Roll over image to zoom
SKU: 93209288
Grundfos NB 40-315/334 Cast Iron 5.5 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Closed chilled fluid loops across building basements deploy the Grundfos NB 40-315/334 end-suction pump. Coupled to a 5.5 kW motor drive, fluid enters through an axial DN 65 suction port and exits through a radial DN 40 discharge flange.
Hydraulic throughput reaches 418 L/Min rated fluid movement across a maximum head of 30.73 m. Constructed with an EN-GJL-250 cast iron volute protected by cataphoretic electrocoating, internal hydraulics feature a stainless steel impeller and BQQE mechanical shaft seal. Net weight is 163 kg.
The unit runs on a 415 V three-phase connection drawing 10.6 Amps running current for 5.5 kW output. Working tolerances accommodate fluid temperatures spanning -25°C to 120°C at pressures reaching 16 bar. Flanged connections feature DN 65 inlet and DN 40 outlet dimensions.
The motor housing conforms to IP55 protection requirements with Class F electrical insulation. Because built-in thermal protection is not included, external motor overload protection must be supplied. Maintenance is streamlined via a back-pull-out arrangement allowing rotating element removal while the casing remains connected to piping.
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 | 418 L/Min |
| Max Head | 30 m |
| Power | 5.5 kW / 415v |
| Rated Current | 10.6 Amps |
| Suitable For | Industrial Water Infrastructure |
| 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.
What peak liquid volume and pressure head does this pump supply?
Displacing up to 418 L/Min in liquid flow and 30.73 m in dynamic head, the Grundfos NB 40-315/334 accommodates diverse operating conditions.
How much power and operating amperage are drawn by this motor drive?
Operating on a 415 V three-phase supply, the NB 40-315/334 utilizes a 5.5 kW motor drawing 10.6 Amps with IP55 weatherproof protection.
Which inlet and outlet port sizes interface with building pipe manifolds?
Pipeline interfaces on the NB-40-315-334 feature an axial 65 mm suction port and a radial 40 mm discharge flange conforming to PN16 ratings.
Can the rotating assembly be extracted while the pump body remains connected to pipes?
The back-pull-out construction on the NB 40 315 334 allows complete motor and runner removal without disconnecting piping headers, streamlining maintenance.
Which mechanical shaft seal and internal components maintain dependable fluid containment on this unit?
The NB/40/315/334 utilizes a robust BQQE mechanical shaft seal and replaceable wear rings to prevent fluid loss and preserve internal clearances.
Need help choosing the right pump?
Our team of pump experts are here to help you find the perfect solution for your application.
- Free expert advice
- Pump sizing & system recommendations
- Fast response — call or email us