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Operating explicitly as a heavy duty, submersible stainless steel grey water pump, the Grundfos UNILIFT AP12.50.11.1 is engineered for reliable fluid transfer. It is structurally designed to handle clean water, storm water, and slightly dirty wastewater across both domestic and light industrial applications. The unit offers flexible deployment capabilities, functioning efficiently within permanent plumbing installations or acting as a portable drainage asset for temporary fluid relocation.
Hydraulic performance is driven by a highly efficient 1.1 kW motor mechanism. Powered via a 1 x 240 V single-phase electrical supply, the robust core operates with a rated draw of 8.5 Amps. Fluid is discharged through a 50 mm female threaded connection, allowing the internal volute to securely output a maximum flow of 500 L/Min. During vertical extraction cycles, the unit effectively scales the fluid column to establish a 17 metre maximum head.
Continuous operation in dirty environments requires a fortified internal circulation pathway. The pump incorporates a precision semi-open stainless steel impeller that allows the safe transit of solid environmental particles up to 12 mm in diameter. This specific geometric clearance prevents suspended matter from causing rotational jams while permitting the system to safely draw standing water down to a 100 mm minimum pumping level.
Built entirely from premium 304 stainless steel, the IP68-rated motor permits submerged underwater installations down to a 7-metre maximum depth. An integrated motor cooling jacket consistently dissipates internal heat, allowing for extended continuous operation even when only partially submerged. The pump safely processes fluids with a pH between 4 and 10 and handles liquid temperatures up to 55°C, with a brief tolerance of 70°C for two-minute intervals.
FEATURES
- Constructed entirely from premium 304 stainless steel across all wetted components to resist corrosion.
- Features an integrated motor cooling jacket for safe, extended operation during partial submersion.
- Utilizes a semi-open impeller design capable of continuously passing solid particles up to 12 mm in size.
- Rated with an IP68 enclosure class to safely permit underwater installations down to a 7-metre maximum depth.
- Certified to process a broad range of liquid chemistry, accommodating fluids with a pH value between 4 and 10.
- Capable of continuous extraction down to a minimum pumping level of exactly 100 mm.
- Engineered to safely tolerate 55°C liquid temperatures, and up to 70°C for brief two-minute intervals.
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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