impeller.net The Online Pump Magazine

07.05.2004

Head

Is used as measure for the pressure difference in the pump technology.

It can be calculated by the pressure difference divided by the density of the pumped fluid and the local gravitational constant.

For Newtonian fluids one can consider the head independent from the pumped fluid for kinematic viscosities less than 20 mm˛/s. By this reason it is especially suitable to present the characteristic curve of centrifugal pumps.

For pumping water the value is equal to the pressure given in meters of water column.

See also:
Total Head
Static Head
Pump H-Q Curve