}p_{2}) can be calculated without knowledge of the difference in height Δh_{p} of the pumps suction und pressure side.
