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SKU: 93209355
Grundfos NB 65-315/320 Cast Iron 15 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Facility chilled liquid risers and air handler coils operate with the Grundfos NB 65-315/320 centrifugal pump. Fitted with a 15 kW motor, system piping interfaces through an axial DN 80 suction port and a radial DN 65 discharge flange.
Fluid throughput capacity delivers approx. 1843 L/Min operational flow with an upper head ceiling of approx. 36.6 m. Housing construction features cataphoretically coated EN-GJL-250 cast iron, accommodating a stainless steel impeller and a BQQE mechanical seal. Net weight measures 209 kg.
Full-load current draw is 28.7 Amps when operating on a 415 V three-phase feed for 15 kW output. Fluid temperature capabilities range from -25°C to 120°C under working pressure limits up to 16 bar. Flange interfaces are dimensioned at DN 80 inlet and DN 65 outlet.
The drive frame provides an IP55 ingress rating combined with Class F winding insulation. External motor overload protection must be provided by the installer. The back-pull-out construction allows extraction of the motor and rotating components without disturbing suction or discharge pipe connections.
Features
- 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.
- 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.
SPECIFICATIONS
| Max Flow | 1843 L/Min |
| Max Head | 36.6 m |
| Power | 15 kW / 415v |
| Rated Current | 28.7 Amps |
| Suitable For | Industrial Process Water Loops |
| 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.
Which suction intake and discharge port dimensions apply to this pump casing?
Connection ports on the Grundfos NB 65-315/320 feature an axial 80 mm suction intake and a radial 65 mm discharge flange rated for PN16 lines.
How much fluid volume and hydraulic lift does this pump maintain?
Operating capacity on the NB 65-315/320 reaches approx. 1843 L/Min in liquid flow and approx. 36.6 m in dynamic head across duty cycles.
What media temperature range and operating line limits apply to this pump?
Operating boundaries for the NB-65-315-320 safely accommodate fluid temperatures from -25°C to 120°C and maximum system pressures up to 16 bar.
Which shaft sealing design and internal wear components protect this pump housing against fluid leakage?
The NB 65 315 320 utilizes a robust BQQE mechanical shaft seal and replaceable wear rings to prevent fluid loss and preserve internal clearances.
How much motor power and operating current does this pump require?
Operating on a 415 V three-phase supply, the NB/65/315/320 utilizes a 15 kW motor drawing 28.7 Amps with IP55 weatherproof protection.
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