PexKIT tubing with oxygen barrier is used in underfloor heating systems, defined as Class 4, according to EN ISO 15875-1:2003 standard. For this application, manifolds with eurocon fitting are available. Material: cross-linked polyethylene PE-X, peroxide cross-linking method PE-Xa. Oxygen barrier (EVOH ethylene-vinyl alcohol copolymer) – prevents oxygen penetration from the atmosphere through the pipe molecules and thus oxidation of metal components in the system. Reference standards: EN ISO 15875-2:2003 regarding production, testing and application scope. DIN 4726 for oxygen barrier. Maximum pressure: PN10 bar. Tubing is supplied in coils with lengths of 500m and red color. Structure: 3 layers 1 PE-Xa pipe 2 Adhesive 3 Oxygen barrier