Pump Curves and Affinity Laws

CREWFORGE · MILLWRIGHT EXAM PREP

Pump speed (N)

Impeller diameter (D) · trim limit 10 %

Discharge valve opening

Static head (H_st)

Flow (Q)

Head (H)

% of BEP flow

Efficiency (η)

Brake power

Pump ΔP

BEP flow

BEP head

Shutoff head