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SKU: 93209351
Grundfos NB 65-250/270 Cast Iron 7.5 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Institutional cooling stations and central chiller loops rely on the Grundfos NB 65-250/270 centrifugal pump. Driven by an electric 7.5 kW motor assembly, the pump incorporates an axial DN 80 suction port and a radial DN 65 discharge connection.
Liquid movement performance delivers 1263 L/Min rated volume and overcomes up to 22.87 m head. 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 161 kg.
Driven across a 415 V three-phase line, the 7.5 kW motor draws 14.6 Amps operating current. Operational limits permit media temperatures from -25°C to 120°C under working pressures up to 16 bar. Flanged pipe connections measure DN 80 on the inlet and DN 65 on the outlet.
Protective frame engineering satisfies IP55 sealing standards and Class F motor 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
- Volute casing design incorporates integral base feet for direct mounting to concrete plinths.
- 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.
SPECIFICATIONS
| Max Flow | 1263 L/Min |
| Max Head | 22 m |
| Power | 7.5 kW / 415v |
| Rated Current | 14.6 Amps |
| Suitable For | Industrial Water Infrastructure |
| Body Material | Cast Iron |
| Liquid Temperature | -25°C to 120°C |
| Inlet Size | 80 mm |
| Outlet Size | 65 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 does the structural metallurgy safeguard this pump against wear?
Durable metallurgy on the Grundfos NB 65-250/270 includes an electrocoated EN-GJL-250 cast iron casing and a stainless steel impeller.
How does this pump enable quick mechanical inspections without piping disruption?
Plant maintenance on the NB 65-250/270 leaves facility pipework connected, utilizing a back-pull-out layout for fast mechanical servicing.
What three-phase voltage rating and motor power operate this pump?
The NB-65-250-270 is driven by a 7.5 kW motor running on a 415 V three-phase supply, drawing approximately 14.6 Amps with IP55 protection.
Which shaft sealing design and internal wear components protect this pump casing against mechanical fluid loss?
The NB 65 250 270 utilizes a robust BQQE mechanical shaft seal and replaceable wear rings to prevent fluid loss and preserve internal clearances.
How much water throughput and dynamic height does this pump deliver?
The NB/65/250/270 provides up to 1263 L/Min in fluid flow and 22.87 m in dynamic head, depending on system pressure demands.
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