Flygt 4220

Adapt output to process demands

The only constant in wastewater treatment is changing. Whether because of daily variation or long-term population growth, the process demands of wastewater treatment shift constantly. By controlling the output of their mixers, plants can realize significant energy savings and be prepared to adapt their mixing to variations and future changes. Flygt 4220 puts you in complete control with an integrated drive and remote operation, while the next-generation design ensures a lifetime of reliable, efficient operation.

Adjustability at your fingertips

Flygt 4220 lets you handle both the expected and the unknown. The tank-side operator panel or plant-integrated communication functions put you in control of your mixer’s output to meet changing needs and maintain desired results, whether it is due to daily variations or infrequent events like seasonal fluctuations or process changes. With a Flygt 4220 adaptive mixer, you can trust what is going on without having to touch the mixer or even leave the control room.

Flygt 4320


Xylem’s Flygt 4320 mixers combine reliability and rugged performance with unmatched energy efficiency that is easy to operate, easy to adjust. You can adjust for today’s flow and loadings, with the flexibility to change quickly to meet seasonal demands, and still have the power reserve to adjust to future flows as thrust requirements increase. Flygt 4320 can deliver just the thrust you need to meet mixing and treatment objectives, with minimal energy consumption – today, tomorrow and in the future.

 ​Flygt 4320 also enhances process optimization.  Making process modifications can change the thrust requirements by as much as 50%.  The Flygt 4320 provides the mixing versatility to adjust to process changes without compromising mixing or sacrificing energy efficiency, eliminating concerns over how process modifications might impact the mixing thrust requirements.  Mixing speeds can be changed with the touch of a button, quickly and easily, putting you in complete control.   The ease and versatility allow a higher degree of overall process optimization, for even more energy savings.  Flygt 4320 mixers are ideal for activated sludge processes that require adjustments to aeration levels, changing aeration /anoxic zones, changing headworks operations, or changing MLSS concentrations. ​