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The Grundfos CMB 5-46 is a high-performance multistage pressure boosting pump designed to deliver consistent water pressure for domestic and light commercial applications. Supplied complete with the integrated PM1 pressure controller, this compact and reliable system automatically starts and stops based on demand, protecting the pump from dry running and ensuring stable pressure throughout your plumbing system.
Built with a heavy-duty cast iron pump housing and precision stainless steel impellers, the CMB 5-46 delivers strong pressure performance with a maximum head of 46 metres and flow rates up to 90 L/Min. The 0.9 kW motor operates on standard 240V single phase power and is IP55 rated for durability in demanding installations.
Ideal for pressure boosting from rainwater tanks, mains water supply systems, irrigation zones, and household water supply, the CMB 5-46 is engineered for reliable, automatic operation with minimal maintenance.
FEATURES
- Multistage pressure boosting pump
- Supplied with PM1 automatic controller (2.2 bar start pressure)
- Maximum head: 46 metres
- Maximum flow: 90 L/Min
- Cast iron pump housing
- Stainless steel impellers (AISI 304)
- 0.9 kW single phase motor
- IP55 protection rating
- Built-in motor protection
- Suitable for clean water applications
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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