Packaging plant for taps, with machine feeding belt. The conveyor belt carries the product to be packed up to the counting unit, which counts every single piece to be packed. After that, the counter unloads the pieces into a modular hopper which carries the pieces to the tube of the packaging machine. Each module contains all the pieces that must be contained in a single package. The finished bags come out of the packaging machine, containing the exact number of pieces, set on the display.