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SKU: 93207148
Grundfos NB 32-125/106 Cast Iron 1.1 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Featuring an end-suction structural layout with DN 50 axial suction and DN 32 radial discharge ports, the NB 32-125/106 pump processes clean liquid media across active HVAC circuits. Powered by a 1.1 kW electric motor, the system operates across continuous commercial pumping cycles.
The hydraulic wet-end achieves a rated flow capacity of 330 L/Min with a maximum head rating of 10.53 m. Cast iron housing materials provide solid pressure containment up to 16 bar. The internal assembly houses a stainless steel impeller fitted with bronze wear rings. Net equipment weight is 38 kg.
Power specifications for the NB 32-125/106 end-suction pump call for a 415 V three-phase electrical supply rated at 1.1 kW motor power. Current draw under load measures 4.01 Amps. Operating fluid temperatures span -25°C to 120°C with a maximum working pressure rating of 16 bar. The housing features DN 50 axial suction and DN 32 radial discharge ports.
The NB 32-125/106 electric motor carries an IP55 ingress protection rating alongside Class F thermal insulation and integrated PTC thermistors. System maintenance relies on back-pull-out architecture, enabling drive head disassembly while the pump volute stays secured to concrete foundation bases and pipe runs.
Features
- 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.
- ATEX Zone 1, 2, 21 or 22 certification available for operation in potentially explosive atmospheres (except E-model variants).
- Integrally cast suction and discharge ports with dedicated vent and drain ports provide direct connection points without additional fittings.
- No baseplate or grouting required to maintain correct shaft alignment and vibration levels within Hydraulic Institute standards.
IMPORTANT:Bulk freight charges apply. Please contact us for a freight quote before ordering.
SPECIFICATIONS
| Max Flow | 330 L/Min |
| Max Head | 10.53 m |
| Power | 1.1 kW / 415v |
| Rated Current | 4.09 Amps |
| Suitable For | Commercial Building Services HVAC |
| 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 incoming voltage configuration, motor power capacity, and operational amperage apply on site?
Electrical specifications for Grundfos NB 32-125/106 indicate a 1.1 kW drive running on a three-phase 415 V connection drawing 4.09 Amps.
Under ongoing primary loop duty, what media temperature boundaries can this pump sustain?
Thermal performance certified for NB 32-125/106 permits non-stop circulation with fluids between -25°C to 120°C at pressures to 16 bar.
Engineered with a rigid foot-mounted volute, what total dynamic head can this unit sustain?
Operating with axial suction and radial discharge, NB-32-125-106 delivers a maximum dynamic head of approximately 10.53 m.
Supplying heavy fluid throughput to primary loops, how many liters per minute are delivered?
Supplying heavy fluid throughput to primary loops, NB 32 125 106 delivers an operational discharge of approximately 330 L/Min.
To resist cavitation and erosion, what specific alloys are selected for the rotating runner?
The end-suction hydraulic chamber in NB/32/125/106 integrates an EN-GJL-250 cast iron volute with a precision-cast bronze impeller.
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