System curve with pump curve overlay

System Curve & Pump Curves Overlay

Plot your system curve (H = H_static + k·Q²) and overlay up to two pump curves. Optional combined curves (parallel & series). Units are handled automatically.

Flow unit

Head unit

Tip Use the Design Point method unless you already know a resistance coefficient k.

System Curve

Definition mode

Static head (m)

Design flow (at total head), Qd

In selected flow unit

Total head at Qd, Hd (m)

Chart max flow (x-axis)

In selected flow unit

Samples (resolution)

Pump A

Definition

Label

Paste data pairs (one per line: flow, head)

Flow in selected unit; head in m.

Pump B (optional)

Definition

Label

Combined curves (requires A & B)

Parallel (sum flows at equal head) Series (sum heads at equal flow)

Plot

Operating points are calculated where the pump (or combined) curve intersects the system curve.

Operating Points

Curve	Flow	Head