New Technical Manual for NIRON and NIRON Cool Pro systems. The manual is available immediately and is in pocket format so you can always have it with you! NIRON is now one of NUPI's best known systems. It is composed of pipes and fittings made of PP-RCT, an innovative material that allows the pipes produced to withstand high pressure levels, especially at high temperatures. NIRON Cool Pro is produced using PPR material with an outer layer of POLYPROPYLENE suitably stabilized against UV rays. NIRON Clima Cool Pro pipe is produced in full PP layer or in composite material with the addition of fiberglass. As the carrier layer is made of PP-R, it has the high, well known and standardized performance of this class of polypropylene. The pipe complies with the main reguylations for the transport of drinking water and has been designed in compliance with the highest safety standards.