What is difference between Static Head And Static Lift. When in a pumping system, the source of liquid is below pump datum, head is defined as Static Suction Lift. It is the distance between pump datum and the liquid surface. This attracts -ve sign. Example- Pump operating to lift water from well and pump it to overhead tank. In this example, water is drawn from below the pump datum. Fig-1.
When in a pumping system, the source of liquid is above pump datum, head is defined as Static Suction Head. It is the distance between pump datum and the liquid surface. It is also called Flooded Suction. Example- pump operating to transfer water from ground level tank to overhead tank. Ref Fig-2
Total Head = Suction Head + Discharge Head
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