System Head Calculator — draw engineering

Darcy-Weisbach friction + Crane TP-410 K values. Pump curve: paste from datasheet or enter manually. Supports parallel pumps (combined curve), variable speed scaling (affinity laws), and shaft power from efficiency. All losses in metres.

Pump type

Water levels

	Discharge
Top Water Level		mAOD
Mid (Control) Water Level		mAOD
Bottom Water Level		mAOD
Pump Impeller Centreline	—	mAOD

System configuration

Design flow (l/s)

Residual head at delivery (m)

Minimum flow (l/s)

Maximum flow (l/s)

Pipe sections

Equipment losses

Pump curve — optional

Pumps in parallel

Efficiency at operating point (%)

Flow (l/s) Head (m)

NPSH — optional

Suction pipe losses (m)

NPSHr from datasheet (m)

Water temperature (°C)