Roll over image to zoom
SKU: 93209325
Grundfos NB 65-125/120 Cast Iron 0.55 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Plant cooling headers and heat exchanger supply manifolds integrate the Grundfos NB 65-125/120 end-suction pump. Powered by a 0.55 kW electric drive, piping connects via an axial DN 80 suction port and a radial DN 65 discharge interface.
Hydraulic delivery rating attains approx. 995 L/Min volumetric throughput with a approx. 3.7 m maximum head. 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 45 kg.
Drive power of 0.55 kW is produced across a 415 V three-phase connection at a draw of 1.23 Amps. Permissible media temperatures range between -25°C to 120°C under system pressures up to 16 bar. Flanged line ports measure DN 80 for suction and DN 65 for discharge.
Physical frame protection incorporates an IP55 ingress rating and Class F 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
- 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.
- 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.
SPECIFICATIONS
| Max Flow | 995 L/Min |
| Max Head | 3.7 m |
| Power | 0.55 kW / 415v |
| Rated Current | 1.23 Amps |
| Suitable For | Industrial Process Water Loops |
| Body Material | Cast Iron |
| Liquid Temperature | -25°C to 120°C |
| Inlet Size | 80 mm |
| Outlet Size | 65 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.
How much supply voltage and operating current are needed for this motor?
Electrical supply for the Grundfos NB 65-125/120 requires a 415 V three-phase connection, powering a 0.55 kW motor drawing 1.23 Amps with IP55 protection.
What mechanical seal type and internal clearances protect this pump casing against mechanical fluid loss?
Shaft sealing on the NB 65-125/120 is provided by a BQQE mechanical seal alongside replaceable wear rings that protect internal hydraulic geometry.
What maximum fluid volume and elevation head can this unit deliver?
Operating capacity on the NB-65-125-120 reaches approx. 995 L/Min in liquid flow and approx. 3.7 m in dynamic head across duty cycles.
How does the casing construction protect this pump from hydraulic wear?
The NB 65 125 120 features an electrocoated EN-GJL-250 cast iron volute and a precision stainless steel impeller for lasting durability.
Can maintenance staff inspect internal rotating parts without dismantling piping?
Routine plant servicing is simplified on the NB/65/125/120 by its back-pull-out layout, allowing drive extraction without dismantling pipework.
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