UNE-EN ISO 15875-1:2026

This document specifies the general aspects of crosslinked polyethylene (PE-X) piping systems intended tobe used for hot and cold water installations within buildings for the conveyance of water, whether or notintended for human consumption (domestic systems), and for heating systems, under design pressures andtemperatures according to the class of application (see Table 1).It also specifies the test parameters for the test methods referred to in this standard.The designation crosslinked polyethylene is used together with the abbreviation PE-X throughout ISO 15875,including this document.This document covers a range of service conditions (application classes), design pressure and pipe dimensionclasses. For values of design temperature (TD), maximum temperature (Tmax) and malfunction temperature(Tmal) and service times in excess of those defined in Table 1, this standard does not apply.NOTE 1 It is in the responsibility of the purchaser or specifier to make the appropriate selections from theseapplication classes in table 1, taking into account their particular requirements and any relevant national regulationsand installation practices or codes.The ISO 15875 standards series is a piping system standard.This document shall only be used in conjunction with the other parts of ISO 15875, which are applicable toPE-X pipes, fittings and their joints including joints with components made of other plastics and non-plasticsmaterials intended to be used for hot and cold water installations.In order to comply with this standard all requirements of this document shall be met.NOTE 2 The test results obtained from a specific piping system test according ISO 15875-5 cannot be transferredto other combinations of pipes and fittings.