Non-clogging self-priming sewage pump
SP-3(2050)
SP (self-priming sewage) · 50 Hz
SP-3(2050) is a non-clogging self-priming sewage pump from the CNP SP (self-priming sewage) range (50 Hz). Rated 18.5 kW, 30–100 m³/h, head 19–29 m. Net weight 190 kg.
- Flow 10–750 m³/h, head 3–38 m, motors 1.1–90 kW
- Solids up to 38 mm (SP-2), 63 mm (SP-3), 76 mm (SP-4 to SP-10)
- Rapid self-priming with a flap valve; maximum suction head printed per speed
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, 2050 rpm, clean water. Source: Performance and operating tables, printed p. 9; dimensions pp. 20–26.
| Flow (m³/h) | Head (m) |
|---|---|
| 30 | 29 |
| 40 | 28 |
| 50 | 26.8 |
| 60 | 25.3 |
| 70 | 24 |
| 80 | 22.5 |
| 90 | 20.5 |
| 100 | 18.9 |
Dimensions & weight
| Code | Description | Value |
|---|---|---|
| DN | flange bore | 80 mm |
| D | flange outer diameter | 190 mm |
| D1 | bolt circle | 150 mm |
| D2 | raised face | 127 mm |
| n | flange bolt holes | 4 |
| d1 | flange bolt-hole diameter | 19 mm |
| H2 | H2 | 431.8 mm |
| A | A | 377 mm |
| A1 | A1 | 328 mm |
| B | B | 228.6 mm |
| B1 | B1 | 76.2 mm |
| L2 | L2 | 285 mm |
| d2 | foot bolt-hole diameter | 18 mm |
| H3 | H3 | 190.5 mm |
| L3 | L3 | 102 mm |
| d | shaft diameter | 38 mm |
| H | overall height, bare pump | 697.5 mm |
| Am | Am | 389 mm |
| H4 | H4 | 652 mm |
| L | overall length, bare pump | 712.2 mm |
| L4 | L4 | 277 mm |
| E1 | E1 | 15 mm |
| E2 | E2 | 50 mm |
| belt_Ad | Belt-driven set — Ad | 341 mm |
| belt_Ld1 | Belt-driven set — Ld1 | 100 mm |
| belt_Ld2 | Belt-driven set — Ld2 | 744 mm |
| belt_d | Belt-driven set — d | 20 mm |
| belt_H11 | Belt-driven set — H11 | 552 mm |
| belt_H31 | Belt-driven set — H31 | 310.5 mm |
| belt_H41 | Belt-driven set — H41 | 772 mm |
| belt_L | Belt-driven set — L | 477 mm |
| belt_Ld | Belt-driven set — Ld | 944 mm |
| belt_K | Belt-driven set — K | 752 mm |
| belt_Hm | Belt-driven set — Hm | 818 mm |
| belt_Am | Belt-driven set — Am | 389 mm |
| belt_HD | Belt-driven set — HD | 545 mm |
| belt_E | Belt-driven set — E | 41 mm |
| — | Net weight | 190 kg |