BS EN 1254-6:2021 pdf download.Copper and copper alloys – Plumbing fittings Part 6: Push-fit fttings for use with metallic tubes, plastics and multilayer pipes.
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 AnnexA.
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.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 681-1:1996. Elastomeric seals – Materials requirements for pipe joint seals used in water and drainage applications- Part 1: Vulcanized rubber
EN 1057:2006+A1:2010, Copper and copper alloys – Seamless, round copper tubes for water and gas in sanitary and heating applications
EN 1254-20:2021, Copper and copper alloys- Plumbing fittings – Part 20: Definitions, thread dimensions, test methods, reference data and supporting information
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1254-20:2021 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
4 Product characteristics
4.1 Internal pressure
When tested according to the method in fittings shall show no signs of leakage or permanent distortion.
4.2 Tightness
4.2.1 Integrity of fabricated fitting bodies or having an ‘as cast’ microstructure
This requirement only applies to fitting bodies with an ‘as cast’ microstructure (excluding continuously cast materials) or fabricated by welding or brazing.
When tested according to the method in 511 fitting bodies shall show no visual indication of leakage.
4.2.2 Leak tightness under internal hydrostatic pressure
Fittings assessed as indicated in Ii. are considered to be leak tight under internal hydrostatic pressure.
4.2.3 Resistance to pull-out
When tested according to the method in S.32 the joint assemblies shall withstand the pull-out force without being separated and when subsequently tested according to the internal hydrostatic pressure test described in 52 fittings shall show no signs of leakage or permanent distortion.
4.2.4 Leak tightness under vibration
This requirement only applies for jointing with metallic tubes.
When tested according to the method in 5.13 fittings shall show no signs of leakage.
4.2.5 Leak tightness under static flexural force
This requirement only applies for jointing with metallic tubes and is not applicable on threaded ends.
When tested according to the method in 5.3.4 fittings shall show no signs of leakage or permanent distortion.
4.2.6 Leak tightness under internal hydrostatic pressure while subject to bending
This requirement only applies for jointing with multilayer or plastics pipes.
When tested according to the method in 5.3.5 fittings shall show no signs of leakage or permanent distortion.
4.2.7 Leak tightness under vacuum.
When tested according to the method in 5.3.6 the change in pressure shall not be greater than 0,05 bar at the conclusion of the test.
4.2.8 Leak tightness under temperature cycling
When tested according to the method in 5.3.7 fttings shall show no signs of leakage.BS EN 1254-6 pdf free download.