Roll over image to zoom
SKU: 93169173
Grundfos NB 32-160/163 Cast Iron 4 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
The NB 32-160/163 end-suction centrifugal pump incorporates a 4 kW electric drive motor connected to DN 50 suction and DN 32 discharge flanged piping joints. Designed for continuous building service duty, the unit handles clean fluid movement across commercial plant installations.
Hydraulic rating calculations confirm a flow capacity of 484 L/Min at a maximum head threshold of 28.3 m. The volute housing is constructed from cataphoresis treated cast iron. Rotor hydraulics feature a stainless steel impeller supported by bronze wear rings. Total net weight measures 68 kg.
Motor electrical configuration on the NB 32-160/163 pump requires a 415 V three-phase connection rated at 4 kW output power. Operating current measures 7.82 Amps at nominal speed. Liquid temperature ranges extend from -25°C to 120°C under 16 bar pressure. Connection is made via DN 50 inlet and DN 32 outlet flanges.
Motor security on the NB 32-160/163 end-suction pump features an IP55 rated housing, Class F thermal insulation, and PTC thermistor winding relays. The back-pull-out structural geometry permits technicians to remove the motor drive and rotor without dismantling connected suction or discharge pipe headers.
Features
- 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.
- High-efficiency motor selection is configured to match the specific power supply characteristics, pumping environment and liquid properties of each installation.
- Back pull-out design allows complete rotating assembly removal including motor, coupling and impeller without disturbing pump housing or connected pipework.
- EN733 and ISO2858 dimensional compliance ensures interchangeability with other standard end-suction pumps across commercial and industrial installations.
IMPORTANT: Bulk freight charges apply. Please contact us for a freight quote before ordering.
SPECIFICATIONS
| Max Flow | 484 L/Min |
| Max Head | 28.3 m |
| Power | 4 kW / 415v |
| Rated Current | 7.82 Amps |
| Suitable For | District Heating & Cooling Networks |
| Body Material | Cast Iron |
| Liquid Temperature | '-25°C to 120°C |
| Inlet Size | 50 mm |
| Outlet Size | 32 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 kind of power supply does this pump require to run?
Electrical power for the Grundfos NB 32-160/163 requires a 415 V three-phase connection, driving an efficient 4 kW motor that draws 7.82 Amps.
How deep can this pump be installed underwater in a wet well?
Liquid operating limits establish that the NB 32-160/163 accommodates temperatures -25°C to 120°C during standard duties.
What maximum vertical water column can this pump maintain?
Dynamic lift generated by the NB-32-160-163 reaches a maximum elevation head of approximately 28.3 m across discharge lines.
What discharge flow rate does this pump maintain during peak operation?
Displacing fluid into connected headers, the NB 32 160 163 sustains up to 484 L/Min of volumetric throughput.
What corrosion-resistant materials are used in the wetted components?
Durable EN-GJL-250 construction gives the NB/32/160/163 exceptional structural strength and long-term protection against corrosive fluids.
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