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High-capacity sewage transfer applications demand robust pumping solutions capable of handling large volumes at significant heads. The Grundfos SL.100.240.2.52S.N.51D.A.T meets these requirements with its heavy-duty cast iron construction and Open S-Tube impeller. Operating on a 24 kW 415V motor drawing 49 Amps, this two-pole submersible pump delivers 5,334 L/min flow at 55.6 m head. The system maintains stable performance across temperatures from -10 to 40°C in collection pits and lift stations.
Hydraulic capacity is driven by a 24 kW motor operating on a 415v three-phase supply with a rated current of 49 Amps. This configuration generates a maximum flow of 5,334 L/min and achieves a maximum head of 55.6 m for high-volume transfer applications. The motor utilizes a star-delta starting method to manage peak electrical loads and ensure circulation stability during initial activation cycles. Consistent pressure behavior supports infrastructure in pressurized collection networks.
Internal fluid paths feature an Open S-Tube impeller designed for the free passage of solids in suspension. This centrifugal configuration facilitates the movement of contaminated liquids without internal clogging that compromises volumetric efficiency over long-term service. By utilizing a high-efficiency hydraulic profile, the unit minimizes internal friction and vibration to protect the rotating assembly during wastewater transfer. The Open S-Tube design is intended for sewage transfer where reliable solids handling is required.
Mechanical construction utilizes a heavy-duty cast iron housing and motor shell with an IP68 protection rating for depths up to 20 m. Longevity is anchored by a silicon carbide primary shaft seal and a silicon carbide/carbon secondary seal in an oil bath for motor insulation. This model includes integrated thermistors and moisture sensors to facilitate proactive monitoring of the motor assembly. The casting includes DN 100 inlet and outlet connections for integration into standard wastewater collection infrastructure.
Features
- Open S-Tube impeller configuration facilitates high-efficiency solids handling and prevents internal blockages in high-volume networks.
- Heavy-duty cast iron pump housing and motor shell provide the structural durability needed for permanent submerged installations.
- Double mechanical shaft seal with silicon carbide faces in an oil bath ensures protection for the 24 kW motor.
- IP68 enclosure rating confirms the system is suitable for continuous duty in submerged environments up to 20 m deep.
- Integrated thermistors and moisture sensors enable real-time monitoring to safeguard the electrical assembly against overheating.
- DN 100 inlet and DN 100 outlet connections allow for seamless integration into standard municipal plumbing networks.
- Maximum operating pressure of 8 bar supports integration into large-scale pressurized collection systems.
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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