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Driven by a 3 kW electric motor, the NB 50-125/111 end-suction centrifugal pump features an axial suction port (DN 65) and a radial discharge port (DN 50). Specified for commercial HVAC circulation, district heating installations, and industrial process water distribution, the pump mounts securely onto floor inertia bases in mechanical plant rooms.
Hydraulic wet-end output delivers a rated flow volume of 1026 L/Min with a maximum operational head limit of 11.36 m. The EN-GJL-250 cast iron casing receives cataphoresis electrocoating to limit surface oxidation. Inside, a stainless steel impeller works alongside bronze wear rings and a BQQE shaft seal. Physical net weight measures 62 kg.
Electrical power for the NB 50-125/111 model is supplied by a 415 V three-phase electric motor rated at 3 kW output power. Nominal operating current draw measures 10.3 Amps during full load operations. Operating liquid temperatures span from -25°C to 120°C under 16 bar working pressure. Suction inlet measures DN 80 with a DN 50 discharge port.
Motor protection on the NB 50-125/111 pump complies with IP55 enclosure standards to resist dust and moisture ingress, supported by Class F thermal insulation and internal PTC thermistors. The back-pull-out casing layout allows service personnel to remove the motor drive and rotor assembly without unbolting the pump volute from system suction and discharge piping headers.
Features
- 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).
- Integrally cast suction and discharge ports with dedicated vent and drain ports provide direct connection points without additional fittings.
- No baseplate or grouting required to maintain correct shaft alignment and vibration levels within Hydraulic Institute standards.
- Cataphoretic electrocoating on cast iron internal surfaces provides barrier protection against oxidative corrosion in hydronic circulation loops.
IMPORTANT:Bulk freight charges apply. Please contact us for a freight quote before ordering.
FAQs
General Product FAQs
1. How do I choose the right pump for my setup?
Selecting the correct pump depends on your required flow (L/min), total head (vertical lift + friction loss), and power source. If you're unsure, contact our team and we’ll size the right system for you.
2. Do you offer support with system design or setup?
Yes — we provide expert advice to help you choose, install, and optimise your pump system. Whether it's a simple setup or a custom solution, we’re here to help.
3. Do you offer complete pump solutions or just products?
We don’t just sell pumps — we provide complete solutions. From accessories and control systems to full packaged setups, we can supply everything required to get your system running efficiently.
Shipping & Availability
1. Do you offer Australia-wide shipping?
Yes — we ship across Australia. Bulk or oversized orders may incur additional freight charges otherwise we offer free shipping over $100*
2. How long does delivery take?
Orders are typically shipped within 1–2 business days, with delivery taking approximately 2–7 days depending on your location.
3. What courier or freight companies do you use?
We work with a range of trusted carriers including Australia Post, StarTrack, TNT, and other national freight providers depending on the size and location of your order. This allows us to ensure fast, reliable delivery across Australia, including regional and remote areas.
Warranty & Support
1. Do your pumps come with a warranty?
Yes — all products are backed by manufacturer warranties. Warranty periods vary depending on the brand and product type.
2. What support do you offer after purchase?
We provide ongoing support including:
- Installation advice
- Troubleshooting
- Spare parts supply
- System upgrades
3. What is the warranty process if something goes wrong?
If you experience an issue, simply contact our team with your order details and a description of the problem. We’ll guide you through troubleshooting and, if required, arrange repair, replacement, or manufacturer assessment in line with warranty terms.
Why choose Foundation Pumps?
1. Why choose Foundation Pumps over other suppliers?
We focus on supplying proven, high-quality pump solutions backed by real industry knowledge. Unlike general resellers, we understand how these systems perform in the field and provide honest, practical advice to ensure you get the right solution the first time.
2. Do you offer expert advice before and after purchase?
Yes — we support you at every stage, from selecting the right pump through to installation and ongoing use. Our team is available to assist with sizing, troubleshooting, and system optimisation whenever you need it.
3. Do you stock trusted brands and quality products?
We carefully select and supply pumps from reputable manufacturers known for reliability and performance. Our range includes both industry-leading brands and high-value alternatives that meet Australian standards and conditions.
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