The most operationally cost-effective and most commonly installed solution for cleaning reservoirs. The AWS-Flush Bucket which is installed outside of the medium (storm water, drainage water etc.), removes deposits without external energy and extremely effectively due to a strong flushing wave. The shape of the AWS-flush bucket constructed on the basis of FEM-models is characterised by an optimal torque curve and material usage rate with a low net weight and is the most modern construction on the market.