Grundfos NB 125-500/447 AAF2KESBQQEVW3
Product ID: 98308690
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Grundfos NB 125-500/447 AAF2KESBQQEVW3
Grundfos NB 125-500/447 AAF2KESBQQEVW3
Non-self-priming, single-stage, centrifugal volute pump designed according to ISO 5199 with dimensions and rated performance according to EN 733 (10 bar). Flanges are PN 16 with dimensions according to EN 1092-1. The pump has an axial suction port, radial discharge port, horizontal shaft and a back pull-out design enabling removal of the motor, motor stool, cover and impeller without disturbing the pump housing or pipework. The unbalanced rubber bellows seal is according to DIN EN 12756. The
| Controls: | |
| Frequency converter: | None |
| Pressure sensor: | N |
| Liquid: | |
| Pumped liquid: | Water |
| Liquid temperature range: | -25 .. 120 °C |
| Selected liquid temperature: | 20 °C |
| Density: | 998.2 kg/m³ |
| Technical: | |
| Pump speed on which pump data are based: | 1490 rpm |
| Rated flow: | 270 m³/h |
| Rated head: | 64.2 m |
| Actual impeller diameter: | 447 mm |
| Nominal impeller diameter: | 500 |
| Shaft seal arrangement: | Single |
| Primary shaft seal: | BQQE |
| Code for shaft seal: | BQQE |
| Curve tolerance: | ISO9906:2012 3B |
| Bearing design: | Standard |
| Materials: | |
| Pump housing: | Stainless steel |
| EN 1.4408 | |
| ASTM CF8M | |
| Wear ring: | Stainless steel |
| EN 1.4517 | |
| ASTM CD4MCuN | |
| Flange: | Cast iron |
| EN-GJS-500-7 | |
| ASTM 70-50-05 | |
| Impeller: | Stainless steel |
| EN 1.4408 | |
| ASTM CF8M | |
| Internal pump house coating: | No coating |
| Shaft: | Stainless steel |
| EN 1.4401 | |
| AISI 316 | |
| Installation: | |
| Maximum ambient temperature: | 55 °C |
| Maximum operating pressure: | 16 bar |
| Pipe connection standard: | EN 1092-1 |
| Size of inlet connection: | DN 150 |
| Size of outlet connection: | DN 125 |
| Pressure rating for connection: | PN 16 |
| Bearing lubrication: | Grease |
| Pump housing with feet (Yes/No): | Yes |
| Support block (Yes/No): | N |
| Electrical data: | |
| Motor type: | INNOMOTICS |
| Rated power - P2: | 75 kW |
| Mains frequency: | 50 Hz |
| Rated voltage: | 3 x 380-420D/660-725Y V |
| Rated current: | 130 A |
| Starting current: | 850 % |
| Cos phi - power factor: | 0.87 |
| Rated speed: | 1490 rpm |
| IE efficiency: | IE4 96% |
| IE Efficiency class: | IE4 |
| Motor efficiency at full load: | 96 % |
| Motor efficiency at 3/4 load: | 96.2 % |
| Motor efficiency at 1/2 load: | 96 % |
| Number of poles: | 4 |
| Enclosure class (IEC 34-5): | IP55 |
| Insulation class (IEC 85): | F |
| Motor No: | 92910079 |
| Bearing insulation type N-end: | N |
| Others: | |
| Minimum efficiency index, MEI ≥: | 0.50 |
| Net weight: | 1020 kg |
| Gross weight: | 1070 kg |
| Shipping volume: | 1.44 m³ |
| Language on pump nameplate: | GB |
Spare Parts
| Part Number | Product Name |
|---|---|
| 97757679 | Spare, O-ring |
| 97757693 | Spare, O-ring |
| 98434945 | Spare, Shaft seal |
Applications
- Commercial air conditioning — Improve user comfort and reduce life-cycle costs with intelligent pumps that integrate easily into your air-based or hydronic cooling system.
- Industrial heating — Solutions for industrial heating applications meet great demands every day from very high temperatures to delicate processes that require extreme precision. There is a high efficiency heat pump from Grundfos for any need.
- Irrigation — Our high-efficiency pumping solutions work seamlessly with modern irrigation systems for agricultural and non-agricultural applications and can operate with on- and off-grid energy sources.
category
- Endsuction close coupled single stageEnd-suction close-coupled single-stage pumps are common in every industrial facility and water treatment plant in the world. Available in both a vertical and horizontal design, the end-suction close-coupled single-stage pumps are easy to install thanks to the compact size and the 90 degree angle from inlet to outlet.