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SKU: 93209285
Grundfos NB 40-315/298 Cast Iron 30 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 40-315/298 pump processes clean liquid media across active HVAC circuits. Powered by a 30 kW electric motor, the system operates across continuous commercial pumping cycles.
The hydraulic wet-end achieves a rated flow capacity of 666 L/Min with a maximum head rating of 100.8 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 314 kg.
Power specifications for the NB 40-315/298 end-suction pump call for a 415 V three-phase electrical supply rated at 30 kW motor power. Current draw under load measures 56 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 40-315/298 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
- 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.
- 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.
IMPORTANT:Bulk freight charges apply. Please contact us for a freight quote before ordering.
SPECIFICATIONS
| Max Flow | 666 L/Min |
| Max Head | 100.8 m |
| Power | 30 kW / 415v |
| Rated Current | 56 Amps |
| Suitable For | Facility Fluid Transfer & Circulation |
| 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.
In large-scale district heating facilities, what total vertical column does this pump overcome?
Supplying strong upward pressure to primary manifolds, Grundfos NB 40-315/298 provides a dynamic lift of approximately 100.8 m.
Under ongoing full load demand, what peak volumetric water volume does this end-suction pump discharge?
In primary district boiler headers, NB 40-315/298 sustains a maximum volumetric flow rate of approximately 666 L/Min.
In terms of physical toughness, which metals form the heavy volute casing and rotating closed runner?
Durable hydronic containment in NB-40-315-298 is maintained by an electrocoated cast iron housing alongside a precision-cast bronze impeller.
Under peak mechanical load, what power consumption, electrical feed, and current draw are listed on site?
Electrical infrastructure for NB 40 315 298 requires a three-phase 415 V connection to run its 30 kW motor at an amperage of 56.0 Amps.
Across process circulating lines, what media temperature span and pressure limit are permissible on site?
Safe fluid containment in NB/40/315/298 is preserved for circulating media from -25°C to 120°C up to a line pressure limit of 16 bar.
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