Feel free to reach out to us!
Find quick answers to common questions
Press & drag to view
For deep groundwater supply and borehole installations requiring greater hydraulic lift, the 4ZN612/6 provides a six-stage radial flow pump end for six-inch submersible installations. Its six-stage configuration increases the available head while retaining the 275 L/Min maximum flow rating of the range.
The pump end follows the ZN6 AISI 316 stainless steel construction, with AISI 316L stainless steel impellers and diffusers incorporating removable wear rings. The shaft is Duplex stainless steel UNS S 31803, while the replaceable coupling uses Duplex stainless steel UNS S 32304. The specified construction permits suspended sand up to 100 g/m³ and, when matched with a C4S motor, supports operation up to 60°C.
Maximum head is 68 metres, with hydraulic performance specified according to EN ISO 9906 Grade 3B. Water is delivered through the Rp 2 1/2” (65 mm) threaded connection, while the standard 4-inch NEMA motor connection allows the pump end to be coupled with a C4S submersible motor. Maximum immersion depth is 300 metres when used with the C4S motor.
The discharge assembly combines a microcast ASTM CF-8M (AISI 316 cast) discharge head and lower support with an integrated stainless steel non-return valve. Holes provided for safety-hook attachment assist with lowering and securing the pump end during deep borehole installation.
FEATURES- The six radial stages provide greater hydraulic lift than the lower-stage configuration while retaining the specified flow rating.
- AISI 316L impellers and diffusers provide the corrosion-resistant hydraulic surfaces specified for the ZN6 construction.
- Removable wear rings allow the hydraulic clearances to be serviced as required.
- The Duplex UNS S 31803 shaft provides the specified material strength for the rotating assembly.
- AISI 316L tie rods, cable guard and strainer form part of the stainless-steel pump-end arrangement.
- The integrated stainless steel non-return valve is positioned within the discharge assembly for backflow control.
- The microcast discharge head provides the structural connection and safety-hook provisions required for installation.
* Submersible motor sold separately - requires coupling and 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.
Can’t find your answer?
Recently viewed
Last seen items
Search
You May Like
- Choosing a selection results in a full page refresh.
- Opens in a new window.