Model: ISG pipeline pump and CDL(F) multistage pump
At low and medium head a single-stage pipeline pump is simpler; at high head a multistage CDL is smaller and more efficient. Real figures from both ranges.
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Both pumps install in line and both handle clean water, so the question comes up often. Look at the same duty in both ranges.
| Duty | Single-stage pipeline pump | Multistage CDL(F) |
|---|---|---|
| 12.5 m³/h at 80 m | 40-250(I): 12.5 m³/h, 80 m, 11 kW | CDL(F) 12-80: 12 m³/h, 80 m, 5.5 kW |
| 6.3 m³/h at 50 m | 40-200: 6.3 m³/h, 50 m, 4 kW | CDL(F) 8-50: 8 m³/h, 45 m, 2 kW |
| 100 m³/h at 20 m | 100-125: 100 m³/h, 20 m, 11 kW | Outside the sweet spot of the range |
At high head and small flow, the multistage pump does the job with a much smaller motor. At large flow and low head, the single-stage pipeline pump is simpler, cheaper and easier to service.
Compare the two ranges in the pipeline pump table and the CDL(F) table.
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