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High-volume fluid optimization in municipal wastewater systems is achieved by the heavy-duty structural foundation of the Grundfos SL.150.100.4.52H.N.51D.A.T. This submersible pump addresses the requirements of municipal wastewater transport where contaminated liquids are present. The system handles effluent transfer at temperatures up to 40°C in subsurface collection pits. Maintaining operational flow behavior in permanent submerged installations is essential for infrastructure protection and facility maintenance.
Hydraulic performance is provided by a 10 kW four-pole motor on a 415v three-phase supply, generating a maximum flow of 6,000 L/min. This model achieves a maximum total head of 21.1 m. Operating with a rated current of 21 Amps, the unit maintains consistent torque and circulation stability during continuous duty cycles. Rapid evacuation is achieved through the DN 150 discharge port, while the 15-metre power cable provides a secure electrical connection for submerged installations.
Internal centrifugal design utilizes a high-efficiency Open S-Tube impeller to facilitate the passage of solids in suspension. This configuration handles wastewater, maintaining volumetric efficiency throughout prolonged service cycles in municipal networks. By utilizing the s-tube principle, the unit minimizes internal friction and vibration to protect the rotating assembly during high-volume discharge. The impeller setup is intended for municipal wastewater applications in collection and transfer systems.
Mechanical integrity is reinforced by a heavy-duty cast iron body and motor shell with an IP68 protection rating for depths up to 20 m. Motor insulation is anchored by a shielded assembly with a double mechanical shaft seal arrangement in an oil bath. This model features integrated moisture sensors and thermistors for proactive monitoring and early fault detection in submerged conditions. The architectural casting features DN 150 inlet and outlet connections for high-capacity integration into standard wastewater infrastructure.
Features
- Open S-Tube impeller configuration facilitates high-efficiency solids handling and prevents internal blockages in high-volume networks.
- Heavy-duty cast iron construction of the housing and motor shell provides the structural durability needed for deep pit installations.
- DN 150 inlet and DN 150 outlet connections allow for high-capacity liquid transfer through standard pipework.
- Double mechanical shaft seal in an oil bath with silicon carbide faces ensures the motor remains shielded from liquid ingress.
- IP68 enclosure rating confirms the unit is suitable for permanent immersion in wastewater collection pits up to 20 metres.
- Integrated thermistors and moisture sensors enable real-time monitoring to protect the electrical assembly.
- Four-pole motor operating at 1,482 rpm provides the starting torque required for high-volume wastewater 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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