PexKIT piping with an oxygen barrier is used in underfloor heating systems, defined as Class 4, in accordance with EN ISO 22391-2:2009. For this application, manifolds with Eurocone connections are available for pipes with diameters between 14 and 20 mm. Material: high-temperature-resistant polyethylene, PE-RT TYPE II. Oxygen barrier (EVOH ethylene-vinyl alcohol copolymer) – prevents oxygen from the atmosphere from penetrating through the pipe molecules and, implicitly, the oxidation of the metal components in the system. Reference standards: EN ISO 22391-2:2009 regarding production, testing, and scope of application. DIN 4726 for the oxygen barrier. Maximum pressure: PN8 bar. The piping is supplied as coils of various lengths in the following colors: natural, green, and red. Structure: 3 layers: 1 PE-Xb pipe 2 Adhesive 3 Oxygen barrier