Description of BS EN 1254-2:2021 2021
This document specifies product characteristics, assessment
methods, compliance criteria of the test results and a designation
system for compression fittings for connecting with copper tubes.
Compression fittings exist with sealing elements - metallic and/or
non-metallic - called non manipulative (commonly referenced as type
A) and without sealing elements, called manipulative (commonly
referenced as type B). For the purposes of joining copper tubes,
the fitting ends have a nominal diameter from 6Â mm to 108Â mm. The
compression fittings are designed for a service lifetime up to
fifty years.
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.
Compression fitting ends, Type A, are used with copper tubes to ENÂ 1057 in all material
hardness conditions.
Compression fittings, Type A, will possibly require an internal
support when used with R220 (annealed) copper tube and the
manufacturer’s advice should be sought.
Compression fitting ends, Type B, are used with R220 (annealed)
or R250 (half-hard) copper tube to ENÂ 1057.
Compression fittings, Type B, may be used with R290 (hard)
copper tube and the manufacturer’s advice should be sought.
Adaptor fittings for use with copper tubes may combine
compression ends with fitting ends defined in the other parts of ENÂ 1254.
Compression fittings for use with copper tubes may also have
flanged end connections according to ENÂ 1092?3.
Compression fittings for use with copper tubes 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 standard are intended to be used
in:
-
liquid applications:
-
hot, cold or combined hot and cold water, including
systems according to
ENÂ 806 ;
-
closed heating systems according to
ENÂ 12828 ;
-
cooling systems.
-
drainage systems:
-
fire protection systems including sprinkler systems
according to
ENÂ 12845 ;
-
supply systems for points of consumption with liquid
fuels according to
ENÂ 12514 .
-
gas applications:
-
natural gas and liquefied petroleum gas systems with a
maximum operating pressure less than or equal to 5 bar
according to
ENÂ 1775 ;
-
compressed air systems.