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BS EN 1254-2:2021

BS EN 1254-2:2021

$142.49

Copper and copper alloys. Plumbing fittings – Compression fittings for use with copper tubes

Published By Publication Date Number of Pages
BSI 2021 32
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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 6 mm to 108 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 EN 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 EN 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 EN 1254.

Compression fittings for use with copper tubes may also have flanged end connections according to EN 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:

  1. liquid applications:

    1. hot, cold or combined hot and cold water, including systems according to EN 806 ;

    2. closed heating systems according to EN 12828 ;

    3. cooling systems.

    4. drainage systems:

    5. fire protection systems including sprinkler systems according to EN 12845 ;

    6. supply systems for points of consumption with liquid fuels according to EN 12514 .

  2. gas applications:

    1. natural gas and liquefied petroleum gas systems with a maximum operating pressure less than or equal to 5 bar according to EN 1775 ;

    2. compressed air systems.

PDF Catalog

PDF Pages PDF Title
2 undefined
8 1 Scope
9 2 Normative references
10 3 Terms and definitions
4 Product characteristics
4.1 Internal pressure
4.1.1 For liquid applications
4.1.2 For fuel gas applications
4.1.3 For compressed air applications
4.2 Tightness
4.2.1 General requirements
4.2.1.1 Integrity of fabricated fitting bodies or having an ‘as cast’ microstructure
4.2.1.2 Resistance to pull-out
4.2.1.3 Leak tightness under static flexural force
4.2.2 Requirements for liquid applications
4.2.2.1 Leak tightness under internal hydrostatic pressure
11 4.2.2.2 Leak tightness under vacuum
4.2.2.3 Leak tightness under temperature cycling
4.2.3 Requirements for gas applications
4.2.3.1 Leak tightness under internal pneumatic pressure
4.2.3.2 Leak tightness under temperature cycling for fuel gas applications
4.2.3.3 Compression fitting with elastomeric seals for fuel gas application inside buildings
4.2.3.4 Compression fitting with elastomeric seals for fuel gas application outside buildings
4.3 Resistance to high temperature for fittings with elastomeric seals (for heating networks)
4.4 Release of dangerous substances
12 4.5 Durability
4.5.1 Durability of internal pressure: Resistance to stress corrosion
4.5.2 Durability of tightness
4.5.2.1 Resistance to dezincification
4.5.2.2 Resistance to pressure cycling
4.6 Wall thickness at threaded portions of adaptor fittings
4.7 Dimensions of tail pipe ends for swivel fittings
13 4.8 Dimensions of gas union connectors
4.9 Threaded end dimensions
4.10 Other adapter ends (not defined in EN 125420:2021)
4.11 Bore dimensions
4.12 Identity of elastomeric sealing material for liquid applications
4.13 Identity of elastomeric sealing material for gas applications
14 4.14 Tube abutment
4.15 Alignment of the fitting ends
4.16 Shapes for tightening systems
4.17 Surface condition
4.18 Plated or coated surfaces
15 5 Testing, assessment and sampling methods
5.1 General
5.1.1 Preparation of fittings for testing
5.1.2 Test temperature
5.1.3 Tolerances
5.2 Internal pressure
5.2.1 Internal hydrostatic pressure test
5.2.2 Internal pneumatic pressure test for fuel gas applications
16 5.2.3 Internal pressure tests for compressed air applications
5.3 Tightness
5.3.1 General tests
5.3.1.1 Integrity of fabricated fitting bodies or having an ‘as cast’ microstructure
5.3.1.2 Resistance to pull-out
17 5.3.1.3 Leak tightness under static flexural force
5.3.2 Tests for liquid applications
5.3.2.1 Leak tightness under vacuum
5.3.2.2 Leak tightness under temperature cycling
5.3.3 Tests for gas applications: Leak tightness under temperature cycling for gas applications
5.4 Durability
5.4.1 Durability of internal pressure: Resistance to stress corrosion
18 5.4.2 Durability of tightness
5.4.2.1 Resistance to dezincification
5.4.2.2 Resistance to pressure cycling
5.5 Wall thickness at threaded portions of adaptor fittings
5.5.1 Type testing
5.5.2 FPC testing
5.6 Dimensions of tail pipe ends for swivel fittings
5.7 Dimensions of gas union connectors
5.7.1 Type testing
5.7.2 FPC testing
19 5.8 Threaded end dimensions
5.9 Bore dimensions
5.10 Identity of elastomeric sealing material for liquid applications
5.11 Identity of elastomeric sealing material for gas applications
5.12 Alignment of the fitting ends
6 Evaluation of conformity
6.1 General
6.2 Type testing
6.2.1 General
20 6.2.2 Test samples, testing and compliance criteria
25 6.2.3 Test reports
6.3 Factory production control (FPC)
6.3.1 General
6.3.2 Equipment
6.3.2.1 Testing
6.3.2.2 Production
26 6.3.3 Raw materials and components
6.3.4 Product testing and evaluation
28 7 Designation
8 Marking, labelling and packaging
8.1 General
8.2 Additional marking
29 8.3 Dezincification resistant copper zinc alloys
30 Annex A (normative)Operating temperatures and corresponding maximum operating pressures

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BS EN 1254-2:2021
$142.49