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SKU: 93207127
Grundfos NB 100-315/312 Cast Iron 22 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Primary chilled liquid headers and cooling tower loops rely on the Grundfos NB 100-315/312 centrifugal pump. Driven by an electric 22 kW motor assembly, the pump incorporates an axial DN 125 suction port and a radial DN 100 discharge connection.
Volumetric throughput performance generates approx. 3778 L/Min fluid output across a approx. 34.4 m maximum head. The pump housing is cast in EN-GJL-250 iron with cataphoretic electrocoating. Fluid displacement is driven by a stainless steel impeller and a BQQE mechanical shaft seal. Net product weight measures 319 kg.
Operating current of 42.2 Amps is drawn from a 415 V three-phase line to run the 22 kW motor. Operational limits permit media temperatures from -25°C to 120°C under working pressures up to 16 bar. Flanged pipe connections measure DN 125 on the inlet and DN 100 on the outlet.
Drive housing detailing satisfies IP55 ingress specifications, utilizing Class F thermal insulation. Standard IEC electric drive design requires external motor overload protection. The back-pull-out structural layout permits complete motor and rotating assembly extraction without disconnecting piping headers.
Features
- Solid stub shaft configuration supported by deep groove ball bearings absorbs axial thrust loads.
- Standardized EN1092-2 PN16 flange dimensions match standard commercial and district pipe manifolds.
- High-efficiency IEC electric drive motor rated for S1 continuous operation in ambient conditions up to 40°C.
- Back-pull-out construction allows drive and impeller removal without disconnecting suction or discharge lines.
- Precision balanced rotor and runner assemblies minimize operating vibration across all pump speeds.
- Cast iron volute casing with integral mounting feet absorbs hydraulic forces and pipework stresses.
- Replaceable wear rings retain correct internal hydraulic clearances over long operating periods.
SPECIFICATIONS
| Max Flow | 3778 L/Min |
| Max Head | 34.4 m |
| Power | 22 kW / 415v |
| Rated Current | 42.2 Amps |
| Suitable For | Commercial Building Services HVAC |
| Body Material | Cast Iron |
| Liquid Temperature | -25°C to 120°C |
| Inlet Size | 125 mm |
| Outlet Size | 100 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 fluid thermal boundaries and system pressure limits are accommodated?
Operational boundaries on the Grundfos NB 100-315/312 tolerate fluid media from -25°C to 120°C under line pressures reaching up to 16 bar.
What maintenance advantages are provided by the back-pull-out arrangement?
Routine plant servicing is simplified on the NB 100-315/312 by its back-pull-out layout, allowing drive extraction without dismantling pipework.
What casing construction and impeller metallurgy protect this pumping unit?
The NB-100-315-312 incorporates an electrocoated EN-GJL-250 cast iron casing and a stainless steel impeller for dependable operation.
How much water volume and dynamic elevation can this pump develop?
Operating capacity on the NB 100 315 312 reaches approx. 3778 L/Min in liquid flow and approx. 34.4 m in dynamic head across duty cycles.
What three-phase supply parameters and motor power operate this pump?
The NB/100/315/312 is driven by a 22 kW motor running on a 415 V three-phase supply, drawing approximately 42.2 Amps with IP55 protection.
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