Horizontal cooling-tower pump
WLTS125-5/4
WLTS (horizontal, extended shaft) · 50 Hz
WLTS125-5/4 is a horizontal cooling-tower pump from the CNP WLTS (horizontal, extended shaft) range (50 Hz). Rated 4 kW, 150–200 m³/h, head 4–6 m. Net weight 90 kg.
- Large flow, low head: 30–300 m³/h, up to 9 m
- Liquid temperature -15 to +100 °C, working pressure up to 6 bar
- Back-pull-out structure with motor fixed on a base for easy installation and service
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, 1450 rpm, clean water. Source: Performance table and installation dimensions, printed pp. 11–12.
| Flow (m³/h) | Head (m) |
|---|---|
| 150 | 5.9 |
| 160 | 5.6 |
| 170 | 5.3 |
| 180 | 5 |
| 190 | 4.6 |
| 200 | 4.1 |
Dimensions & weight
| Code | Description | Value |
|---|---|---|
| L1 | overall length | 671 mm |
| L2 | base length | 450 mm |
| L3 | L3 | 175 mm |
| L4 | L4 | 150 mm |
| L5 | L5 | 135 mm |
| L6 | L6 | 135 mm |
| L7 | L7 | 360 mm |
| L8 | L8 | 255 mm |
| L9 | L9 | 280 mm |
| H | overall height | 412 mm |
| H1 | H1 | 212 mm |
| R | R | 6 mm |
| D1 | flange bore DN | 125 mm |
| D2 | bolt circle | 210 mm |
| D3 | flange outer diameter | 250 mm |
| n | flange bolt holes | 8 |
| a | bolt-hole spacing angle (°) | 22.5 mm |
| d1 | bolt-hole diameter | 18 mm |
| — | Net weight | 90 kg |