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SKU: 93209307
Grundfos NB 50-160/177 Cast Iron 2.2 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Basement pump stations and primary hydronic risers rely on the Grundfos NB 50-160/177 end-suction pump. Fitted with a 2.2 kW motor, system piping interfaces through an axial DN 65 suction port and a radial DN 50 discharge flange.
Pumping output delivers 762 L/Min volumetric throughput and attains 9.304 m maximum head elevation. Housing construction features cataphoretically coated EN-GJL-250 cast iron, accommodating a stainless steel impeller and a BQQE mechanical seal. Net weight measures 64 kg.
Motor performance under 415 V three-phase power draws 4.5 Amps to yield 2.2 kW drive 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 65 inlet and DN 50 outlet.
The drive motor incorporates IP55 ingress protection and Class F temperature 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
- 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.
- 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.
SPECIFICATIONS
| Max Flow | 762 L/Min |
| Max Head | 9 m |
| Power | 2.2 kW / 415v |
| Rated Current | 4.5 Amps |
| Suitable For | Commercial HVAC Hydronic Circulation |
| Body Material | Cast Iron |
| Liquid Temperature | -25°C to 120°C |
| Inlet Size | 65 mm |
| Outlet Size | 50 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 durable metals form the pump volute and rotating components?
Precision casting in EN-GJL-250 iron forms the Grundfos NB 50-160/177 casing, paired with a stainless steel impeller for lasting service.
How much running amperage and motor power are needed for this drive?
Operating on a 415 V three-phase supply, the NB 50-160/177 utilizes a 2.2 kW motor drawing 4.5 Amps with IP55 weatherproof protection.
What maximum volumetric flow and head height does this unit provide?
Operating capacity on the NB-50-160-177 reaches up to 762 L/Min in liquid flow and 9.304 m in dynamic head across duty cycles.
Which mechanical shaft seal and internal components protect this pump housing against fluid leakage?
Fluid containment in the NB 50 160 177 is maintained by a BQQE mechanical shaft seal, supported by replaceable wear rings that preserve hydraulic clearances.
How do operating temperature limits and maximum line pressure apply to this unit?
The NB/50/160/177 safely accommodates pumped fluid temperatures from -25°C to 120°C under working pressure limits up to 16 bar.
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