BS EN 1254-8-2021 Copper and copper alloys一Plumbing fittings Part 8: Press fttings for use with plastics and multilayer pipes

BS EN 1254-8-2021 Copper and copper alloys一Plumbing fittings Part 8: Press fttings for use with plastics and multilayer pipes. When tested according to the method in 531.1 fitting bodies shall show no ViSLIaI Indication of leakage. 4.22 RequIrements br liquid applIcations 4.22.2 Leak tightness under internal hydrostatic pressure Fittings assessed as indicated in 4.1.1 are considered to be leak tight ii nder internal hydrostatic pressure. 4.2.2,2 Leak tightness under vacuum When tested according to the method in 5.3.2.1 the change in pressure shall not 1w greater than 0.05 bar at the conclusion of the test. 4.2.2.3 Leak tightness under temperature cycling (for heating networks) When tested according to the method In 5.322 fittings shall show no signs of leakage or permanent distortion. 4.2.2.4 Resistance to pull-out When tested according to the method in 53,L2 the joint assemblies shall withstand the pull-out force without being separated and shall show no signs of leakage when subjected to the subsequent leak tightness under internal hydrostatic pressure test as described in 52.1. 4.2.2.5 Leak tightness under intornal hydrostatic pressure while subject to bending When tested according to the method In 53.2.3 fittings shall show no signs Cl leakage or permanent distortion, 4.2.2.6 Leak before press If the manufacturer claims this feature, then when tested according to the method in 5.12.4 fIttings thall leak at least one water drop per second 4.2.3 RequIrements br gas applications 4.2.3.1 Leak tightness under Internal pneumatic pressure Fittings assessed as indicated In 4J.,2 and 41,3 are considered to be leak tight under Internal pneumatic pressure. 4.232 ResIstance to pull-out When tested according to the method In S.ILZ the joint assemblies shall withstand the pull-out force without being separated and shall show no signs of leakage when subsequently tested according to the method in 5.2,2 and/or 5.23 according to the application, fittings shall show no signs of leakage or permanent distortion. 4.2.33 Leak tightness under temperature cycling br luel gas applications When tested according to the test method in 53.11 fittings shall show no signs of leakage. 4.2.3.4 Leak bebore press If the manufacturer claims this feature, then when tested according to the method In 5.13.2 fittings shall leak at least one bubble per second when tested pocumaticalty.BS EN 1254-8 pdf download.