Flygt USA - TOP Performance

TOP Performance

The TOP pump station is a product of a comprehensive research program conducted at the ITT Flygt R&D laboratory and aimed at finding the design criteria for self cleaning pump sumps for wastewater. The research results clearly showed that the geometry of the sump is critical, but also that the operating water levels and controlled turbulence are required to achieve a self-cleaning operation under the most extreme influx of wastewater solids. In summary, the design criteria are as follows:
• the flat bottom area must be kept to a minimum and located directly under the pump inlet
• all other surfaces must be vertical or steeply inclined, at least 45 degrees
• the distance from the bottom to the pump inlet should be as close as practical
• the pumps must occasionally operate to the lowest possible liquid level in the sump, so as to remove floating debris from the pump station
• the inflow should be submerged or otherwise prevented from cascading.

In a series of performance tests conducted in laboratory conditions, sumps with different diameters and bottom configurations were evaluated alongside each other to gauge their ability to prevent sediment build-up. One such a test shown here proves beyond any doubt how much more effective a TOP sump is over a conventional sump design. Effects of operating strategies or practical accessories, such as the mix-flush valve, were also studied and proved to be as important as the sump geometry. These laboratory results have been verified over the years in thousands of TOP pump stations installed allover the world.

The TOP pump station package now available in the USA is a second generation of the TOP concept. The design has been adapted to the American requirements and most of the equipment offered is the latest technology; from the full range of the famous N-pumps to the latest controls. All components are perfectly matched to provide unparalleled solutions to your wastewater handling challenges.

To find out more about the development work and solutions, please refer to: