EN 1254-6:2021

This document specifies product characteristics, assessment methods, compliance criteria of test results and a designation system for push-fit fittings for the purpose of joining tubes of copper, plated copper, multilayer pipes and plastics pipes. The fitting ends have a nominal diameter from 6 mm to 54 mm. The fittings are designed for a service lifetime up to fifty years.This document is applicable to push-fit fittings for joining one or more of the following tubes or pipes:- copper tubes to EN 1057.The fittings are used up to the operating temperatures and corresponding maximum operating pressures as indicated in Annex A.This document applies to copper alloy fittings. A non-exhaustive list of these copper alloys is given in CEN/TS 13388.Adaptor fittings may combine push-fit ends with fitting ends defined in the other parts of EN 1254.Push-fit fittings for metallic tubes may also have flanged end connections according to EN 1092-3.Push-fit fittings may also have a plated or other decorative surface coating.Fittings can be produced by machining, metal forming, casting, or fabrication.Products covered by this document are intended to be used in liquid applications:- hot, cold or combined hot and cold water, including systems according to EN 806;- closed heating systems according to EN 12828;- cooling systems;- drainage systems;- fire protection systems including sprinkler systems according to EN 12845.