Vertical multistage centrifugal pump
LDMF3-21
LDMF (hot water) · 50 Hz
LDMF3-21 is a vertical multistage centrifugal pump from the CNP LDMF (hot water) range (50 Hz). Rated 2.2 kW, 1.2–4.4 m³/h, head 74–155 m. Net weight 41 kg.
- Low NPSH requirement for hot water
- Up to +120 °C (hot-water type)
- PN25 flange (DN25 / DN32 / DN40)
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. 8; dimensions p. 4.
| Flow (m³/h) | Head (m) |
|---|---|
| 1.2 | 155 |
| 1.6 | 152 |
| 2 | 147 |
| 2.4 | 140.5 |
| 2.8 | 132 |
| 3 | 127 |
| 3.2 | 121 |
| 3.6 | 108 |
| 4 | 92 |
| 4.4 | 74 |
Dimensions & weight
| Code | Description | Value |
|---|---|---|
| H1 | pump height | 587 mm |
| H2 | motor height | 293 mm |
| H | overall height, flange | 955 mm |
| H_oth | overall height, other connections | 930 mm |
| D1 | motor diameter | 172 mm |
| D2 | base / flange width | 120 mm |
| — | Net weight | 41 kg |