SP (self-priming sewage)
Variable-speed non-clogging self-priming sewage pumps, 2–10 inch
Back-pull-out self-priming sewage pumps with a semi-open non-clogging impeller, built for municipal and industrial sewage, drainage and construction-site dewatering. Each size is offered at many speeds: starred speeds couple directly to a standard YE2 motor, others use a triangle-belt drive. The pump sits beside the sump with only the suction pipe in the liquid; fill it with water for the first start.
- 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
- Liquid 0–40 °C, pH 5–9, density up to 1.2 kg/dm³

CNP-S-000027- Flow
- 10–750 m³/h
- Head
- up to 38 m
- Power
- 0.75–90 kW
- Mains
- 50 Hz
- Models
- 65
- Liquid temp.
- 0 to 40 °C liquid; ambient up to 40 °C
Sizes
| Size | Description | Rated flow | Flow range | Max pressure | Motor | Connection | Models |
|---|---|---|---|---|---|---|---|
| SP-2 | Non-clogging self-priming sewage pump, 50 (2") inlet and outlet, 7 speeds | 28 m³/h | 10–45 m³/h | — | 1.1–9.2 kW | Flange DN50, PN0.6MPa / Class 150 lb | 7 |
| SP-3 | Non-clogging self-priming sewage pump, 80 (3") inlet and outlet, 16 speeds | 53.8 m³/h | 10–100 m³/h | — | 0.75–18.5 kW | Flange DN80, PN0.6MPa / Class 150 lb | 16 |
| SP-4 | Non-clogging self-priming sewage pump, 100 (4") inlet and outlet, 14 speeds | 82.5 m³/h | 20–160 m³/h | — | 1.5–30 kW | Flange DN100, PN1.0MPa / Class 150 lb | 14 |
| SP-6 | Non-clogging self-priming sewage pump, 150 (6") inlet and outlet, 10 speeds | 190 m³/h | 50–300 m³/h | — | 3–37 kW | Flange DN150, PN1.0MPa / Class 150 lb | 10 |
| SP-8 | Non-clogging self-priming sewage pump, 200 (8") inlet and outlet, 9 speeds | 320 m³/h | 100–580 m³/h | — | 7.5–75 kW | Flange DN200, PN1.0MPa / Class 150 lb | 9 |
| SP-10 | Non-clogging self-priming sewage pump, 250 (10") inlet and outlet, 9 speeds | 450 m³/h | 200–750 m³/h | — | 11–90 kW | Flange DN250, PN1.6MPa/ Class 150 lb | 9 |
Models
Filter by duty point, mains frequency or size. Click a model for its performance curve and data.
| Model | Size | Stages | Hz | Motor kW | Flow m³/h | Head m | rpm | kg | |
|---|---|---|---|---|---|---|---|---|---|
| SP-2(1150) | SP-2 | — | 50 | 1.1 | 10–20 | 3.5–5.1 | 1150 | 99 | CurvePDF |
| SP-2(1450) | SP-2 | — | 50 | 1.5 | 10–25 | 5.8–8.4 | 1450 | 99 | CurvePDF |
| SP-2(1750) | SP-2 | — | 50 | 3 | 10–30 | 8.5–12.6 | 1750 | 99 | CurvePDF |
| SP-2(2050) | SP-2 | — | 50 | 4 | 10–35 | 11.6–17.9 | 2050 | 99 | CurvePDF |
| SP-2(2350) | SP-2 | — | 50 | 7.5 | 12.5–40 | 15.3–23.2 | 2350 | 99 | CurvePDF |
| SP-2(2650) | SP-2 | — | 50 | 7.5 | 12.5–45 | 19.4–30.1 | 2650 | 99 | CurvePDF |
| SP-2(2900) | SP-2 | — | 50 | 9.2 | 15–45 | 25.3–35.6 | 2900 | 99 | CurvePDF |
| SP-3(650) | SP-3 | — | 50 | 0.75 | 10–30 | 2–2.9 | 650 | 190 | CurvePDF |
| SP-3(750) | SP-3 | — | 50 | 1.5 | 10–40 | 2.3–3.9 | 750 | 190 | CurvePDF |
| SP-3(850) | SP-3 | — | 50 | 1.5 | 10–40 | 3.4–5.2 | 850 | 190 | CurvePDF |
| SP-3(950) | SP-3 | — | 50 | 1.5 | 10–50 | 3.8–6.4 | 950 | 190 | CurvePDF |
| SP-3(1050) | SP-3 | — | 50 | 3 | 10–60 | 4.3–7.9 | 1050 | 190 | CurvePDF |
| SP-3(1150) | SP-3 | — | 50 | 4 | 10–60 | 5.6–9.7 | 1150 | 190 | CurvePDF |
| SP-3(1250) | SP-3 | — | 50 | 4 | 10–70 | 6.2–11.3 | 1250 | 190 | CurvePDF |
| SP-3(1350) | SP-3 | — | 50 | 5.5 | 20–70 | 7.7–12.6 | 1350 | 190 | CurvePDF |
| SP-3(1450) | SP-3 | — | 50 | 5.5 | 20–80 | 8.3–14.7 | 1450 | 190 | CurvePDF |
| SP-3(1550) | SP-3 | — | 50 | 7.5 | 20–90 | 9.1–16.8 | 1550 | 190 | CurvePDF |
| SP-3(1650) | SP-3 | — | 50 | 11 | 20–90 | 11.1–19.3 | 1650 | 190 | CurvePDF |
| SP-3(1750) | SP-3 | — | 50 | 11 | 30–100 | 11.8–20.9 | 1750 | 190 | CurvePDF |
| SP-3(1850) | SP-3 | — | 50 | 15 | 30–100 | 14–23.5 | 1850 | 190 | CurvePDF |
| SP-3(1950) | SP-3 | — | 50 | 15 | 30–100 | 16.4–26.2 | 1950 | 190 | CurvePDF |
| SP-3(2050) | SP-3 | — | 50 | 18.5 | 30–100 | 18.9–29 | 2050 | 190 | CurvePDF |
| SP-3(2150) | SP-3 | — | 50 | 18.5 | 30–100 | 21.7–32.1 | 2150 | 190 | CurvePDF |
| SP-4(650) | SP-4 | — | 50 | 1.5 | 20–48 | 2.6–3.8 | 650 | 275 | CurvePDF |
| SP-4(750) | SP-4 | — | 50 | 1.5 | 32–64 | 3–4.5 | 750 | 275 | CurvePDF |
| SP-4(850) | SP-4 | — | 50 | 2.2 | 32–80 | 3.5–6 | 850 | 275 | CurvePDF |
| SP-4(950) | SP-4 | — | 50 | 3 | 32–80 | 5–7.5 | 950 | 275 | CurvePDF |
| SP-4(1050) | SP-4 | — | 50 | 5.5 | 32–96 | 5.9–9.7 | 1050 | 275 | CurvePDF |
| SP-4(1150) | SP-4 | — | 50 | 5.5 | 32–96 | 7.6–11.9 | 1150 | 275 | CurvePDF |
| SP-4(1250) | SP-4 | — | 50 | 7.5 | 32–112 | 8.4–14.2 | 1250 | 275 | CurvePDF |
| SP-4(1350) | SP-4 | — | 50 | 11 | 32–112 | 10.5–16.7 | 1350 | 275 | CurvePDF |
| SP-4(1450) | SP-4 | — | 50 | 11 | 48–128 | 11.5–18 | 1450 | 275 | CurvePDF |
| SP-4(1550) | SP-4 | — | 50 | 15 | 48–144 | 12.6–20.9 | 1550 | 275 | CurvePDF |
| SP-4(1650) | SP-4 | — | 50 | 18.5 | 48–144 | 15–24.3 | 1650 | 275 | CurvePDF |
| SP-4(1750) | SP-4 | — | 50 | 22 | 48–160 | 16.2–27.6 | 1750 | 275 | CurvePDF |
| SP-4(1850) | SP-4 | — | 50 | 30 | 48–160 | 18.7–31 | 1850 | 275 | CurvePDF |
| SP-4(1950) | SP-4 | — | 50 | 30 | 48–160 | 21.7–34.5 | 1950 | 275 | CurvePDF |
| SP-6(650) | SP-6 | — | 50 | 3 | 50–120 | 3.1–5 | 650 | 438 | CurvePDF |
| SP-6(750) | SP-6 | — | 50 | 4 | 80–150 | 3.6–6 | 750 | 438 | CurvePDF |
| SP-6(850) | SP-6 | — | 50 | 7.5 | 80–150 | 5.5–8 | 850 | 438 | CurvePDF |
| SP-6(950) | SP-6 | — | 50 | 7.5 | 80–180 | 6.8–11 | 950 | 438 | CurvePDF |
| SP-6(1050) | SP-6 | — | 50 | 11 | 80–210 | 7.5–13 | 1050 | 438 | CurvePDF |
| SP-6(1150) | SP-6 | — | 50 | 15 | 80–240 | 8–16 | 1150 | 438 | CurvePDF |
| SP-6(1250) | SP-6 | — | 50 | 22 | 120–240 | 10.5–17 | 1250 | 438 | CurvePDF |
| SP-6(1350) | SP-6 | — | 50 | 30 | 120–270 | 12–20.5 | 1350 | 438 | CurvePDF |
| SP-6(1450) | SP-6 | — | 50 | 30 | 120–300 | 13–24 | 1450 | 438 | CurvePDF |
| SP-6(1550) | SP-6 | — | 50 | 37 | 120–300 | 16.5–28 | 1550 | 438 | CurvePDF |
| SP-8(650) | SP-8 | — | 50 | 7.5 | 100–250 | 5–7 | 650 | 655 | CurvePDF |
| SP-8(750) | SP-8 | — | 50 | 11 | 150–300 | 6.5–8.8 | 750 | 655 | CurvePDF |
| SP-8(850) | SP-8 | — | 50 | 15 | 150–350 | 8–11.5 | 850 | 655 | CurvePDF |
| SP-8(950) | SP-8 | — | 50 | 22 | 150–350 | 11–15 | 950 | 655 | CurvePDF |
| SP-8(1050) | SP-8 | — | 50 | 30 | 150–400 | 13–18.5 | 1050 | 655 | CurvePDF |
| SP-8(1150) | SP-8 | — | 50 | 37 | 200–450 | 15.5–21.5 | 1150 | 655 | CurvePDF |
| SP-8(1250) | SP-8 | — | 50 | 55 | 200–500 | 18–25.5 | 1250 | 655 | CurvePDF |
| SP-8(1350) | SP-8 | — | 50 | 75 | 200–500 | 22–30.5 | 1350 | 655 | CurvePDF |
| SP-8(1450) | SP-8 | — | 50 | 75 | 200–580 | 23–35.5 | 1450 | 655 | CurvePDF |
| SP-10(650) | SP-10 | — | 50 | 11 | 200–300 | 6.5–7 | 650 | 705 | CurvePDF |
| SP-10(750) | SP-10 | — | 50 | 15 | 200–400 | 6–10 | 750 | 705 | CurvePDF |
| SP-10(850) | SP-10 | — | 50 | 22 | 200–450 | 8–13 | 850 | 705 | CurvePDF |
| SP-10(950) | SP-10 | — | 50 | 30 | 200–500 | 10–16 | 950 | 705 | CurvePDF |
| SP-10(1050) | SP-10 | — | 50 | 45 | 200–550 | 12.5–20 | 1050 | 705 | CurvePDF |
| SP-10(1150) | SP-10 | — | 50 | 55 | 300–600 | 15–23 | 1150 | 705 | CurvePDF |
| SP-10(1250) | SP-10 | — | 50 | 75 | 300–650 | 18–27.5 | 1250 | 705 | CurvePDF |
| SP-10(1350) | SP-10 | — | 50 | 90 | 300–700 | 21.5–32.5 | 1350 | 705 | CurvePDF |
| SP-10(1450) | SP-10 | — | 50 | 90 | 300–750 | 24.5–38 | 1450 | 705 | CurvePDF |
Performance range
Every model of the SP (self-priming sewage) range on one chart: each line is the performance curve of one model. Click a line or dot to open that model with its full data.
- SP-2
- SP-3
- SP-4
- SP-6
- SP-8
- SP-10
Logarithmic scales. Published catalogue data for clean water; the correct model for your duty is confirmed by our engineers.
Dimensions & weight
Net weight and the main dimensions of each model, in millimetres, from the catalogue. Open a model for the labelled dimension drawing.
| Model | Hz | Weight (kg) | DN | D | D1 | D2 | n | d1 | H2 |
|---|---|---|---|---|---|---|---|---|---|
| SP-2(1150) | 50 | 99 | 50 | 140 | 110 | 90 | 4 | 14 | 318 |
| SP-2(1450) | 50 | 99 | 50 | 140 | 110 | 90 | 4 | 14 | 318 |
| SP-2(1750) | 50 | 99 | 50 | 140 | 110 | 90 | 4 | 14 | 318 |
| SP-2(2050) | 50 | 99 | 50 | 140 | 110 | 90 | 4 | 14 | 318 |
| SP-2(2350) | 50 | 99 | 50 | 140 | 110 | 90 | 4 | 14 | 318 |
| SP-2(2650) | 50 | 99 | 50 | 140 | 110 | 90 | 4 | 14 | 318 |
| SP-2(2900) | 50 | 99 | 50 | 140 | 110 | 90 | 4 | 14 | 318 |
| SP-3(650) | 50 | 190 | 80 | 190 | 150 | 127 | 4 | 19 | 432 |
| SP-3(750) | 50 | 190 | 80 | 190 | 150 | 127 | 4 | 19 | 432 |
| SP-3(850) | 50 | 190 | 80 | 190 | 150 | 127 | 4 | 19 | 432 |
| SP-3(950) | 50 | 190 | 80 | 190 | 150 | 127 | 4 | 19 | 432 |
| SP-3(1050) | 50 | 190 | 80 | 190 | 150 | 127 | 4 | 19 | 432 |
| SP-3(1150) | 50 | 190 | 80 | 190 | 150 | 127 | 4 | 19 | 432 |
| SP-3(1250) | 50 | 190 | 80 | 190 | 150 | 127 | 4 | 19 | 432 |
| SP-3(1350) | 50 | 190 | 80 | 190 | 150 | 127 | 4 | 19 | 432 |
| SP-3(1450) | 50 | 190 | 80 | 190 | 150 | 127 | 4 | 19 | 432 |
| SP-3(1550) | 50 | 190 | 80 | 190 | 150 | 127 | 4 | 19 | 432 |
| SP-3(1650) | 50 | 190 | 80 | 190 | 150 | 127 | 4 | 19 | 432 |
| SP-3(1750) | 50 | 190 | 80 | 190 | 150 | 127 | 4 | 19 | 432 |
| SP-3(1850) | 50 | 190 | 80 | 190 | 150 | 127 | 4 | 19 | 432 |
| SP-3(1950) | 50 | 190 | 80 | 190 | 150 | 127 | 4 | 19 | 432 |
| SP-3(2050) | 50 | 190 | 80 | 190 | 150 | 127 | 4 | 19 | 432 |
| SP-3(2150) | 50 | 190 | 80 | 190 | 150 | 127 | 4 | 19 | 432 |
| SP-4(650) | 50 | 275 | 100 | 229 | 180 | 158 | 8 | 19 | 495 |
| SP-4(750) | 50 | 275 | 100 | 229 | 180 | 158 | 8 | 19 | 495 |
| SP-4(850) | 50 | 275 | 100 | 229 | 180 | 158 | 8 | 19 | 495 |
| SP-4(950) | 50 | 275 | 100 | 229 | 180 | 158 | 8 | 19 | 495 |
| SP-4(1050) | 50 | 275 | 100 | 229 | 180 | 158 | 8 | 19 | 495 |
| SP-4(1150) | 50 | 275 | 100 | 229 | 180 | 158 | 8 | 19 | 495 |
| SP-4(1250) | 50 | 275 | 100 | 229 | 180 | 158 | 8 | 19 | 495 |
| SP-4(1350) | 50 | 275 | 100 | 229 | 180 | 158 | 8 | 19 | 495 |
| SP-4(1450) | 50 | 275 | 100 | 229 | 180 | 158 | 8 | 19 | 495 |
| SP-4(1550) | 50 | 275 | 100 | 229 | 180 | 158 | 8 | 19 | 495 |
| SP-4(1650) | 50 | 275 | 100 | 229 | 180 | 158 | 8 | 19 | 495 |
| SP-4(1750) | 50 | 275 | 100 | 229 | 180 | 158 | 8 | 19 | 495 |
| SP-4(1850) | 50 | 275 | 100 | 229 | 180 | 158 | 8 | 19 | 495 |
| SP-4(1950) | 50 | 275 | 100 | 229 | 180 | 158 | 8 | 19 | 495 |
| SP-6(650) | 50 | 438 | 150 | 285 | 240 | 212 | 8 | 23 | 574 |
| SP-6(750) | 50 | 438 | 150 | 285 | 240 | 212 | 8 | 23 | 574 |
| SP-6(850) | 50 | 438 | 150 | 285 | 240 | 212 | 8 | 23 | 574 |
| SP-6(950) | 50 | 438 | 150 | 285 | 240 | 212 | 8 | 23 | 574 |
| SP-6(1050) | 50 | 438 | 150 | 285 | 240 | 212 | 8 | 23 | 574 |
| SP-6(1150) | 50 | 438 | 150 | 285 | 240 | 212 | 8 | 23 | 574 |
| SP-6(1250) | 50 | 438 | 150 | 285 | 240 | 212 | 8 | 23 | 574 |
| SP-6(1350) | 50 | 438 | 150 | 285 | 240 | 212 | 8 | 23 | 574 |
| SP-6(1450) | 50 | 438 | 150 | 285 | 240 | 212 | 8 | 23 | 574 |
| SP-6(1550) | 50 | 438 | 150 | 285 | 240 | 212 | 8 | 23 | 574 |
| SP-8(650) | 50 | 655 | 200 | 340 | 295 | 266 | 8 | 23 | 724 |
| SP-8(750) | 50 | 655 | 200 | 340 | 295 | 266 | 8 | 23 | 724 |
| SP-8(850) | 50 | 655 | 200 | 340 | 295 | 266 | 8 | 23 | 724 |
| SP-8(950) | 50 | 655 | 200 | 340 | 295 | 266 | 8 | 23 | 724 |
| SP-8(1050) | 50 | 655 | 200 | 340 | 295 | 266 | 8 | 23 | 724 |
| SP-8(1150) | 50 | 655 | 200 | 340 | 295 | 266 | 8 | 23 | 724 |
| SP-8(1250) | 50 | 655 | 200 | 340 | 295 | 266 | 8 | 23 | 724 |
| SP-8(1350) | 50 | 655 | 200 | 340 | 295 | 266 | 8 | 23 | 724 |
| SP-8(1450) | 50 | 655 | 200 | 340 | 295 | 266 | 8 | 23 | 724 |
| SP-10(650) | 50 | 705 | 250 | 405 | 355 | 320 | 12 | 26 | 640 |
| SP-10(750) | 50 | 705 | 250 | 405 | 355 | 320 | 12 | 26 | 640 |
| SP-10(850) | 50 | 705 | 250 | 405 | 355 | 320 | 12 | 26 | 640 |
| SP-10(950) | 50 | 705 | 250 | 405 | 355 | 320 | 12 | 26 | 640 |
| SP-10(1050) | 50 | 705 | 250 | 405 | 355 | 320 | 12 | 26 | 640 |
| SP-10(1150) | 50 | 705 | 250 | 405 | 355 | 320 | 12 | 26 | 640 |
| SP-10(1250) | 50 | 705 | 250 | 405 | 355 | 320 | 12 | 26 | 640 |
| SP-10(1350) | 50 | 705 | 250 | 405 | 355 | 320 | 12 | 26 | 640 |
| SP-10(1450) | 50 | 705 | 250 | 405 | 355 | 320 | 12 | 26 | 640 |
Spare parts for SP (self-priming sewage)
Parts list of the series with the material of each part. To order, send the model code and the part you need.
| No. | Part | Material | Standard | Applies to | |
|---|---|---|---|---|---|
| 1 | Suction inlet | Cast iron | — | All sizes | |
| 2 | Flap valve | NBR + carbon steel | — | All sizes | |
| 3 | Infusion cover | Cast iron | — | All sizes | |
| 4 | Discharge outlet | Cast iron | — | All sizes | |
| 5 | End cover | Cast iron | — | All sizes | |
| 6 | Wear plate | Carbon steel | — | All sizes | |
| 7 | Impeller | DCI (ductile cast iron) or cast steel | — | All sizes | |
| 8 | Volute | Cast iron | — | All sizes | |
| 9 | Impeller cover | Cast iron | — | All sizes | |
| 10 | Mechanical seal | WC / WC | — | All sizes | |
| 11 | O-ring | NBR / FPM | — | All sizes | |
| 12 | Shaft | Stainless steel | — | All sizes | |
| 13 | Bearing body | Cast iron | — | All sizes | |
| 14 | Bearing cover | Cast iron | — | All sizes | |
| 15 | Inlet cover (SP-10) | Cast iron | — | All sizes | |
| 16 | Inlet (SP-10) | Cast iron | — | All sizes |
Technical data
Liquid temperature
- 0 to 40 °C liquid; ambient up to 40 °C
Ambient conditions
- Up to 40 °C, altitude up to 1000 m
Motor
- Direct-coupled YE2 B3 standard motor or belt drive
Supply voltage
- 3 x 380 V
Typical applications
- Rain water and common sewage; municipal drainage, construction sites, civil-defence drainage
- Industrial sewage: light industry, paper, textile, food, chemical, electric utility, mines
- Sewage and deposit handling in water purification, tanning, slaughterhouse, fish breeding, wine and sugar industry
- Not strongly corrosive but seriously polluted sewage
Pumped liquid
- Non-flammable, non-explosive liquid at 0–40 °C, density up to 1.2 × 10³ kg/m³, pH 5–9, solids up to 2 % by volume; maximum grain SP-2 38 mm, SP-3 63 mm, SP-4/6/8/10 76 mm. Contact CNP if the specific gravity exceeds 1.2.
Data basis
- Clean water at normal temperature, measured at sea level with the minimum suction head; variable speed (650–2900 rpm by size); speeds marked * suit a YE2 B3 standard motor, other speeds a triangle-belt drive
Performance values are taken from the published CNP catalogue data. Our engineers confirm the final selection for your liquid, temperature, supply and site before quoting.



