NIRON pipes and fittings have been installed in Madison, Wisconsin for the replacement of an old, failed chiller with a new one along with the piping of the unit on the roof and for the heat exchanger The system is using 4” and 6” SDR-17 pipe and electrofusion fittings. The NIRON range, particularly suitable for use in large buildings and for industrial installations ensures high mechanical resistance and duration, even at high temperatures and pressures. NIRON has become a recognized and trustworthy product range and has already been installed in various schools, colleges, hospitals, senior housing buildings, apartment buildings and industrial plants where safety and efficiency are of primary importance.