Introducing the SESL Open S-tube Extended Range Frame 56 Wastewater Pumps

Reliability and durability are paramount in wastewater applications. The new range of SE/SL pumps has been extended with frame size 56 pumps providing unparalleled power and efficiency for pumping wastewater.

Equipped with IE3/IE4 motor components and the innovative Open S-tube impeller, the SE/SL pumps ensure the highest operational efficiency. Built with self-cleaning design, this makes them ideal for pumping wastewater with medium to extreme concentrations of fibers and suspended solids.

The SE/SL pumps also stand out with their diverse material variants and advanced coatings, offering enhanced sustainability for corrosive and aggressive applications. Additionally, their impact design ensures a seamless replacement of most wastewater pumps, minimizing the need for extensive system adjustments

Open S-tube® impeller eliminates clogging at wastewater station

With a bustling population of 195,000 residents, the city of Townsville in Queensland is the largest urban centre north of Australia’s Sunshine Coast. As an industrial hub in the midst of an area of rich biodiversity, framed by the Great Barrier Reef and the dry tropics region, the city’s council acknowledges the importance of reliability in the region’s wastewater systems to avoid costly and damaging breakdowns.

Full range of monitoring and controls


With a Grundfos monitoring and control system, you get the information you require to maintain and optimise your wastewater system. You gain effective alarm handling, surveillance and scheduling of workflows.

LC 231 and LC 241 controller panels offer users an innovative and holistic method of controlling pump levels. While the control units house different features, they share their remotely controllable functionality via the Grundfos GO app, their intuitive and user-friendly control interface, and their simple set-up and configuration features.

Discover the Power of Our Harsh Environment Wastewater Pumps

Explore the versatility of our state-of-the-art wastewater pumps meticulously crafted for the most challenging environments. Whether for water utility or sea water applications, our pumps offer unwavering reliability and efficiency across diverse applications.

Delve into the specifics and explore our comprehensive range of cutting-edge solutions.

In modern wastewater treatment, mixing is an essential part of the operation and treatment process. This handbook focusses on the main mixing issues and applications, with special regard to submersible mixers and flowmakers. 

Download wastewater engineering manuals

Essential wastewater guidance for technical decision makers

Get guidance for pump selection and installation in drainage, effluent and sewage applications. This specific manual focuses on smaller wastewater transport systems using pumps with motors from 0.15 kW to 30 kW. Explore pumps and pump pits, sizing and selection, pump performance data, pump system layout, life-cycle costs and much more, including practical examples.

Essential guidance for wastewater engineering, installation and operation

Explore our dedicated manual for wastewater discharge systems using large wastewater pumps up to 520 kW. Learn about submersible and dry-pit submersible installation and operation, including the correct layouts and conditions for optimal operations.

Your Grundfos Authorised Dealer possesses not only the best LOCAL knowledge, but also a genuine desire to discuss your individual pumping requirements and provide you with a professional solution to meet your needs.