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SKU: 93209308
Grundfos NB 50-200/171 Cast Iron 1.1 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Conditioned liquid circulation loops and primary plant headers feature the Grundfos NB 50-200/171 centrifugal pump. Driven by an electric 1.1 kW motor assembly, the pump incorporates an axial DN 65 suction port and a radial DN 50 discharge connection.
Fluid displacement capacity achieves 527 L/Min rated volume with a developed head of 8.458 m. The pump housing is cast in EN-GJL-250 iron with cataphoretic electrocoating. Fluid displacement is driven by a stainless steel impeller and a BQQE mechanical shaft seal. Net product weight measures 66 kg.
Hooked into a 415 V three-phase line, the 1.1 kW drive draws 2.34 Amps rated full-load current. Operational limits permit media temperatures from -25°C to 120°C under working pressures up to 16 bar. Flanged pipe connections measure DN 65 on the inlet and DN 50 on the outlet.
Physical enclosure protection achieves an IP55 rating, utilizing Class F thermal insulation. Standard IEC electric drive design requires external motor overload protection. The back-pull-out structural layout permits complete motor and rotating assembly extraction without disconnecting piping headers.
Features
- Internal wear rings retain hydraulic clearance tolerances throughout long service cycles.
- Solid stub shaft supported by sealed ball bearings carries axial and radial loads.
- Standard PN16 flanged port interfaces align with EN1092-2 heating and cooling headers.
- Totally enclosed fan cooled IEC motor rated for S1 duty cycles in ambient environments up to 40°C.
- Service-friendly back-pull-out layout enables rotating element servicing without removing pipework.
- Balanced impeller geometry and shaft construction reduce operational vibration throughout duty range.
- Volute casing design incorporates integral base feet for direct mounting to concrete plinths.
SPECIFICATIONS
| Max Flow | 527 L/Min |
| Max Head | 8 m |
| Power | 1.1 kW / 415v |
| Rated Current | 2.34 Amps |
| Suitable For | Boiler Plant & Thermal Transfer |
| Body Material | Cast Iron |
| Liquid Temperature | -25°C to 120°C |
| Inlet Size | 65 mm |
| Outlet Size | 50 mm |
| Warranty | 24 Months |
Warranty & Returns
All products supplied by Foundation Pumps are covered by a minimum 12-month warranty unless otherwise stated. Some brands may offer longer manufacturer warranties. Warranty covers manufacturing defects, faulty materials and workmanship under normal use.
- Products must be installed correctly and in accordance with the manufacturer’s instructions.
- Warranty does not cover incorrect installation, misuse, dry running, normal wear and tear, unauthorised repairs or damage caused by external factors.
- Proof of purchase, photos, videos and installation details may be requested when assessing a warranty claim.
- The customer is responsible for returning the product to Foundation Pumps or the nominated service centre unless otherwise agreed.
- Removal, reinstallation, labour and associated site costs are generally the customer’s responsibility unless required under Australian Consumer Law.
- Change-of-mind returns may be accepted within 30 days provided the product is unused, uninstalled and returned in its original packaging.
- Customers are responsible for return freight costs for change-of-mind returns.
- Restocking fees may apply to special-order, bulky or non-stocked products.
- Used, installed or specially ordered products may not be eligible for change-of-mind returns.
- If a product arrives damaged or faulty, please contact Foundation Pumps as soon as possible so we can assist with the appropriate repair, replacement or refund.
Your rights under Australian Consumer Law are not affected.
What electrical service and power capacity operate this pump motor?
Three-phase power at 415 V drives the Grundfos NB 50-200/171, utilizing a 1.1 kW motor drawing 2.34 Amps with IP55 protection.
Can the motor and rotating elements be removed while the casing stays piped in?
Plant maintenance on the NB 50-200/171 leaves facility pipework connected, utilizing a back-pull-out layout for fast mechanical servicing.
What connection flange sizes and port orientations connect this pump to facility pipework?
Standard PN16 flanged connections on the NB-50-200-171 include an axial 65 mm suction intake and a radial 50 mm discharge port.
How much fluid movement and pressure elevation does this pump deliver?
Delivering up to 527 L/Min in volumetric flow and 8.458 m in dynamic head, the NB 50 200 171 adapts across its curve.
What mechanical seal type and internal clearances prevent internal liquid leakage on this pump?
Shaft sealing on the NB/50/200/171 is provided by a BQQE mechanical seal alongside replaceable wear rings that protect internal hydraulic geometry.
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