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SKU: 93209305
Grundfos NB 50-160/175 Cast Iron 1.5 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Regional thermal circulation skids and chilled water stations incorporate the Grundfos NB 50-160/175 centrifugal pump. The unit couples a 1.5 kW drive motor to an axial DN 65 inlet nozzle and a radial DN 50 discharge connection.
Maximum flow volume produces approx. 890 L/Min liquid discharge while reaching a maximum head approx. 10.7 m. Volute casing construction features EN-GJL-250 cast iron with cataphoretic electrocoating, paired with a stainless steel impeller and BQQE shaft seal. Product net weight equals 53 kg.
Three-phase supply at 415 V powers the 1.5 kW motor assembly with a running current of 3.15 Amps. Operating limits support liquid temperatures from -25°C to 120°C and maximum system pressures of 16 bar. Flanged pipework attaches via DN 65 inlet and DN 50 outlet ports.
Motor frame engineering complies with IP55 enclosure standards and Class F insulation. Standard motor installation requires external electrical overload protection. The back-pull-out design allows complete drive and rotating assembly extraction while leaving the casing secured to distribution pipework.
Features
- 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.
- 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 maximum flow of 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.
SPECIFICATIONS
| Max Flow | 890 L/Min |
| Max Head | 10.7 m |
| Power | 1.5 kW / 415v |
| Rated Current | 3.15 Amps |
| Suitable For | Cooling Tower Hydronic Systems |
| 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.
How much water throughput and dynamic lift does this pump achieve?
Rated for to 890 L/Min in liquid flow and approx. 10.7 m in dynamic head, the Grundfos NB 50-160/175 accommodates diverse operating conditions.
What voltage feed and operating current are specified for this motor?
Powered by a 1.5 kW electric motor, the NB 50-160/175 connects to a 415 V three-phase feed and draws 3.15 Amps with an IP55 enclosure.
How does the metallurgy of this pump resist corrosion and physical wear?
The NB-50-160-175 incorporates an electrocoated EN-GJL-250 cast iron casing and a stainless steel impeller for dependable operation.
What liquid thermal range and working pressure thresholds apply to this pump?
Working limits on the NB 50 160 175 accommodate fluid temperatures from -25°C to 120°C with maximum system pressures reaching 16 bar.
How does the pump architecture simplify routine servicing in crowded mechanical rooms?
The back-pull-out construction on the NB/50/160/175 allows complete motor and runner removal without disconnecting piping headers, streamlining maintenance.
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