Engineering systems behind large-scale water attractions are playing an increasingly important role in ensuring efficient water management and operational reliability.
At Sun City’s Roaring Lagoon in South Africa, axial flow pump systems are being used to generate waves for one of the country’s most well-known water attractions. The system relies on precision components, including line shaft bushings manufactured by Vesconite Bearings, to maintain continuous operation.
The lagoon’s wave system is driven by three large axial flow pumps, each with a nominal diameter of 600 mm. These pumps circulate water through chambers where it is released in controlled bursts, producing waves of up to 1.8 metres approximately every 90 seconds.
Water is filtered before entering the system and recirculated continuously, with only limited replenishment required annually. This approach supports more efficient water use compared to traditional high-consumption systems.
Recent maintenance work carried out in 2024 included the installation of Vesconite Hilube line shaft bushings, selected for their low friction performance and durability in submerged and high-load environments.
The bushings support the alignment and stability of pump shafts, helping to reduce vibration, minimise wear and extend maintenance intervals. Improved reliability also reduces unplanned downtime in systems that operate continuously.
Axial flow pump systems in water management applications
Axial flow pump systems are widely used in water management applications where large volumes of water need to be moved efficiently at relatively low pressure. These systems are commonly found in flood control, irrigation, wastewater treatment and recreational water facilities.
In wave generation systems, axial flow pumps provide the consistent flow rates required to fill chambers before controlled release, creating repeatable wave patterns. The performance of supporting components such as bearings and bushings is critical in maintaining system efficiency and longevity.
Materials designed for water-lubricated environments, including engineered polymers, are increasingly used to improve performance and reduce maintenance requirements in these applications.
More coverage of industrial water technologies can be found in the H2O Global News water management section.
