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SKU: 93209267
Grundfos NB 40-250/230 Cast Iron 15 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 65 axial suction and DN 40 radial discharge ports, the NB 40-250/230 pump processes clean liquid media across active HVAC circuits. Powered by a 15 kW electric motor, the system operates across continuous commercial pumping cycles.
The hydraulic wet-end achieves a rated flow capacity of 965 L/Min with a maximum head rating of 61.57 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 157 kg.
Power specifications for the NB 40-250/230 end-suction pump call for a 415 V three-phase electrical supply rated at 15 kW motor power. Current draw under load measures 29.1 Amps. Operating fluid temperatures span -25°C to 120°C with a maximum working pressure rating of 16 bar. The housing features DN 65 axial suction and DN 40 radial discharge ports.
The NB 40-250/230 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
- 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.
- Cataphoretic electrocoating on cast iron internal surfaces provides barrier protection against oxidative corrosion in hydronic circulation loops.
- Close-coupled configuration eliminates coupling alignment procedures and reduces overall installation footprint compared to long-coupled alternatives.
- Ball bearing support arrangement accommodates both radial and axial thrust loads generated during continuous duty operation at rated speed.
IMPORTANT:Bulk freight charges apply. Please contact us for a freight quote before ordering.
SPECIFICATIONS
| Max Flow | 965 L/Min |
| Max Head | 61.57 m |
| Power | 15 kW / 415v |
| Rated Current | 29.1 Amps |
| Suitable For | High-Capacity Plant Room Pumping |
| Body Material | Cast Iron |
| Liquid Temperature | '-25°C to 120°C |
| Inlet Size | 65 mm |
| Outlet Size | 40 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.
Discharging fluid through heavy flanged pipework, what total dynamic lift is delivered on site?
Discharging pressurized liquid into elevated municipal headers, Grundfos NB 40-250/230 generates a dynamic lift of approximately 61.57 m.
Propelling liquid through heavy district manifolds, how much fluid throughput does this assembly deliver?
Operating with balanced centrifugal impulsion, NB 40-250/230 displaces a maximum liquid volume of approximately 965 L/Min.
What housing alloy and closed impeller configuration are utilized in this heavy centrifugal pump?
Cataphoresis electrodeposition protects the EN-GJL-250 cast iron housing of NB-40-250-230, which operates with a precision-cast bronze impeller.
For heavy municipal pumping stations, which electrical voltage, kilowatt rating, and amps are required?
The high-torque motor powering NB 40 250 230 delivers 15 kW from a three-phase 415 V electrical feed, drawing a running current of 29.1 Amps.
To what temperature extremes is this cast iron pump rated under peak working line pressure?
Permissible operating temperatures for NB/40/250/230 range from -25°C to 120°C alongside a structural pressure boundary of 16 bar.
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