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SKU: 93209287
Grundfos NB 40-315/318 Cast Iron 37 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Constructed for fixed foundation mounting in mechanical rooms, the NB 40-315/318 single-stage end-suction pump connects via DN 65 suction and DN 40 discharge ports. A 37 kW electric motor provides mechanical power for continuous water circulation across building service headers.
Fluid output parameters show a rated throughput of 749 L/Min and a maximum head limit of 115.6 m. Electrocoating treatment on the cast iron casing limits rust in hydronic loops. The internal rotor holds a stainless steel impeller with bronze wear rings. Unit physical weight is 330 kg.
Operating on a 415 V three-phase power supply, the NB 40-315/318 electric motor yields 37 kW output power with a current draw of 68.1 Amps. Media temperature capabilities span from -25°C to 120°C under continuous line pressures up to 16 bar. Flanged ports feature DN 65 suction and DN 40 discharge sizing.
Winding insulation on the NB 40-315/318 motor complies with Class F standards within an IP55 dust and spray resistant motor housing equipped with PTC thermistors. Service procedures benefit from back-pull-out construction, permitting internal rotor disassembly without disconnecting main system pipework headers.
Features
- 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.
- 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).
IMPORTANT:Bulk freight charges apply. Please contact us for a freight quote before ordering.
SPECIFICATIONS
| Max Flow | 748 L/Min |
| Max Head | 115.6 m |
| Power | 37 kW / 415v |
| Rated Current | 68.1 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.
Across extensive district circulation loops, what maximum liquid volume does this pump move each minute?
Supporting extensive municipal distribution loops, Grundfos NB 40-315/318 provides an operational throughput of approximately 748 L/Min.
How are the internal rotating parts and pressure housing protected against mechanical operating fatigue?
Engineered for demanding end-suction duty, NB 40-315/318 pairs an EN-GJL-250 cast iron casing with a precision-cast bronze impeller.
When driving this heavy centrifugal runner, how much electrical wattage and current are drawn?
Configured for municipal plant power, NB-40-315-318 utilizes a 37 kW motor operating from a three-phase 415 V line drawing 68.1 Amps.
Within what liquid temperature limits and system working pressures can this end-suction pump operate safely?
The casing and seal design of NB 40 315 318 endure extreme thermal variations from -25°C to 120°C with pressure limits up to 16 bar.
Supplying pressurized media to elevated headers, what dynamic discharge head is certified on site?
In high-head municipal pumping stations, NB/40/315/318 sustains a maximum dynamic elevation of approximately 115.6 m.
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