UNE-EN ISO 15875-2:2026

This document specifies the characteristics of pipes for crosslinked polyethylene (PE-X) piping systems intended to be used for hot and cold water installations within buildings for the conveyance of waterwhether or not intended for human consumption (domestic systems), and for heating systems, under design pressures and temperatures according to the class of application (see ISO 15875-1).It also specifies the test parameters for the test methods referred to in this document.The designation crosslinked polyethylene is used together with the abbreviation PE-X throughout this document.ISO 15875 covers a range application classes, design pressures and pipe dimension classes. For values of design temperature (TD), maximum temperature (Tmax) and malfunction temperature (Tmal) and servicetimes in excess of those defined in ISO 15875-1, this document does not apply.NOTE 1 It is the responsibility of the purchaser or specifier to make the appropriate selections from these application classes (see ISO 15875-1), taking into account their particular requirements and any relevant nationalregulations and installation practices or codes.The ISO 15875 standards series is a piping system standard.This document shall only be used in conjunction with all the other parts of ISO 15875. This document is applicable to PE-X pipes for hot and cold water installations, which are intended to be connected to fittingsconforming to ISO 15875-3, whereby the joints conform to the requirements of ISO 15875-5.It is applicable to PE-X pipes with and without barrier layer.NOTE 2 In the case of PE-X pipes provided with a thin barrier layer, e.g. to prevent or greatly diminish the difusión of gases and the transmission of light through the pipe wall, the design stress requirements are totally met by the basePE-X pipe.In order to comply with this standard, all requirements of this document shall be met.NOTE 3 The test results obtained from a specific piping system test according to ISO 15875-5 cannot be transferred to other combinations of pipes and fittings.