In-line single-stage circulation pump
TD40-21G/2
TD (in-line circulation) · 50 Hz
TD40-21G/2 is an in-line single-stage circulation pump from the CNP TD (in-line circulation) range (50 Hz). Rated 1.5 kW, 4–16 m³/h, head 17–24 m. Net weight 38 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, 2900 rpm, clean water. Source: Performance table, PDF p. 12.
| Flow (m³/h) | Head (m) |
|---|---|
| 4 | 23.8 |
| 8 | 22.9 |
| 12.5 | 21 |
| 16 | 17.1 |
Dimensions & weight
| Code | Description | Value |
|---|---|---|
| D | D | 140 mm |
| B1 | B1 | 171 mm |
| B2 | B2 | 137 mm |
| B3 | B3 | 98 mm |
| B4 | B4 | 95 mm |
| B5 | B5 | 120 mm |
| H1 | H1 | 68 mm |
| H2 | H2 | 149 mm |
| H3 | H3 | 504 mm |
| L1 | L1 | 320 mm |
| L2 | L2 | 160 mm |
| — | Net weight | 38 kg |