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SKU: 93207099
Grundfos NB 100-200/177 Cast Iron 4 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Primary water circulation skids and central heating lines feature the Grundfos NB 100-200/177 end-suction pump. Coupled to a 4 kW motor drive, fluid enters through an axial DN 125 suction port and exits through a radial DN 100 discharge flange.
Liquid transfer rating provides approx. 2899 L/Min fluid displacement across a maximum head of approx. 10.2 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 118 kg.
The dedicated feed at 415 V three-phase delivers power to the 4 kW motor, drawing 8.47 Amps full-load current. Working tolerances accommodate fluid temperatures spanning -25°C to 120°C at pressures reaching 16 bar. Flanged connections feature DN 125 inlet and DN 100 outlet dimensions.
The motor assembly provides IP55 enclosure protection 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
- 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.
- 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.
SPECIFICATIONS
| Max Flow | 2899 L/Min |
| Max Head | 10.2 m |
| Power | 4 kW / 415v |
| Rated Current | 8.47 Amps |
| Suitable For | Commercial Chilled Water Circulation |
| Body Material | Cast Iron |
| Liquid Temperature | -25°C to 120°C |
| Inlet Size | 125 mm |
| Outlet Size | 100 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 alloys make up the pump body, rotating element, and shaft seal?
Solid construction in EN-GJL-250 cast iron provides lasting durability for the Grundfos NB 100-200/177, paired with a stainless steel impeller.
What shaft seal and wear ring components protect against fluid leakage along the drive shaft?
Fluid containment in the NB 100-200/177 is maintained by a BQQE mechanical shaft seal, supported by replaceable wear rings that preserve hydraulic clearances.
What volumetric water throughput and discharge head does this pump maintain?
Delivering approx. 2899 L/Min in volumetric flow and approx. 10.2 m in dynamic head, the NB-100-200-177 adapts across its curve.
What piping flange sizes and connection standards are engineered onto this pump volute?
Pipe connections on the NB 100 200 177 consist of an axial 125 mm inlet and a radial 100 mm outlet meeting PN16 flange standards.
Can technicians service the electric drive without disconnecting system pipework?
Plant maintenance on the NB/100/200/177 leaves facility pipework connected, utilizing a back-pull-out layout for fast mechanical servicing.
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