scope:

NEN-EN-ISO 15876-3 specifies the characteristics of fittings for polybutene-1 (PB-1) piping systems intended to be used for hot and cold water installations within buildings for the conveyance of water, whether 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 15876-1). The designation polybutene is used together with the abbreviation PB throughout this document. This document covers a range of service conditions (application classes) and design pressure classes. For values of TD, Tmax and Tmal in excess of those in ISO 15876-1:2016, Table 1, this document does not apply. NOTE It is the responsibility of the purchaser or specifier to make the appropriate selections from these