NK 250-450/401 AA2F1AESBAQEYW3
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Grundfos 98318692 Endsuction long coupled single stage NK 250-450/401 AA2F1AESBAQEYW3
Product code: 98318692
EAN Number: 5711492950791
Non-self-priming, single-stage, centrifugal pump designed according to ISO 5199 with dimensions and rated performance according to EN 733. Flanges are PN 10 with dimensions according to EN 1092-2. The pump has an axial suction port, a radial discharge port and horizontal shaft. It is of the back pull-out design enabling removal of the motor, coupling, bearing bracket and impeller without disturbing the pump housing or pipework. The unbalanced rubber bellows seal is according to DIN EN 12756. The pump is fitted with a foot-mounted, fan-cooled asynchronous motor. Pump and motor are mounted on a common base frame.
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| Product information | EAN number | 5711492950791 |
| Product No | 98318692 | |
| Flow rate | Actual impeller diameter | 401 mm |
| Bearing design | Standard | |
| Code Ausführung | A2 | |
| Code for shaft seal | BAQE | |
| Curve tolerance | ISO9906:2012 3B | |
| Mechanical seal type | Single | |
| Nominal impeller diameter | 450 | |
| Primary shaft seal | BAQE | |
| Pump speed on which pump data are based | 1490 1/min | |
| Pump version | A2 | |
| Pump with motor (Yes/No) | yes | |
| Rated flow | 844.9 m³/h | |
| Rated head | 51.74 m | |
| Shaft diameter | 60 mm | |
| Electrical data | Bearing insulation type N-end | N |
| Built-in motor protection | PTC | |
| Cos phi - power factor | 0.85 | |
| Enclosure class (IEC 34-5) | IP55 | |
| IE Efficiency class | IE4 | |
| IE efficiency | IE4 96,6% | |
| Insulation class (IEC 85) | F | |
| Mains frequency | 50 Hz | |
| Motor No | 92910053 | |
| Motor efficiency at 1/2 load | 96.6 % | |
| Motor efficiency at 3/4 load | 96.8 % | |
| Motor efficiency at full load | 96.6 % | |
| Motor type | INNOMOTICS | |
| Number of poles | 4 | |
| Rated current | 280 A | |
| Rated power - P2 | 160 kW | |
| Rated speed | 1490 1/min | |
| Rated voltage | 3 x 380-420D/660-725Y V | |
| Starting current | 790 % | |
| Installation | Base frame design | EN/ISO |
| Code Anschl. Art | F | |
| Code for base frame | 10D | |
| Connect code | F | |
| Coupling type | Flexible w/spacer | |
| Grouting (Yes/No) | N | |
| Maximum ambient temperature | 55 °C | |
| Maximum operating pressure | 10 bar | |
| Pipe connection standard | EN 1092-2 | |
| Pressure rating for connection | PN 10 | |
| Size of inlet connection | DN 300 | |
| Size of outlet connection | DN 250 | |
| Type of inlet connection | DIN | |
| Type of outlet connection | DIN | |
| Fluid | Density | 998.2 kg/m³ |
| Liquid temperature range | 0 .. 120 °C | |
| Selected liquid temperature | 20 °C | |
| Materials | Code Material | A |
| Code for rubber | E | |
| Elastomere GLRD | E | |
| IMPELLER_MATR_QLTY_EN | EN-GJL-200 | |
| IMPELLER_MATR_QUALITY_ASTM | ASTM class 30 | |
| Impeller | Cast iron | |
| Internal pump house coating | CED | |
| Material code | A | |
| PH_MATR_QUALITY_ASTM | ASTM class 35 | |
| PH_MATR_QUALITY_EN | EN-GJL-250 | |
| PUMP_SHAFT_MATR_QLTY_ASTM | AISI 304 | |
| Pump housing | Cast iron | |
| Shaft | Stainless steel | |
| Shaft | EN 1.4301 | |
| WEAR_RING_MATR_QLTY_EN | CuZn34Mn3AI2Fe1-C | |
| Wear ring | Brass | |
| Control | Frequency converter | None |
| Pressure sensor | N | |
| Other information | Gross weight | 2330 kg |
| Herkunftsland | ||
| Language on pump nameplate | GB | |
| Minimum efficiency index, MEI ≥ | 0.68 | |
| Net weight | 2220 kg | |
| Shipping volume | 3.75 m³ | |
| Zolltarif Nr. | 84137059 |