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Pump Affinity Laws
Predict pump flow, head and power at a new speed or impeller diameter using the affinity laws.
The Ensign ToolboxPump Affinity LawsPredict pump flow, head and power at a new speed or impeller diameter using the affinity laws.
Drive change
rpm
1450 = nominal 4-pole 50 Hz
rpm
Known duty point (condition 1)
m³/h
m
kW
Affinity power scaling assumes constant efficiency
Enter the known duty point (Q₁, H₁, P₁) to calculate