Vertical multistage centrifugal pump
CDM20-4
CDM / CDMF · 50 Hz · also listed as CDMF20-4
CDM20-4 is a vertical multistage centrifugal pump from the CNP CDM / CDMF range (50 Hz). Rated 5.5 kW, 10–29 m³/h, head 32–56 m. Net weight 88 kg.
- CDM for non-corrosive, CDMF for lightly corrosive liquids
- Boosting, pressurising, HVAC and water treatment
- Hot-water type available (up to +120 °C)
Performance curve Curve-based
Efficiency, shaft power and NPSHr are not published for this model in the source catalogue.
Head versus flow at 50 Hz, 2900 rpm, clean water. Source: Performance table printed p. 21; dimensions p. 41.
| Flow (m³/h) | Head (m) |
|---|---|
| 0 | 55.5 |
| 10 | 52.5 |
| 12 | 51 |
| 14 | 50 |
| 16 | 49 |
| 18 | 48 |
| 20 | 46 |
| 22 | 44 |
| 24 | 41 |
| 26 | 37 |
| 28 | 33 |
| 29 | 31.5 |
Dimensions & weight
| Code | Description | Value |
|---|---|---|
| H1 | pump height | 485 mm |
| H2 | motor height | 390 mm |
| H | overall height, flange | 965 mm |
| D1 | motor diameter | 260 mm |
| D2 | base / flange width | 168 mm |
| weight_cdmf_kg | Net weight CDMF | 81 mm |
| — | Net weight | 88 kg |