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Municipal wastewater collection in large complexes requires robust pumping assets built for intensive duty in permanent submerged environments. The Grundfos SE1.85.100.110.4.52H.N.51D.A.T Submersible Wastewater Pump addresses these demands by providing reliable liquid movement for effluent management. This unit handles contaminated fluids at temperatures up to 40°C, ensuring consistent performance in lift stations and drainage pits. The cast iron construction supports infrastructure protection and municipal wastewater transfer duties across varying liquid levels in civil networks.
Performance is provided by an 11 kW four-pole motor on a 415v three-phase supply, generating a maximum head of 21 m and a maximum flow of 4986 L/min. Operating with a rated current of 22 Amps at 1481 rpm, the unit maintains stable pressure for high-volume wastewater evacuation. A star-delta starting method is utilized to optimize electrical consumption and manage start-up loads in municipal networks. Electrical connection is established via a 15-metre power cable to facilitate deployment in deep-pit infrastructure and treatment plants.
Internal hydraulics utilize a high-efficiency S-TUBE impeller configuration designed for the movement of solids up to 85 mm without internal contact or clogging. This design prevents the blockages that compromise volumetric efficiency during prolonged service in sewage pumping stations. By utilizing S-TUBE hydraulics, the assembly provides superior clog resistance and ensures reliable wastewater transfer in intensive municipal service. This configuration is specifically engineered for high-capacity liquid handling where consistent performance is required for maintenance.
Mechanical integrity is reinforced by a cast iron pump body and motor shell with an IP68 protection rating for depths up to 20 m. Long-term reliability is supported by a double mechanical shaft seal featuring silicon carbide faces in an oil bath for motor insulation. This model includes integrated thermistors and moisture sensors for proactive monitoring of the Class H insulated motor assembly. Standard DN 150 inlet and DN 100 outlet connections allow for seamless integration into municipal wastewater and drainage infrastructure.
Features
- High-efficiency S-TUBE impeller manages solids up to 85 mm with significant resistance to clogging and blockages.
- Cast iron pump housing and motor shell provide the structural durability needed for deep submerged installations.
- Double mechanical shaft seal with silicon carbide faces ensures the motor remains protected from contaminated liquid.
- Class H insulated motor assembly includes integrated thermistors and moisture sensors for real-time monitoring.
- Four-pole 11 kW motor operating at 1481 rpm provides the torque required for municipal wastewater collection.
- DN 150 inlet and DN 100 outlet ports allow for standardized integration into municipal wastewater pipework.
- Integrated cooling jacket supports operational integrity in both dry and submerged mounting configurations.
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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