SCL Pump Selection Tool
Select a pump by duty point
Choose a flow and head, or click directly on the performance graph. Simple mode gives a quick recommendation; Advanced mode lets you compare pump families, hydraulic ranges and parallel CR pump arrangements.
Select e.g. SQE 5 or CRI 5 to display and compare every model in that range.
For CR/CRI/CRN/CRIE only. Parallel pumps add flow; each pump works at the same head.
Curve interactionHover over a grey curve for pump details. On touch screens, tap a curve to hold its details.
Performance mapClick or drag the duty point · scroll to zoom
Your dutyRecommendedSelected rangeOther optionsSingle-phase capability
Graph controls: drag the blank graph to pan, use the mouse wheel to zoom, drag the duty marker to move it, or double-click the graph to place the duty point. Reset view returns to the automatically fitted zero-based view. Click Reset view to fit the currently selected pump family or range again. Hover or tap another curve to inspect it.
Help me calculate my duty pointCalculate total dynamic head from your installation
Professional / engineering detailsSelection method, parallel duty split, curve provenance and calculated values
Selection basis: official Grundfos 50 Hz performance data. SQ and SQE curves use tabulated performance points. SP and CR-family curves are sampled/interpolated from official Grundfos family charts and retain conservative head margins. Parallel-pump selections use identical pumps at the same head with total flow divided equally between running pumps. Confirm final installation conditions, borehole yield, cable sizing, NPSH where applicable and exact current product data before commissioning.