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SKU: 93209303
Grundfos NB 50-160/158 Cast Iron 1.1 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Facility mechanical plant rooms and primary cooling headers operate with the Grundfos NB 50-160/158 end-suction pump. Powered by a 1.1 kW electric drive, piping connects via an axial DN 65 suction port and a radial DN 50 discharge interface.
Hydraulic circulation delivers 674 L/Min rated output with an upper head threshold of 7.35 m. 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 50 kg.
Input voltage of 415 V three-phase runs the 1.1 kW drive motor with an operating load of 2.34 Amps. Permissible media temperatures range between -25°C to 120°C under system pressures up to 16 bar. Flanged line ports measure DN 65 for suction and DN 50 for discharge.
Environmental casing design incorporates an IP55 rating with Class F electrical 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
- Back-pull-out arrangement allows fast access to motor and impeller without disturbing pipework.
- Precision balancing of rotating parts delivers quiet, low-vibration fluid transfer.
- Heavy-section cast iron volute with integral mounting pads provides solid base support.
- Replaceable wear rings protect casing hydraulics and retain designed pumping clearances.
- Solid stub shaft and ball bearing arrangement counteracts operating mechanical stresses.
- Standardized PN16 dimensions per EN1092-2 align with facility pipe headers.
- IEC standardized electric drive rated for continuous S1 operation in ambients up to 40°C.
SPECIFICATIONS
| Max Flow | 674 L/Min |
| Max Head | 7 m |
| Power | 1.1 kW / 415v |
| Rated Current | 2.34 Amps |
| Suitable For | District Heating & Cooling Networks |
| 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.
Which mechanical shaft seal and internal components provide dependable fluid containment along the shaft?
Internal protection in the Grundfos NB 50-160/158 incorporates a BQQE mechanical shaft seal and replaceable wear rings that maintain hydraulic clearances.
What peak fluid volume and discharge elevation does this pump develop?
Supplying up to 674 L/Min in liquid flow and 7.35 m in dynamic head, the NB 50-160/158 accommodates diverse operating conditions.
What materials are used to construct the housing and internal shaft seal?
Cast EN-GJL-250 iron with cataphoretic coating forms the housing of the NB-50-160-158, paired with a stainless steel runner for durability.
Does this pump allow drive replacement without breaking pipework connections?
Extracting the rotating assembly on the NB 50 160 158 requires no pipe disconnection, thanks to its back-pull-out maintenance architecture.
What power supply parameters and motor output run this pumping unit?
Driven across a 415 V three-phase supply, the NB/50/160/158 features a 1.1 kW motor drawing 2.34 Amps with an IP55 enclosure.
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