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Large-scale irrigation networks and municipal water supply systems require pumps capable of moving substantial volumes from deep boreholes. The Lowara 4ZN646/2-3 meets these demands with its 6-inch wet end and 4-inch motor configuration, processing up to 1000 L/Min while maintaining reliable operation in continuous-duty applications. The multi-stage hydraulic assembly delivers stable performance across varying demand conditions.
Corrosion resistance is achieved through AISI 316 stainless steel construction across every wetted component, protecting against aggressive groundwater chemistry. The impeller and diffuser arrangement incorporates a removable wear ring for straightforward servicing, while the integrated non-return valve prevents water column backflow when the motor stops. The suction strainer limits suspended sand ingress to 100 grams per cubic metre, extending internal component life.
Powered by a 3 kW three-phase motor at 415V, this pump draws 7.64 Amps under normal operation. Maximum head reaches 20.2 metres at shut-off, with flow capacity of 1000 L/Min through the 80 mm discharge port. Performance testing complies with EN ISO 9906 Grade 3B tolerances, ensuring predictable operation across the duty range.
Class F insulation and IP68 enclosure rating support installation depths up to 300 metres. The Duplex stainless steel shaft and AISI 316L tie rods provide mechanical strength for continuous submerged service. NEMA motor coupling compatibility simplifies assembly, and the discharge head incorporates safety hook holes for secure lowering during installation.
4Z = 6" wet end with 4" Lowara motor
FEATURES- Delivery port features integrated holes for safety hooks
- Drive shaft is manufactured from Duplex stainless steel UNS S 31803
- External tie rods are constructed from AISI 316L stainless steel
- Includes a replaceable coupling component for mechanical assembly
- Integrated intake strainer utilizes AISI 316L stainless steel
- Lower motor support complies with standard NEMA coupling specifications
* 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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