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Industrial effluent transfer and municipal wastewater collection systems are the focus of the Grundfos SL1.50.80.40.2.50B.C. This cast iron submersible pump holds CE EN12050-2 approval and is built for treatment plants and centralized sumps. It is suitable for conveying untreated wastewater through discharge piping in civil environments.
This model features a 4 kW 2-pole motor running at 2930 rpm. Operating on a 3 x 415V supply with a rated current of 8.2 Amps, it provides a maximum head up to 26 m and a maximum flow up to 1164 L/min. The motor is rated for continuous S1 duty in untreated wastewater with a temperature range of 0°C to 40°C. The motor is cooled by the surrounding pumped liquid during normal submerged operation.
The S-tube impeller is designed for untreated wastewater containing solids up to 50 mm while helping reduce the risk of clogging. The unit includes a DN 65 inlet and a DN 80 (3") outlet with DIN flanges. This configuration supports the transfer of untreated effluents in industrial transfer sequences.
Built with an EN-GJL-250 cast iron pump housing and motor casing, the unit features a double SIC/SIC mechanical shaft seal arrangement. Integrated moisture sensors are used for seal and motor monitoring. Protection includes PTC sensors, winding-embedded thermal switches, 10 metres of LYNIFLEX power cable, and an IP68 enclosure rating. The pump is suitable for installation depths up to 7 metres.
FEATURES
- S-tube impeller with 50 mm free passage for reliable transit of solids-laden water in industrial applications.
- 4 kW 2-pole motor operating at 2930 rpm on a 3 x 415V three-phase supply with 8.2 Amps rated current.
- High-head performance up to 26 m for high-pressure wastewater relocation in treatment plants and sumps.
- DN 65 inlet and DN 80 (3") discharge connection with DIN flange standards for industrial piping infrastructure.
- Double mechanical SIC/SIC shaft seals with an oil chamber for redundant moisture defence against fluid infiltration.
- Integrated PTC sensors and moisture detection for advanced motor health and active thermal monitoring.
- Class H stator insulation and IP68 protection classification for safe, deep-well submerged operation.
- 10-metre heavy-duty LYNIFLEX power cable for flexible installation in deep wastewater sumps and wet wells.
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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