PROGEF Natural Polypropylene Piping System is available in sizes from ½ in. to 4 in. and designed for use in applications where there is concern about the presence of small beads or crevices in the piping system. This piping ensures top quality water to USP standards at the point of use due to low microbiological attachment, excellent leach-out values and no rouging. PROGEF also exhibits high surface finish characteristics compared to metal, which is highly advantageous in applications where fluids tend to adhere to metallic surfaces.