CLEANING BALLS DISPENSER CENTRAL VACUUMA "healthy" piping network ensures the optimal performance of your central vacuum system! The flipBUS is a small device designed to remove the small residue left in the piping network of a central vacuum system. It leaves the piping system cleaner and smoother, which provides higher performance of the system and guarantees increased efficiency. Cleaning balls dispenser Eliminates the residue left in the piping network Improves the systems performance