Vertical multistage centrifugal pump
CDM1-21
CDM / CDMF · 50 Hz · also listed as CDMF1-21
CDM1-21 is a vertical multistage centrifugal pump from the CNP CDM / CDMF range (50 Hz). Rated 1.1 kW, 0.5–2.4 m³/h, head 50–122 m. Net weight 36 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. 11; dimensions p. 36.
| Flow (m³/h) | Head (m) |
|---|---|
| 0 | 122 |
| 0.5 | 121 |
| 0.7 | 120 |
| 1 | 117 |
| 1.2 | 113 |
| 1.4 | 107 |
| 1.6 | 100 |
| 1.8 | 90 |
| 2 | 78 |
| 2.2 | 65 |
| 2.4 | 50 |
Dimensions & weight
| Code | Description | Value |
|---|---|---|
| H1 | pump height | 577 mm |
| H2 | motor height | 250 mm |
| H | overall height, flange | 902 mm |
| H_oth | overall height, other connections | 877 mm |
| D1 | motor diameter | 148 mm |
| D2 | base / flange width | 108 mm |
| weight_cdmf_kg | Net weight CDMF | 32 mm |
| — | Net weight | 36 kg |