Flowpath Engineering Portal
Pump Design — System Curve & Operating Point Calculator
Generate pump system curves and determine operating points. Calculate total dynamic head, friction losses, and pump selection for water supply and drainage systems.
What this tool does
System Curve Generation
Build system head-loss curves from static head, pipe friction, and minor losses to visualise the hydraulic demand across a range of flow rates.
Operating Point Analysis
Overlay pump performance curves onto the system curve to identify the operating point, efficiency, and NPSH requirements.
Pipe Friction Calculation
Calculate pipe friction losses using Hazen-Williams or Darcy-Weisbach methods for accurate system curve generation.
Duty / Standby Scenarios
Evaluate single-pump and parallel-pump configurations to determine flow and head for duty/standby pump station design.
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Open Pump Design CalculatorPart of the Flowpath Engineering suite of free civil engineering tools for New Zealand.