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SKU: 93207124
Grundfos NB 100-250/274 Cast Iron 15 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Plant hydronic heating circuits and boiler manifolds deploy the Grundfos NB 100-250/274 end-suction pump. Powered by a 15 kW electric drive, piping connects via an axial DN 125 suction port and a radial DN 100 discharge interface.
Hydraulic output parameter provides approx. 3848 L/Min fluid displacement against a approx. 25.9 m head threshold. A cataphoretically coated EN-GJL-250 cast iron casing houses the precision stainless steel impeller and BQQE mechanical shaft seal. Total net product weight measures 231 kg.
An operating draw of 28.7 Amps powers the 15 kW motor from a 415 V three-phase line connection. Permissible media temperatures range between -25°C to 120°C under system pressures up to 16 bar. Flanged line ports measure DN 125 for suction and DN 100 for discharge.
Enclosure sealing design satisfies IP55 ingress standards with Class F electrical insulation. The motor requires external overload protection in the electrical control panel. A back-pull-out mechanical design enables service personnel to extract the impeller and drive assembly without dismantling pipe flanges.
Features
- Integral casing support feet provide direct anchoring to plant room inertia bases and plinths.
- Precision balanced rotating components reduce hydraulic noise and mechanical shaft deflection.
- Renewable casing wear rings retain pump efficiency and avoid direct volute casing wear.
- Solid shaft assembly with sealed ball bearings absorbs operational hydraulic and radial forces.
- EN1092-2 flanged connections conform to standard PN16 pipework dimensions.
- Continuous duty S1 rated electric drive motor operates in ambient temperatures up to 40°C.
- Back-pull-out layout permits motor and impeller servicing without breaking pipe connections.
SPECIFICATIONS
| Max Flow | 3848 L/Min |
| Max Head | 25.9 m |
| Power | 15 kW / 415v |
| Rated Current | 28.7 Amps |
| Suitable For | Boiler Plant & Thermal Transfer |
| 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 peak water delivery and vertical elevation does this pump develop?
Fluid displacement to 2885 L/Min in liquid flow and approx. 25.9 m in dynamic head, the Grundfos NB 100-250/274 accommodates diverse operating conditions.
Which inlet suction and outlet discharge port dimensions are featured on this centrifugal unit?
Pipe connections on the NB 100-250/274 consist of an axial 125 mm inlet and a radial 100 mm outlet meeting PN16 flange standards.
What shaft seal and wear ring components protect this pump housing against fluid leakage?
Dynamic sealing on the NB-100-250-274 incorporates a BQQE mechanical shaft seal and replaceable wear rings that retain internal clearances.
What voltage feed and running amperage power this pumping unit?
The NB 100 250 274 is driven by a 15 kW motor running on a 415 V three-phase supply, drawing approximately 28.7 Amps with IP55 protection.
What operating thermal range and line pressure ratings govern this unit?
The NB/100/250/274 safely accommodates pumped fluid temperatures from -25°C to 120°C under working pressure limits up to 16 bar.
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