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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.
Across site electrical distribution panels, what power rating and operational current are listed?
Energy delivery to the rotating shaft in Grundfos NB 32-160/163 is provided by a 4 kW motor on a three-phase 415 V line at 7.82 Amps.
For commercial energy facilities, what minimum and maximum liquid temperatures can it sustain?
Permissible liquid temperatures for NB 32-160/163 span from -25°C to 120°C under a maximum system working pressure of 16 bar.
For plant room mechanical skids, how high can this floor-mounted centrifugal pump elevate liquid?
For plant room mechanical skids, NB-32-160-163 maintains a maximum vertical delivery lift of approximately 28.3 m.
For primary plant room manifolds, how many liters of hot water does this unit circulate?
For primary plant room manifolds, NB 32 160 163 circulates an operational liquid volume of approximately 484 L/Min.
What specific materials of construction protect this end-suction assembly against physical wear?
Erosion resistance in NB/32/160/163 is delivered by an EN-GJL-250 cast iron pressure volute fitted with a precision-cast bronze impeller.
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