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The Lowara 4ZN612/4-3 radial flow submersible pump handles groundwater supply, irrigation, and mine dewatering with its AISI 316 stainless steel wet end and compact 6-inch design. Continuous submersion in abrasive borehole conditions demands equipment that minimizes maintenance interruptions, and this 2.2 kW unit delivers through its all-stainless construction and replaceable coupling. The integrated non-return valve prevents backflow, while the 142 mm overall diameter fits standard casings.
Powered by a 415V three-phase motor drawing 6.1 Amps, maximum flow reaches 275 L/Min with shut-off head of 45.4 metres. Performance curves comply with EN ISO 9906 Grade 3B, ensuring predictable operation. The 65 mm discharge port connects to standard pipework, and the suction strainer limits sand ingress to 100 g/m3.
AISI 316 stainless steel throughout the wet end resists corrosion from aggressive groundwater and abrasive particles. The radial flow impeller includes a removable wear ring, allowing component replacement without full pump disassembly. The replaceable coupling simplifies routine servicing, reducing downtime in critical applications.
Weighing 27 kg, the pump features microcast stainless steel head and motor support castings. Safety hook holes on the discharge head facilitate secure lowering during installation. Liquid temperature tolerance extends to 60°C, and the unit accepts both C4S and L6W motor configurations.
FEATURES
- Shaft manufactured from Duplex stainless steel UNS S 31803 for high strength
- External tie rods constructed from AISI 316L stainless steel for corrosion protection
- Shaft sleeves provide wear protection for internal rotating components
- Lower motor support uses ASTM CF-8M cast stainless steel construction
- Elastomers utilize EPDM materials for reliable fluid sealing
- Thrust bearings incorporate PTFE and Graphite for friction management
- ErP 2009/125/EC compliant with MEI ≥ 0.40 at 2900 rpm
* Motor and pump supplied separately - requires assembly
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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