Density
The mechanical power requirement of a centrifugal pump (shaft power) is directly proportional to the density of the pumped medium.
P 2 ~ ρP 2 = shaft power
ρ = density of the pumped mediumIn contrast, the throttle curve of the pump H (Q) and the efficiency η (Q) are independent of the density.These relationships are automatically taken into account by the pump selection software.
Of Newtonian fluid characteristics are e.g. the following: