NSZ (pool, horizontal)
Horizontal swimming-pool circulation pumps, large flows
Horizontal swimming-pool circulation pumps for large flows. Used to circulate and filter pool water in big commercial pools, water parks and water features, and the series also handles hotter water than the other pool pumps. Choose the model by the flow you need to turn the pool over and the head of your filter and pipework.
- Built for large circulation flows
- Handles clean pool water up to 100 °C (other pool series up to 50 °C)
- Full dimension set published for every model
- Flow and head listed for each model; send your pool volume and we confirm the size
CNP-S-000053- Flow
- 5–160 m³/h
- Head
- up to 35 m
- Power
- 2.2–15 kW
- Mains
- 50 Hz
- Models
- 8
- Liquid temp.
- 5 to 50 °C (NSZ: -20 to 100 °C)
Sizes
| Size | Description | Rated flow | Flow range | Max pressure | Motor | Connection | Models |
|---|---|---|---|---|---|---|---|
| NSZ300 | Stainless steel horizontal swimming pool pump | 20 m³/h | 5–35 m³/h | 10 bar | 2.2 kW | Flange (NSZ) or union joint (metric GB or inch ANSI) | 1 |
| NSZ400 | Stainless steel horizontal swimming pool pump | 20 m³/h | 5–35 m³/h | 10 bar | 3 kW | Flange (NSZ) or union joint (metric GB or inch ANSI) | 1 |
| NSZ550 | Stainless steel horizontal swimming pool pump | 30 m³/h | 5–60 m³/h | 10 bar | 4 kW | Flange (NSZ) or union joint (metric GB or inch ANSI) | 1 |
| NSZ750 | Stainless steel horizontal swimming pool pump | 35 m³/h | 5–70 m³/h | 10 bar | 5.5 kW | Flange (NSZ) or union joint (metric GB or inch ANSI) | 1 |
| NSZ1000 | Stainless steel horizontal swimming pool pump | 80 m³/h | 20–120 m³/h | 10 bar | 7.5 kW | Flange (NSZ) or union joint (metric GB or inch ANSI) | 1 |
| NSZ1250 | Stainless steel horizontal swimming pool pump | 80 m³/h | 20–120 m³/h | 10 bar | 9.2 kW | Flange (NSZ) or union joint (metric GB or inch ANSI) | 1 |
| NSZ1500 | Stainless steel horizontal swimming pool pump | 100 m³/h | 20–160 m³/h | 10 bar | 11 kW | Flange (NSZ) or union joint (metric GB or inch ANSI) | 1 |
| NSZ2000 | Stainless steel horizontal swimming pool pump | 100 m³/h | 20–160 m³/h | 10 bar | 15 kW | Flange (NSZ) or union joint (metric GB or inch ANSI) | 1 |
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 | |
|---|---|---|---|---|---|---|---|---|---|
| NSZ300 | NSZ300 | — | 50 | 2.2 | 5–35 | 13.6–21.1 | 2900 | — | CurvePDF |
| NSZ400 | NSZ400 | — | 50 | 3 | 5–35 | 20–26.1 | 2900 | — | CurvePDF |
| NSZ550 | NSZ550 | — | 50 | 4 | 5–60 | 13.6–25.5 | 2900 | — | CurvePDF |
| NSZ750 | NSZ750 | — | 50 | 5.5 | 5–70 | 18.2–29.6 | 2900 | — | CurvePDF |
| NSZ1000 | NSZ1000 | — | 50 | 7.5 | 20–120 | 6.9–26 | 2900 | — | CurvePDF |
| NSZ1250 | NSZ1250 | — | 50 | 9.2 | 20–120 | 14.8–29.5 | 2900 | — | CurvePDF |
| NSZ1500 | NSZ1500 | — | 50 | 11 | 20–160 | 9.4–25.5 | 2950 | — | CurvePDF |
| NSZ2000 | NSZ2000 | — | 50 | 15 | 20–160 | 17.6–34.5 | 2950 | — | CurvePDF |
Performance range
Every model of the NSZ (pool, horizontal) 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.
- NSZ300
- NSZ400
- NSZ550
- NSZ750
- NSZ1000
- NSZ1250
- NSZ1500
- NSZ2000
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.
Spare parts for NSZ (pool, horizontal)
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 | |
|---|---|---|---|---|---|
| Mechanical seal | Graphite / ceramic | — | All sizes | ||
| Pump body, impeller, diffuser | Stainless steel AISI 304 | — | All sizes | ||
| Rubber parts | NBR | — | All sizes | ||
| Shaft | Stainless steel AISI 304 | — | All sizes |
Technical data
Liquid temperature
- 5 to 50 °C (NSZ: -20 to 100 °C)
Ambient conditions
- Up to 40 °C
Motor
- Two-pole motor; see each model
Supply voltage
- 220/380 V
- 380 V
Typical applications
- Domestic and commercial swimming pools
- Water parks and water landscape gardening
- Mariculture and SPA
Pumped liquid
- Clean swimming-pool water at 5–50 °C. Maximum working pressure 0.3 MPa (3 bar) for the plastic-body pumps, 10 bar for the stainless NSZ.
Data basis
- 50 Hz, 20 °C air-free water, kinematic viscosity 1 mm²/s; speed 2850–2950 rpm at 50 Hz, 3450 rpm at 60 Hz; curve tolerance ISO 9906:2012 Grade 3B (NSZ)
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.
