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SKU: 93207160
Grundfos NB 32-160.1/177 Cast Iron 4 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Commercial fluid circulation duties in hydronic heating plants and industrial process loops are handled by the NB 32-160.1/177 end-suction centrifugal pump. Equipped with a 4 kW motor drive, the unit features standardized DN 50 axial inlet and DN 32 radial outlet flanged pipe connections.
Liquid circulation capacity reaches a rated flow volume of 374 L/Min while generating 33.98 m maximum head limit. The casing body is cast in EN-GJL-250 iron with electrocoated protective finish. Fluid movement is driven by a stainless steel impeller with BQQE mechanical shaft seal. Net product weight measures 68 kg.
A 4 kW drive motor powers the NB 32-160.1/177 unit from a 415 V three-phase electrical source, drawing 7.82 Amps nominal current. Working fluid limits handle liquid temperatures from -25°C to 120°C under line pressure ratings up to 16 bar. Standard DN 50 inlet and DN 32 outlet flanged connections support mounting.
Protective features on the NB 32-160.1/177 pump include an IP55 motor enclosure, Class F winding insulation, and internal PTC thermistor monitoring. The back-pull-out design allows complete drive and impeller extraction without disturbing connected suction or discharge pipework flanges in plant rooms.
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 | 374 L/Min |
| Max Head | 33.98 m |
| Power | 4 kW / 415v |
| Rated Current | 7.82 Amps |
| Suitable For | Industrial Water Infrastructure |
| 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.
Overcoming line resistance in primary headers, what peak dynamic head does this assembly maintain?
Through rigid end-suction volute passages, Grundfos NB 32-160.1/177 sustains a peak dynamic head rating of approximately 33.98 m.
In commercial boiler facilities, what maximum fluid throughput does this assembly deliver?
In commercial boiler facilities, NB 32-160.1/177 supplies an operational volumetric circulation of approximately 374 L/Min.
How do the cast iron casing and balanced impeller resist hydrodynamic fatigue in primary loops?
Enduring baseplate construction in NB-32-160.1-177 features an electrocoated cast iron shell with a durable stainless steel impeller.
For primary plant wiring, which electrical voltage, motor power rating, and amperage apply?
The baseplate-mounted motor on NB 32 160.1 177 provides 4 kW of mechanical power, requiring a three-phase 415 V feed drawing 7.82 Amps.
In primary heating distribution loops, what liquid temperature window is permissible on site?
Thermal tolerance certified for NB/32/160.1/177 safely encompasses process liquid temperatures from -25°C to 120°C at pressures to 10 bar.
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