![Impeller Alterations for Better Performance | Pumps Systems](/3wzg0da/361.jpg)
Impeller Alterations for Better Performance | Pumps Systems
· Plug this value into the affinity equation and see where Q 2, H 2 plot on the curve. Repeat the process until Q 2 and H 2 plot on the reference curve. The formula used for the calculation is derived from combining Equation 1 and Equation 2. H 2 = H 1 * (Q 2 /Q 1) 2 Equation 4 Where: H 2 = the head on the reference curve the point will pull from