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Targeting systems with higher pipe resistance, the Grundfos MAGNA1 25-80 circulator pump provides electronically controlled variable flow for heat pump secondary loops and multi-storey heating circuits. Its internal variable frequency drive matches pump output to variable heating loads.
Manufactured from EN-GJL-200 cast iron, the 180 mm port-to-port casing holds a precision composite impeller and air-cooled electronic power module. The assembly is rated for 10 bar working pressure and circulating temperatures from -10°C to 110°C, weighing 4.41 kg.
The 1 x 230-240 V 50/60 Hz permanent magnet motor has a maximum power input (P1) of 9 W to 128 W while electrical input power (P1) draws between 9 W and 128 W with a maximum current of 1.03 A. The hydraulic section produces a flow of 5.09 m³/h (85 L/Min) against a maximum head of 5.113 m connected via 1 1/2 inch threaded ports.
Control options include three proportional pressure settings, three constant pressure curves, and three constant speeds. Certified to an Energy Efficiency Index of 0.20 with Class F insulation and an IPX4D enclosure, the pump includes digital start/stop terminals and a fault alarm output.
FEATURES
- Generates 8 m maximum head to overcome elevated friction in zoned circuits
- Permanent magnet motor and integrated inverter deliver an EEI rating of 0.20
- Operating power self-adjusts between 9 W and 128 W according to heat demand
- Cast iron EN-GJL-200 pump body engineered for 10 bar system pressure rating
- Composite impeller resists chemical attack in water-glycol heating mixtures
- Integrated fault relay and remote run/stop input simplify BMS wiring
- 180 mm port-to-port length with standard 1 1/2 inch threaded union fittings
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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