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SKU: 93209332
Grundfos NB 65-160/143 Cast Iron 7.5 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
The NB 65-160/143 end-suction centrifugal pump incorporates a 7.5 kW electric drive motor connected to DN 80 suction and DN 65 discharge flanged piping joints. Designed for continuous building service duty, the unit handles clean fluid movement across commercial plant installations.
Hydraulic rating calculations confirm a flow capacity of 1707 L/Min at a maximum head threshold of 20.72 m. The volute housing is constructed from cataphoresis treated cast iron. Rotor hydraulics feature a stainless steel impeller supported by bronze wear rings. Total net weight measures 116 kg.
Motor electrical configuration on the NB 65-160/143 pump requires a 415 V three-phase connection rated at 7.5 kW output power. Operating current measures 14.3 Amps at nominal speed. Liquid temperature ranges extend from -25°C to 120°C under 16 bar pressure. Connection is made via DN 80 inlet and DN 65 outlet flanges.
Motor security on the NB 65-160/143 end-suction pump features an IP55 rated housing, Class F thermal insulation, and PTC thermistor winding relays. The back-pull-out structural geometry permits technicians to remove the motor drive and rotor without dismantling connected suction or discharge pipe headers.
Features
- PN16 flanged connection ratings on sizes up to and including DN 150 provide elevated working pressure capability beyond standard EN733 10 bar ratings.
- 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.
IMPORTANT:Bulk freight charges apply. Please contact us for a freight quote before ordering.
SPECIFICATIONS
| Max Flow | 1707 L/Min |
| Max Head | 20.72 m |
| Power | 7.5 kW / 415v |
| Rated Current | 14.3 Amps |
| Suitable For | Commercial Building Services HVAC |
| 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.
What power rating, supply voltage profile, and operating amperage govern this heavy-duty pump?
The induction motor system in Grundfos NB 65-160/143 provides 7.5 kW of shaft output, requiring a three-phase 415 V line drawing 14.3 Amps.
With elevated fluid temperatures, how does this end-suction unit maintain seal integrity across loops?
Permissible liquid temperatures for NB 65-160/143 span from -25°C to 120°C under a maximum system working pressure of 10 bar.
To drive water across expansive district piping, how far vertically can this pump elevate fluid?
For heavy district mechanical rooms, NB-65-160-143 maintains a maximum vertical delivery lift of approximately 20.72 m.
Displacing fluid through heavy municipal networks, how many liters of media does this pump move?
For primary plant room manifolds, NB 65 160 143 circulates an operational liquid volume of approximately 1707 L/Min.
To ensure reliable hydronic containment, what alloys make up the wet end of this centrifugal pump?
To endure severe primary loop conditions, NB/65/160/143 features an EN-GJL-250 cast iron housing with a precision-cast bronze impeller.
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