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SKU: 93209353
Grundfos NB 65-315/282 Cast Iron 7.5 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Building service utility skids and chilled water circuits deploy the Grundfos NB 65-315/282 centrifugal pump. Powered by a 7.5 kW electric drive, piping connects via an axial DN 80 suction port and a radial DN 65 discharge interface.
Rated pumping throughput generates 1177 L/Min liquid output and reaches a 25.11 m head threshold. A cataphoretically coated EN-GJL-250 cast iron casing houses the precision stainless steel impeller and BQQE mechanical shaft seal. Total net product weight measures 161 kg.
Connecting to a 415 V three-phase feed, the drive draws 14.6 Amps while delivering 7.5 kW motor output. Permissible media temperatures range between -25°C to 120°C under system pressures up to 16 bar. Flanged line ports measure DN 80 for suction and DN 65 for discharge.
Physical motor protection complies with IP55 environmental criteria and Class F insulation. The motor requires external overload protection in the electrical control panel. A back-pull-out mechanical design enables service personnel to extract the impeller and drive assembly without dismantling pipe flanges.
Features
- Solid stub shaft configuration supported by deep groove ball bearings absorbs axial thrust loads.
- Standardized EN1092-2 PN16 flange dimensions match standard commercial and district pipe manifolds.
- High-efficiency IEC electric drive motor rated for S1 continuous operation in ambient conditions up to 40°C.
- Back-pull-out construction allows drive and impeller removal without disconnecting suction or discharge lines.
- Precision balanced rotor and runner assemblies minimize operating vibration across all pump speeds.
- Cast iron volute casing with integral mounting feet absorbs hydraulic forces and pipework stresses.
- Replaceable wear rings retain correct internal hydraulic clearances over long operating periods.
SPECIFICATIONS
| Max Flow | 1177 L/Min |
| Max Head | 25 m |
| Power | 7.5 kW / 415v |
| Rated Current | 14.6 Amps |
| Suitable For | Commercial Chilled Water Circulation |
| 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.
What liquid thermal boundaries and maximum pressure limits are supported?
Fluid boundaries for the Grundfos NB 65-315/282 safely tolerate media from -25°C to 120°C under system pressures up to 16 bar.
How much volumetric circulation and dynamic pressure can this pump develop?
Delivering up to 1177 L/Min in volumetric flow and 25.11 m in dynamic head, the NB 65-315/282 adapts across its curve.
Does routine motor servicing require disconnecting the pump from facility headers?
Extracting the rotating assembly on the NB-65-315-282 requires no pipe disconnection, thanks to its back-pull-out maintenance architecture.
Which shaft sealing design and internal wear components maintain internal hydraulic clearances on this unit?
Dynamic sealing on the NB 65 315 282 incorporates a BQQE mechanical shaft seal and replaceable wear rings that retain internal clearances.
Which suction intake and discharge port dimensions are featured on this centrifugal unit?
Standard PN16 flanged connections on the NB/65/315/282 include an axial 80 mm suction intake and a radial 65 mm discharge port.
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