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SKU: 93209377
Grundfos NB 80-315/320 Cast Iron 18.5 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Facility cooling distribution stations and condenser return loops use the Grundfos NB 80-315/320 end-suction pump. Fitted with a 18.5 kW motor, system piping interfaces through an axial DN 100 suction port and a radial DN 80 discharge flange.
Hydraulic discharge volume reaches approx. 2834 L/Min liquid delivery against an upper head limit of approx. 36.7 m. Housing construction features cataphoretically coated EN-GJL-250 cast iron, accommodating a stainless steel impeller and a BQQE mechanical seal. Net weight measures 260 kg.
Connecting via a 415 V three-phase circuit, the 18.5 kW motor operates at an electrical draw of 34.9 Amps. Fluid temperature capabilities range from -25°C to 120°C under working pressure limits up to 16 bar. Flange interfaces are dimensioned at DN 100 inlet and DN 80 outlet.
Motor casing protection satisfies IP55 environmental requirements with Class F 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
- Back-pull-out layout permits motor and impeller servicing without breaking pipe connections.
- Integral casing support feet provide direct anchoring to plant room inertia bases and plinths.
- Precision balanced rotating components reduce hydraulic noise and mechanical shaft deflection.
- Renewable casing wear rings retain pump efficiency and avoid direct volute casing wear.
- Solid shaft assembly with sealed ball bearings absorbs operational hydraulic and radial forces.
- EN1092-2 flanged connections conform to standard PN16 pipework dimensions.
- Continuous duty S1 rated electric drive motor operates in ambient temperatures up to 40°C.
SPECIFICATIONS
| Max Flow | 2834 L/Min |
| Max Head | 36.7 m |
| Power | 18.5 kW / 415v |
| Rated Current | 34.9 Amps |
| Suitable For | Commercial HVAC Hydronic Circulation |
| 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.
What shaft seal and wear ring components protect this pump against fluid loss?
Precision sealing on the Grundfos NB 80-315/320 incorporates a BQQE mechanical shaft seal alongside replaceable wear rings that preserve internal clearances.
What peak water output and dynamic lift can this pump provide?
The NB 80-315/320 provides approx. 2834 L/Min in fluid flow and approx. 36.7 m in dynamic head, depending on system pressure demands.
How do the housing and runner materials contribute to long pump service?
High-grade EN-GJL-250 cast iron forms the casing of the NB-80-315-320, housing a stainless steel impeller for lasting service.
What electrical feed standards and motor capacity run this pump?
The NB 80 315 320 is driven by a 18.5 kW motor running on a 415 V three-phase supply, drawing approximately 34.9 Amps with IP55 protection.
Can this pump circulate hot water circuits under maximum line pressure?
The NB/80/315/320 safely accommodates pumped fluid temperatures from -25°C to 120°C under working pressure limits up to 16 bar.
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