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SKU: 93209304
Grundfos NB 50-160/167 Cast Iron 11 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Commercial fluid circulation duties in hydronic heating plants and industrial process loops are handled by the NB 50-160/167 end-suction centrifugal pump. Equipped with a 11 kW motor drive, the unit features standardized DN 65 axial inlet and DN 50 radial outlet flanged pipe connections.
Liquid circulation capacity reaches a rated flow volume of 1484 L/Min while generating 33.85 m maximum head limit. The casing body is cast in EN-GJL-250 iron with electrocoated protective finish. Fluid movement is driven by a stainless steel impeller with BQQE mechanical shaft seal. Net product weight measures 143 kg.
A 11 kW drive motor powers the NB 50-160/167 unit from a 415 V three-phase electrical source, drawing 21.5 Amps nominal current. Working fluid limits handle liquid temperatures from -25°C to 120°C under line pressure ratings up to 16 bar. Standard DN 65 inlet and DN 50 outlet flanged connections support mounting.
Protective features on the NB 50-160/167 pump include an IP55 motor enclosure, Class F winding insulation, and internal PTC thermistor monitoring. The back-pull-out design allows complete drive and impeller extraction without disturbing connected suction or discharge pipework flanges in plant rooms.
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 | 1484 L/Min |
| Max Head | 33.85 m |
| Power | 11 kW / 415v |
| Rated Current | 21.5 Amps |
| Suitable For | Industrial Process Water Loops |
| Body Material | Cast Iron |
| Liquid Temperature | '-25°C to 120°C |
| Inlet Size | 65 mm |
| Outlet Size | 50 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.
From a thermal perspective, which media temperature limits and working pressures are permissible on site?
Handling both chilled liquid and hot water, Grundfos NB 50-160/167 operates reliably across -25°C to 120°C with pressure limits to 16 bar.
Through heavy-duty floor-mounted pipework, what maximum dynamic head rating is certified on site?
High-torque centrifugal rotation enables NB 50-160/167 to maintain a steady dynamic head of approximately 33.85 m.
Under full-throttle pumping schedules, what maximum fluid delivery capacity is sustained on site?
Under severe hydronic pumping loads, NB-50-160-167 delivers a peak volumetric throughput of approximately 1484 L/Min.
To prevent galvanic deterioration, what protective cataphoresis coating is applied to this shell?
The spiral volute geometry of NB 50 160 167 is cast from heavy-duty cast iron, complemented by a durable stainless steel impeller.
To operate this heavy-duty induction motor, what line supply, wattage, and amperage are certified on site?
Requiring a three-phase 415 V electrical supply, NB/50/160/167 operates a 11 kW motor drawing 21.5 Amps under peak pumping load.
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