Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Static head, abbreviated as $$h_s$$, (English unit $${ft}$$, Metric unit $${m}$$), is the vertical distance from a reference point of the liquid to a lower reference point of the liquid.

### Static suction

Static suction, abbreviated as $$h_{ss}$$, is the height of the liquid surface in the suction tank above the centerline of the pump.

### Static discharge

Static discharge, abbreviated as $$h_{sd}$$, is the highest liquid surface in the discharge system above the centerline of the pump.