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BS EN 1254-1:2021 – TC

BS EN 1254-1:2021 – TC

$186.33

Tracked Changes. Copper and copper alloys. Plumbing fittings – Capillary fittings for soldering or brazing to copper tubes

Published By Publication Date Number of Pages
BSI 2021 80
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This document specifies product characteristics, assessment methods, compliance criteria of the test results and a designation system for fittings with ends for capillary soldering or capillary brazing for connecting with copper tubes e.g. EN 1057, EN 13348, EN 13349, EN 12735?1, EN 12735?2 etc. For the purposes of joining copper tubes, the fitting ends have a nominal diameter from 6 mm to 108 mm. These fitting ends exist in three forms: end feed fittings, integral solder and integral brazing ring fitting ends. The 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.

The capillary fittings for soldering or brazing to copper tubes are used with solder alloys in accordance with alloys specified in EN ISO 9453 and brazing alloys in accordance with alloys specified in EN ISO 17672.

Adaptor fittings for use with copper tubes may combine capillary soldering or capillary brazing ends with fitting ends defined in the other parts of EN 1254.

Capillary fittings for soldering or brazing may also have flanged end connections according to EN 1092?3.

Capillary fittings for soldering or brazing 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:

  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. refrigeration systems;

    7. supply systems for points of consumption with liquid fuels according to EN 12514:2020 .

  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. gas line systems with an operating pressure exceeding 0,5 bar for industrial installations and exceeding 5 bar for industrial and non-industrial installations according to EN 15001?1 ;

    3. compressed air systems;

    4. medical gas systems according to EN ISO 7396 ;

    5. refrigeration systems.

PDF Catalog

PDF Pages PDF Title
1 compares BS EN 1254-1:2021
2 TRACKED CHANGES
Text example 1 — indicates added text (in green)
3 Contractual and legal considerations
Cross-references
4 Compliance with a British Standard does not of itself cannot confer immunity from legal obligations.
Amendments/corrigenda issued since publication
8 ForewordEuropean foreword
10 Introduction
13 3 Definitions
3.1
3.2
3.3
3.4
3.5
4 Requirements
4.1 General
14 4.2 Materials
Table 1 — Examples of commonly used materials
4.3 Dimensions and tolerances
15 Table 2 — Tolerances on the nominal diameter
Values in millimetres
16 4.4 Design and manufacture
17 Table 3 — Minimum lengths of engagement
18 Table 4 — Minimum bore
19 Table 5 — Minimum wall thickness
20 Table 6 — Maximum temperatures and pressures
21 4.5 Production test requirements
4.6 Type test requirements
4.2.1 Leak tightness under internal hydrostatic pressure
4.2.2 Integrity of fabricated fitting bodies or having an ‘as cast’ microstructure
22 4.4.1 Durability of internal pressure: Resistance to stress corrosion
4.4.2 Durability of tightness
4.4.2.1 Residual carbon contamination in the bore
4.4.2.1.1 General
4.4.2.1.2 Carbon film
4.4.2.1.3 Total carbon
4.4.2.2 Resistance to dezincification
24 Table 1 — Tolerances on the nominal diameter
25 Figure 1 — Minimum wall thickness
26 Table 2 — Minimum wall thickness
28 Figure 2 — Socket
Figure 3 — Male end
29 Table 3 — Minimum lengths of engagement
30 Figure 4 — Tube abutment
31 5 Test methods
5.1 Assembly dimensions
5.2 Leaktightness under internal hydrostatic pressure
5.3 Pressure test
32 Table 7 — Dimensions of go and not go plug gauges
33 5.4 Carbon in bore tests
5.5 Dezincification resistance test
5.6 Stress corrosion resistance test
34 Table 8 — Dimensions of go and not go ring gauges
35 5.1.1 Preparation of fittings for testing
5.1.2 Test temperature
5.1.3 Tolerances
36 Table 4 — Hydrostatic pressure test parameters
Table 5 — Pneumatic pressure test parameters
5.4.1 Durability of internal pressure: Resistance to stress corrosion
5.4.2 Durability of tightness
5.4.2.1 Carbon film
5.4.2.2 Total carbon
5.4.2.3 Resistance to dezincification
37 5.7.1 Type testing
5.7.2 FPC testing
5.9.1 Type testing
5.9.2 FPC testing
39 6.2.1 General
6.2.2 Test samples, testing and compliance criteria
40 Table 6 — Number of samples to be tested and compliance criteria
41 6.2.3 Test reports
6.3.1 General
42 6.3.2 Equipment
6.3.2.1 Testing
6.3.2.2 Production
6.3.3 Raw materials and components
6.3.4 Product testing and evaluation
43 Table 7 — Number of samples to be tested and compliance criteria
44 8 Documentation
8.1 Declaration of conformity
8.2 User instructions
46 A.1 Preparation of the test piece
A.2 Method
A.3 Detection and assessment of films
47 Annex B (normative)
B.1 Introduction
B.2 Procedure
B.3 Expression of results
Annex C (informative)
48 Table A.1 — Operating temperatures and maximum operating pressures for capillary soldering or capillary brazing fittings assembled to tubes
49 Bibliography
52 undefined
58 1 Scope
59 2 Normative references
3 Terms and definitions
60 4 Product characteristics
4.1 Internal pressure
4.2 Tightness
4.2.1 Leak tightness under internal hydrostatic pressure
4.2.2 Integrity of fabricated fitting bodies or having an ‘as cast’ microstructure
4.3 Release of dangerous substances
4.4 Durability
4.4.1 Durability of internal pressure: Resistance to stress corrosion
4.4.2 Durability of tightness
4.4.2.1 Residual carbon contamination in the bore
61 4.4.2.2 Resistance to dezincification
4.5 Dimensional tolerances of diameters to achieve reliable capillary flow
63 4.6 Wall thickness for ends for capillary soldering or capillary brazing to copper tubes
65 4.7 Wall thickness at threaded portions of adaptor fittings
4.8 Dimensions of tail pipe ends for swivel fittings
4.9 Dimensions of gas union connectors
4.10 Threaded end dimensions
4.11 Other adapter ends (not defined in EN 125420:2021)
4.12 Length of engagement
68 4.13 Bore dimensions
4.14 Tube abutment
4.15 Alignment of the fitting ends
4.16 Shapes for tightening systems
4.17 Surface condition
69 4.18 Surface cleanliness for medical gases
4.19 Plated or coated surfaces
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
70 5.3 Tightness: Integrity of fabricated fitting bodies or having an ‘as cast’ microstructure
5.4 Durability
5.4.1 Durability of internal pressure: Resistance to stress corrosion
5.4.2 Durability of tightness
5.4.2.1 Carbon film
5.4.2.2 Total carbon
5.4.2.3 Resistance to dezincification
5.5 Dimensional tolerances of diameters
5.6 Wall thickness for ends for capillary soldering or capillary brazing to copper tubes
71 5.7 Wall thickness at threaded portions of adaptor fittings
5.7.1 Type testing
5.7.2 FPC testing
5.8 Dimensions of tail pipe ends for swivel fittings
5.9 Dimensions of gas union connectors
5.9.1 Type testing
5.9.2 FPC testing
5.10 Threaded end dimensions
5.11 Length of engagement
5.12 Bore dimension
72 5.13 Alignment of the fitting ends
6 Evaluation of conformity
6.1 General
6.2 Type testing
6.2.1 General
6.2.2 Test samples, testing and compliance criteria
74 6.2.3 Test reports
6.3 Factory production control (FPC)
6.3.1 General
75 6.3.2 Equipment
6.3.2.1 Testing
6.3.2.2 Production
6.3.3 Raw materials and components
6.3.4 Product testing and evaluation
77 7 Designation
8 Marking, labelling and packaging
8.1 General
8.2 Dezincification resistant copper zinc alloys
78 Annex A (normative)Operating temperatures and corresponding maximum operating pressures

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