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SKU: 93209374
Grundfos NB 80-250/270 Cast Iron 11 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Central chiller circulation circuits and plant headers feature the Grundfos NB 80-250/270 centrifugal pump. Coupled to a 11 kW motor drive, fluid enters through an axial DN 100 suction port and exits through a radial DN 80 discharge flange.
Volumetric discharge capacity generates approx. 2413 L/Min operational flow with a approx. 26.2 m maximum head limit. Constructed with an EN-GJL-250 cast iron volute protected by cataphoretic electrocoating, internal hydraulics feature a stainless steel impeller and BQQE mechanical shaft seal. Net weight is 218 kg.
Supply voltage of 415 V three-phase powers the drive motor at 22.3 Amps for 11 kW power delivery. Working tolerances accommodate fluid temperatures spanning -25°C to 120°C at pressures reaching 16 bar. Flanged connections feature DN 100 inlet and DN 80 outlet dimensions.
Physical frame sealing satisfies IP55 ingress requirements with Class F motor insulation. Because built-in thermal protection is not included, external motor overload protection must be supplied. Maintenance is streamlined via a back-pull-out arrangement allowing rotating element removal while the casing remains connected to piping.
Features
- 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.
- Internal wear rings retain hydraulic clearance tolerances throughout long service cycles.
SPECIFICATIONS
| Max Flow | 2413 L/Min |
| Max Head | 26.2 m |
| Power | 11 kW / 415v |
| Rated Current | 22.3 Amps |
| Suitable For | District Heating & Cooling Networks |
| Body Material | Cast Iron |
| Liquid Temperature | -25°C to 120°C |
| Inlet Size | 100 mm |
| Outlet Size | 80 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.
How wide is the permissible liquid temperature range for this pump?
System ratings for the Grundfos NB 80-250/270 accommodate fluid temperatures from -25°C to 120°C and maximum operating pressures up to 16 bar.
How much volumetric delivery and dynamic pressure does this pump develop?
Operating capacity on the NB 80-250/270 reaches approx. 2413 L/Min in liquid flow and approx. 26.2 m in dynamic head across duty cycles.
How does this pump maintain fluid containment provide dependable fluid containment along the shaft?
Fluid containment in the NB-80-250-270 is maintained by a BQQE mechanical shaft seal, supported by replaceable wear rings that preserve hydraulic clearances.
What voltage input and operational current are required for this drive?
Powered by a 11 kW electric motor, the NB 80 250 270 connects to a 415 V three-phase feed and draws 22.3 Amps with an IP55 enclosure.
Can maintenance crews inspect internal wetted parts without breaking pipe flanges?
Extracting the rotating assembly on the NB/80/250/270 requires no pipe disconnection, thanks to its back-pull-out maintenance architecture.
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