Non-clogging self-priming sewage pump
SP-8(1250)
SP (self-priming sewage) · 50 Hz
SP-8(1250) is a non-clogging self-priming sewage pump from the CNP SP (self-priming sewage) range (50 Hz). Rated 55 kW, 200–500 m³/h, head 18–26 m. Net weight 655 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, 1250 rpm, clean water. Source: Performance and operating tables, printed p. 15; dimensions pp. 20–26.
| Flow (m³/h) | Head (m) |
|---|---|
| 200 | 25.5 |
| 250 | 24.5 |
| 300 | 23 |
| 350 | 22 |
| 400 | 20 |
| 450 | 19 |
| 500 | 18 |
Dimensions & weight
| Code | Description | Value |
|---|---|---|
| DN | flange bore | 200 mm |
| D | flange outer diameter | 340 mm |
| D1 | bolt circle | 295 mm |
| D2 | raised face | 266 mm |
| n | flange bolt holes | 8 |
| d1 | flange bolt-hole diameter | 23 mm |
| H2 | H2 | 723.8 mm |
| A | A | 716 mm |
| A1 | A1 | 635 mm |
| B | B | 304.8 mm |
| B1 | B1 | 101.6 mm |
| L2 | L2 | 407.1 mm |
| d2 | foot bolt-hole diameter | 24 mm |
| H3 | H3 | 330.2 mm |
| L3 | L3 | 170 mm |
| d | shaft diameter | 48 mm |
| H | overall height, bare pump | 989 mm |
| Am | Am | 716 mm |
| H4 | H4 | 1069.3 mm |
| L | overall length, bare pump | 1023 mm |
| L4 | L4 | 412.8 mm |
| E1 | E1 | 0 mm |
| E2 | E2 | 0 mm |
| belt_Ad | Belt-driven set — Ad | 549 mm |
| belt_Ld1 | Belt-driven set — Ld1 | 150 mm |
| belt_Ld2 | Belt-driven set — Ld2 | 1150 mm |
| belt_d | Belt-driven set — d | 24 mm |
| belt_H11 | Belt-driven set — H11 | 924 mm |
| belt_H31 | Belt-driven set — H31 | 530.2 mm |
| belt_H41 | Belt-driven set — H41 | 1269.3 mm |
| belt_L | Belt-driven set — L | 735 mm |
| belt_Ld | Belt-driven set — Ld | 1465 mm |
| belt_K | Belt-driven set — K | 1054 mm |
| belt_Hm | Belt-driven set — Hm | 1270 mm |
| belt_Am | Belt-driven set — Am | 610 mm |
| belt_HD | Belt-driven set — HD | 820 mm |
| belt_E | Belt-driven set — E | 80.2 mm |
| — | Net weight | 655 kg |