Vertical cooling-tower circulation pump
LLT65-5/1.1
LLT (coaxial) · 50 Hz
LLT65-5/1.1 is a vertical cooling-tower circulation pump from the CNP LLT (coaxial) range (50 Hz). Rated 1.1 kW, 30–50 m³/h, head 3–7 m. Net weight 32 kg.
- Large flow, low head: 30–300 m³/h, up to 8.9 m
- Liquid temperature -15 to +100 °C, working pressure up to 6 bar
- Coaxial structure, small footprint, in-line DN65–DN150 flanges
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 and installation dimensions, printed pp. 5-6.
| Flow (m³/h) | Head (m) |
|---|---|
| 30 | 6.6 |
| 35 | 5.9 |
| 40 | 5 |
| 45 | 4.3 |
| 50 | 3.1 |
Dimensions & weight
| Code | Description | Value |
|---|---|---|
| A | pump length | 340 mm |
| B1 | lower section height: base to motor flange | 100 mm |
| B2 | upper section height: motor | 110 mm |
| H | overall height | 490 mm |
| A1 | mounting | 130 mm |
| A2 | mounting | 170 mm |
| d1 | mounting hole | 15 mm |
| H1 | inlet axis height | 100 mm |
| H2 | H2 | 105 mm |
| H3 | H3 | 12 mm |
| DN | inlet / outlet flange | 65 mm |
| d | flange inner bolt circle | 118 mm |
| K | bolt circle | 145 mm |
| D | flange outer diameter | 185 mm |
| alpha | α — bolt angle (°) | 45 mm |
| bolts | Number of flange bolts | 4 mm |
| bolt_dia | Bolt hole diameter | 18 mm |
| — | Net weight | 32 kg |