Roll over image to zoom
SKU: 93209258
Grundfos NB 40-160/172 Cast Iron 7.5 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Specified for commercial building services, process water loops, and district cooling infrastructure, the NB 40-160/172 end-suction centrifugal pump incorporates DN 65 suction and DN 40 discharge flanged ports. The end-suction volute design connects directly to suction line headers and concrete foundation bases.
At nominal operational speed, hydraulic output provides 807 L/Min flow throughput alongside a maximum head limit of 36.85 m. Structural construction incorporates an EN-GJL-250 cast iron body with cataphoresis surface finish. Internal components feature a stainless steel impeller and BQQE seal. Total net weight stands at 110 kg.
The NB 40-160/172 electric motor operates on a 415 V three-phase supply drawing 14.3 Amps rated current at 7.5 kW output power. Fluid handling parameters accommodate liquid temperatures between -25°C to 120°C up to 16 bar system pressure. Line connection uses opposite DN 65 inlet and DN 40 outlet flanged ports.
Enclosure protection on the NB 40-160/172 model meets IP55 standards while motor windings feature Class F insulation and PTC thermistor protection relays. Maintenance technicians can extract the drive unit using back-pull-out access without removing the cast iron volute casing from connected plant room piping manifolds.
Features
- Ball bearing support arrangement accommodates both radial and axial thrust loads generated during continuous duty operation at rated speed.
- PN16 flanged connection ratings on sizes up to and including DN 150 provide elevated working pressure capability beyond standard EN733 10 bar ratings.
- O-ring seal between pump housing and cover eliminates leakage risk at the volute-to-cover joint under sustained operating pressures.
- Optimised impeller and volute hydraulics deliver unimpeded liquid flow through the pump casing, reducing internal turbulence losses.
- All stainless steel shaft construction provides improved corrosion resistance compared to carbon steel alternatives in wetted service areas.
- Mechanical shaft seal can be replaced without removing the impeller, system piping, pump volute casing or drive motor from the installation.
- Housing, impeller and wear ring use dissimilar material pairings to prevent galling and ensure no sticking elements during extended standby periods.
IMPORTANT: Bulk freight charges apply. Please contact us for a freight quote before ordering.
SPECIFICATIONS
| Max Flow | 807 L/Min |
| Max Head | 36.85 m |
| Power | 7.5 kW / 415v |
| Rated Current | 14.3 Amps |
| Suitable For | Industrial Water Infrastructure |
| Body Material | Cast Iron |
| Liquid Temperature | '-25°C to 120°C |
| Inlet Size | 65 mm |
| Outlet Size | 40 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 many meters of dynamic lift does this pump provide?
To overcome vertical elevation resistance, the Grundfos NB 40-160/172 develops a maximum pumping head of approximately 36.85 m.
How much fluid throughput does this pump move under full load?
At full operating capacity, the NB 40-160/172 moves up to 807 L/Min to keep liquid levels controlled during peak inflow.
How is the pump casing constructed to resist mechanical and fluid wear?
Structural defense on the NB-40-160-172 is provided by a rugged EN-GJL-250 casing designed to withstand heavy mechanical stress.
What electrical voltage and motor kilowatt output drive this unit?
Running on 415 V three-phase power supplies, the NB 40 160 172 is driven by a 7.5 kW motor rated at 14.3 Amps.
How deep can this pump be installed underwater in a wet well?
Routine operational thermal ceilings enable the NB/40/160/172 to process liquids -25°C to 120°C.
Need help choosing the right pump?
Our team of pump experts are here to help you find the perfect solution for your application.
- Free expert advice
- Pump sizing & system recommendations
- Fast response — call or email us