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SKU: 93209310
Grundfos NB 50-200/188 Cast Iron 1.5 kW End Suction Centrifugal Pump with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Central boiler room circulation manifolds and return lines deploy the Grundfos NB 50-200/188 end-suction pump. Coupled to a 1.5 kW motor drive, fluid enters through an axial DN 65 suction port and exits through a radial DN 50 discharge flange.
Hydraulic discharge provides 590 L/Min rated circulation alongside a 10.4 m maximum head parameter. 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 70 kg.
Line power of 415 V across three phases operates the 1.5 kW motor at an amperage rating of 3.15 Amps. Working tolerances accommodate fluid temperatures spanning -25°C to 120°C at pressures reaching 16 bar. Flanged connections feature DN 65 inlet and DN 50 outlet dimensions.
Motor ingress engineering conforms to IP55 standards 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
- 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.
- Heavy-section cast iron volute with integral mounting pads provides solid base support.
- Replaceable wear rings protect casing hydraulics and retain designed pumping clearances.
SPECIFICATIONS
| Max Flow | 590 L/Min |
| Max Head | 10 m |
| Power | 1.5 kW / 415v |
| Rated Current | 3.15 Amps |
| Suitable For | Industrial Water Infrastructure |
| 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.
What fluid temperature span and working line pressures can this pump handle?
Safe operation for the Grundfos NB 50-200/188 spans pumped media temperatures from -25°C to 120°C under line pressures up to 16 bar.
What liquid delivery capacity and vertical head can this unit provide?
Supplying up to 590 L/Min in liquid flow and 10.4 m in dynamic head, the NB 50-200/188 accommodates diverse operating conditions.
What three-phase supply and motor wattage are required for this unit?
Powered by a 1.5 kW electric motor, the NB-50-200-188 connects to a 415 V three-phase feed and draws 3.15 Amps with an IP55 enclosure.
What internal components and casing materials support long pump life?
The NB 50 200 188 incorporates an electrocoated EN-GJL-250 cast iron casing and a stainless steel impeller for dependable operation.
What mechanical seal type and internal clearances protect this pump against fluid loss?
Dynamic sealing on the NB/50/200/188 incorporates a BQQE mechanical shaft seal and replaceable wear rings that retain internal clearances.
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