Deep-well submersible multistage stainless steel pump
SJ12-21
SJ (deep-well submersible) · 50 Hz
SJ12-21 is a deep-well submersible multistage stainless steel pump from the CNP SJ (deep-well submersible) range (50 Hz). Rated 7.5 kW, 3–18 m³/h, head 58–138 m.
- Fourteen sizes from 1 to 200 m³/h rated flow
- Flow 0.2 to 240 m³/h
- AISI 304 stainless steel construction
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, 2850 rpm, clean water. Source: Performance table, SJ size page (PDF p. 9).
| Flow (m³/h) | Head (m) |
|---|---|
| 3 | 138 |
| 4 | 136 |
| 6 | 130 |
| 8 | 123 |
| 10 | 115 |
| 12 | 106 |
| 14 | 95 |
| 16 | 77 |
| 18 | 58 |