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SKU: 93209299
Grundfos NB 50-160/131 Cast Iron 0.55 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Central cooling headers and evaporative condenser skids feature the Grundfos NB 50-160/131 end-suction pump. Driven by an electric 0.55 kW motor assembly, the pump incorporates an axial DN 65 suction port and a radial DN 50 discharge connection.
Operational pumping volume achieves 519 L/Min rated delivery against a 4.603 m maximum head. The pump housing is cast in EN-GJL-250 iron with cataphoretic electrocoating. Fluid displacement is driven by a stainless steel impeller and a BQQE mechanical shaft seal. Net product weight measures 41 kg.
Configured for a 415 V three-phase supply, the motor consumes 1.23 Amps rated current for 0.55 kW shaft power. Operational limits permit media temperatures from -25°C to 120°C under working pressures up to 16 bar. Flanged pipe connections measure DN 65 on the inlet and DN 50 on the outlet.
Enclosure engineering satisfies IP55 protection standards alongside Class F insulation. Standard IEC electric drive design requires external motor overload protection. The back-pull-out structural layout permits complete motor and rotating assembly extraction without disconnecting piping headers.
Features
- 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.
- 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.
SPECIFICATIONS
| Max Flow | 519 L/Min |
| Max Head | 4 m |
| Power | 0.55 kW / 415v |
| Rated Current | 1.23 Amps |
| Suitable For | High-Capacity Plant Room Pumping |
| 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.
Can technicians inspect the impeller and shaft seal without disconnecting line pipework?
Back-pull-out layout on the Grundfos NB 50-160/131 allows rapid motor and rotating element extraction without unbolting system piping headers.
What fluid capacity and elevation head are provided by this pump?
The NB 50-160/131 provides up to 519 L/Min in fluid flow and 4.603 m in dynamic head, depending on system pressure demands.
How much motor capacity and line amperage drive this pumping unit?
Driven across a 415 V three-phase supply, the NB-50-160-131 features a 0.55 kW motor drawing 1.23 Amps with an IP55 enclosure.
Can this pump operate across extreme fluid temperatures and high line pressures?
Operating boundaries for the NB 50 160 131 safely accommodate fluid temperatures from -25°C to 120°C and maximum system pressures up to 16 bar.
Which mechanical shaft seal and internal components protect this pump casing against mechanical fluid loss?
The NB/50/160/131 utilizes a robust BQQE mechanical shaft seal and replaceable wear rings to prevent fluid loss and preserve internal clearances.
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