In-line single-stage circulation pump
TD250-20/4
TD (in-line circulation) · 50 Hz
TD250-20/4 is an in-line single-stage circulation pump from the CNP TD (in-line circulation) range (50 Hz). Rated 55 kW, 240–750 m³/h, head 17–25 m. Net weight 722 kg.
- Eleven sizes, DN32 to DN300, flow up to about 900 m³/h
- Head up to about 100 m, 2-pole and 4-pole motors
- Liquid from -15 to +110 °C, working pressure 12 bar (16 bar special)
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, 1480 rpm, clean water. Source: Performance table, PDF p. 25.
| Flow (m³/h) | Head (m) |
|---|---|
| 240 | 24.5 |
| 300 | 24.1 |
| 360 | 23.7 |
| 420 | 23.1 |
| 480 | 22.4 |
| 540 | 21.5 |
| 600 | 20.5 |
| 630 | 20 |
| 660 | 19.3 |
| 720 | 17.6 |
| 750 | 16.5 |
Dimensions & weight
| Code | Description | Value |
|---|---|---|
| D | D | 550 mm |
| B1 | B1 | 484 mm |
| B2 | B2 | 367 mm |
| B3 | B3 | 316 mm |
| B4 | B4 | 243 mm |
| B5 | B5 | 390 mm |
| H1 | H1 | 300 mm |
| H2 | H2 | 495 mm |
| H3 | H3 | 1568 mm |
| L1 | L1 | 1100 mm |
| L2 | L2 | 550 mm |
| — | Net weight | 722 kg |