Copper and copper alloys - Plumbing fittings - Part 1: Capillary fittings for soldering or brazing to copper tubes

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 size range from 6 mm to 108 mm. These fitting ends exist in three forms: end feed fittings and 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 standard are intended to be used in:
a)   liquid applications:
-   hot, cold or combined hot and cold water systems according to EN 806;
-   closed heating systems according to EN 12828 and cooling systems;
-   drainage systems;
-   sprinkler systems according to EN 12845;
-   refrigeration systems;
b)   gas applications:
-   natural gas and liquefied petroleum gas systems with a maximum operating pressure less than or equal to 5 bar according to EN 1775;
-   compressed air systems;
-   medical gas systems according to EN ISO 7396;
-   refrigeration systems.

Kupfer und Kupferlegierungen - Fittings - Teil 1: Weich- und Kapillarlötfittings für Kupferrohre (Weich- und Hartlöten)

Dieses Dokument legt Produkteigenschaften, Bewertungsverfahren, Konformitätskriterien der Prüfergebnisse und ein Bezeichnungssystem für Kapillarfittings zum Weich- bzw. Hartlöten von Kupferrohren fest, z. B. EN 1057, EN 13348, EN 13349, EN 12735-1, EN 12735- usw. Zum Verbinden von Kupferrohren haben die Fittingenden einen Größenbereich von 6 mm bis 108 mm. Diese Fittingenden gibt es in drei Formen: Lötfittings, Fittings mit integriertem Weichlötring und Fittings mit integriertem Hartlötring. Die Fittings sind für eine Lebensdauer von bis zu fünfzig Jahren ausgelegt.
Die Fittings werden bis zu den in Anhang A angegebenen Betriebstemperaturen und zugehörigen maximalen Betriebsdrücken eingesetzt.
Dieses Dokument gilt für Fittings aus Kupferlegierungen. Eine nicht vollständige Liste dieser Kupferlegierungen ist in CEN/TS 13388 enthalten.
Die Kapillarfittings zum Weich- bzw. Hartlöten von Kupferrohren werden mit Weichloten nach den in EN ISO 9453 spezifizierten Legierungen und Hartloten nach den in EN ISO 17672 spezifizierten Legierungen verwendet.
Übergangsfittings für Kupferrohre dürfen Enden zum Weich- bzw. Hartlöten mit in den anderen Teilen der EN 1254 definierten Fittingenden kombinieren.
Kapillarfittings zum Weich- bzw. Hartlöten dürfen auch Flanschendanschlüsse nach EN 1092-3 aufweisen.
Kapillarfittings zum Weich- bzw. Hartlöten dürfen auch galvanische oder andere dekorative Oberflächen-überzüge aufweisen.
Fittings können durch Bearbeiten, Metallumformen, Gießen oder Fertigen hergestellt werden.
Die unter diese Norm fallenden Produkte sind für den Einsatz bestimmt in:
a)   Flüssigkeitsanwendungen:
-   Warm-, Kalt- oder kombinierte Warm-/Kaltwassersysteme nach EN 806;
-   geschlossene Heizsysteme nach EN 12828 und Kühlsysteme;
-   Entwässerungssysteme;
-   Sprinkleranlagen nach EN 12845;
-   Kältetechnik;
b)   Gasanwendungen:
-   Erdgas- und Flüssiggasanlagen mit einem maximalen Betriebsdruck von weniger als oder gleich 5 bar nach EN 1775;
-   Druckluftsysteme;
-   Systeme für medizinische Gase nach EN ISO 7396;
-   Kältetechnik.

Cuivre et alliages de cuivre - Raccords - Partie 1 : Raccords à braser par capillarité pour tubes en cuivre

Le présent document spécifie les caractéristiques de produit, les méthodes d'évaluation, les critères de conformité des résultats d'essais et un système de désignation pour les raccords à extrémités à braser (brasage tendre ou fort) par capillarité pour le raccordement de tubes en cuivre conformes, par exemple, aux EN 1057, EN 13348, EN 13349, EN 12735-1, EN 12735-2 etc. Pour l'assemblage de tubes en cuivre, les extrémités des raccords ont une gamme de dimensions comprise entre 6 mm et 108 mm. Ces extrémités de raccords existent sous trois formes : raccords à extrémité d'alimentation et raccords à anneau de brasure tendre incorporé, et raccords à anneau de brasure forte incorporé. Les raccords sont conçus pour une durée de vie en service supérieure à 50 ans.
Les raccords sont utilisés jusqu'aux températures de service et aux pressions de service maximales correspondantes indiquées à l'Annexe A.
Le présent document s'applique aux raccords en alliage de cuivre. Une liste non exhaustive de ces alliages de cuivre figure dans la CEN/TS 13388.
Les raccords à braser (brasage tendre ou fort) par capillarité pour tubes en cuivre sont utilisés avec des alliages de brasage tendre conformément aux alliages spécifiés dans l’EN ISO 9453 et des alliages de brasage fort conformément aux alliages spécifiés dans l’EN ISO 17672.
Les raccords adaptateurs utilisés avec des tubes en cuivre peuvent combiner des extrémités à braser (brasage tendre ou fort) par capillarité avec des extrémités définies dans les autres parties de l’EN 1254.
Les raccords à braser (brasage tendre ou fort) par capillarité peuvent également comporter des raccordements à brides conformément à l’EN 1092-3.
Les raccords à braser (brasage tendre ou fort) par capillarité peuvent également avoir une surface plaquée ou un autre revêtement de surface décoratif.
Les raccords peuvent être fabriqués par usinage, formage des métaux, moulage ou mécanosoudage.
Les produits couverts par la présente norme sont destinés à être utilisés dans :
a)   les applications liquides :
-   les systèmes d'eau chaude, d'eau froide ou d'eau chaude et d'eau froide combinées conformes à l’EN 806 ;
-   les systèmes de chauffage fermés conformes à l'EN 12828 et les systèmes de refroidissement ;
-   les systèmes de purge ;
-   les systèmes d'extinction de type sprinkleur conformes à l’EN 12845 ;
-   les systèmes réfrigération ;
b)   les applications de gaz :
-   les systèmes fonctionnant au gaz naturel et des systèmes fonctionnant au gaz de pétrole liquéfiés avec une pression maximale de service inférieure ou égale à 5 bar, conformément à l'EN 1775 ;
-   les systèmes d’air comprimé ;
-   les systèmes de distribution de gaz médicaux conformes à l’EN ISO 7396 ;
-   les systèmes réfrigération.

Baker in bakrove zlitine - Fitingi - 1. del: Fitingi za kapilarno mehko in trdo lotanje na bakrene cevi

General Information

Status
Published
Public Enquiry End Date
04-Sep-2019
Publication Date
03-Jun-2021
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
03-Jun-2021
Due Date
08-Aug-2021
Completion Date
04-Jun-2021

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Standards Content (sample)

SLOVENSKI STANDARD
SIST EN 1254-1:2021
01-julij-2021
Nadomešča:
SIST EN 1254-1:1999

Baker in bakrove zlitine - Fitingi - 1. del: Fitingi za kapilarno mehko in trdo lotanje

na bakrene cevi

Copper and copper alloys - Plumbing fittings - Part 1: Capillary fittings for soldering or

brazing to copper tubes

Kupfer und Kupferlegierungen - Fittings - Teil 1: Weich- und Kapillarlötfittings für

Kupferrohre (Weich- und Hartlöten)

Cuivre et alliages de cuivre - Raccords - Partie 1 : Raccords à braser par capillarité pour

tubes en cuivre
Ta slovenski standard je istoveten z: EN 1254-1:2021
ICS:
23.040.40 Kovinski fitingi Metal fittings
77.150.30 Bakreni izdelki Copper products
SIST EN 1254-1:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 1254-1:2021
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SIST EN 1254-1:2021
EN 1254-1
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2021
EUROPÄISCHE NORM
ICS 23.040.40 Supersedes EN 1254-1:1998
English Version
Copper and copper alloys - Plumbing fittings - Part 1:
Capillary fittings for soldering or brazing to copper tubes

Cuivre et alliages de cuivre - Raccords - Partie 1 : Kupfer und Kupferlegierungen - Fittings - Teil 1:

Raccords à braser par capillarité pour tubes en cuivre Weich- und Hartkapillarlötfittings für Kupferrohre

This European Standard was approved by CEN on 23 November 2020.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1254-1:2021 E

worldwide for CEN national Members.
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SIST EN 1254-1:2021
EN 1254-1:2021 (E)
Contents Page

European foreword ....................................................................................................................................................... 4

Introduction .................................................................................................................................................................... 5

1 Scope .................................................................................................................................................................... 6

2 Normative references .................................................................................................................................... 7

3 Terms and definitions ................................................................................................................................... 7

4 Product characteristics ................................................................................................................................. 8

4.1 Internal pressure ............................................................................................................................................ 8

4.2 Tightness ............................................................................................................................................................ 8

4.3 Release of dangerous substances .............................................................................................................. 8

4.4 Durability ........................................................................................................................................................... 8

4.5 Dimensional tolerances of diameters to achieve reliable capillary flow .................................... 9

4.6 Wall thickness for ends for capillary soldering or capillary brazing to copper tubes ........ 11

4.7 Wall thickness at threaded portions of adaptor fittings ................................................................ 13

4.8 Dimensions of tail pipe ends for swivel fittings ................................................................................ 13

4.9 Dimensions of gas union connectors .................................................................................................... 13

4.10 Threaded end dimensions ........................................................................................................................ 13

4.11 Other adapter ends (not defined in EN 1254-20:2021) ................................................................. 13

4.12 Length of engagement ................................................................................................................................ 13

4.13 Bore dimensions ........................................................................................................................................... 16

4.14 Tube abutment .............................................................................................................................................. 16

4.15 Alignment of the fitting ends .................................................................................................................... 16

4.16 Shapes for tightening systems ................................................................................................................. 16

4.17 Surface condition ......................................................................................................................................... 16

4.18 Surface cleanliness for medical gases ................................................................................................... 17

4.19 Plated or coated surfaces .......................................................................................................................... 17

5 Testing, assessment and sampling methods ...................................................................................... 17

5.1 General ............................................................................................................................................................. 17

5.2 Internal pressure ......................................................................................................................................... 17

5.3 Tightness: Integrity of fabricated fitting bodies or having an 'as cast' microstructure ..... 18

5.4 Durability ........................................................................................................................................................ 18

5.5 Dimensional tolerances of diameters ................................................................................................... 18

5.6 Wall thickness for ends for capillary soldering or capillary brazing to copper tubes ........ 18

5.7 Wall thickness at threaded portions of adaptor fittings ................................................................ 19

5.8 Dimensions of tail pipe ends for swivel fittings ................................................................................ 19

5.9 Dimensions of gas union connectors .................................................................................................... 19

5.10 Threaded end dimensions ........................................................................................................................ 19

5.11 Length of engagement ................................................................................................................................ 19

5.12 Bore dimension ............................................................................................................................................. 19

5.13 Alignment of the fitting ends .................................................................................................................... 20

6 Evaluation of conformity ........................................................................................................................... 20

6.1 General ............................................................................................................................................................. 20

6.2 Type testing .................................................................................................................................................... 20

6.3 Factory production control (FPC) .......................................................................................................... 22

7 Designation..................................................................................................................................................... 25

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SIST EN 1254-1:2021
EN 1254-1:2021 (E)

8 Marking, labelling and packaging ........................................................................................................... 25

8.1 General ............................................................................................................................................................. 25

8.2 Dezincification resistant copper zinc alloys ....................................................................................... 25

Annex A (normative) Operating temperatures and corresponding maximum operating

pressures ......................................................................................................................................................... 26

Bibliography ................................................................................................................................................................. 27

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SIST EN 1254-1:2021
EN 1254-1:2021 (E)
European foreword

This document (EN 1254-1:2021) has been prepared by Technical Committee CEN/TC 133 “Copper and

copper alloys”, the secretariat of which is held by DIN.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by November 2021, and conflicting national standards

shall be withdrawn at the latest by November 2021.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 1254-1:1998.
The main changes compared to EN 1254-1:1998 are:
— separation of test methods into part 20.

This part of the standard (EN 1254-1) should be read in conjunction with EN 1254-20:2021.

EN 1254 comprises the following parts under the general title “Copper and copper alloys — Plumbing

fittings”:
— Part 1: Capillary fittings for soldering or brazing to copper tubes
— Part 2: Compression fittings for use with copper tubes
— Part 3: Compression fittings for use with plastics and multilayer pipes
— Part 4: Threaded fittings
— Part 5: Capillary fittings with short ends for brazing to copper tubes

— Part 6: Push-fit fittings for use with metallic tubes, plastics and multilayer pipes

— Part 7: Press fittings for use with metallic tubes
— Part 8: Press fittings for use with plastics and multilayer pipes

— Part 20: Definitions, thread dimensions, test methods, reference data and supporting information

According to the CEN-CENELEC Internal Regulations, the national standards organisations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,

Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of

North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the

United Kingdom.
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SIST EN 1254-1:2021
EN 1254-1:2021 (E)
Introduction

Products complying with this document may be used for several fluids including the transport of water

intended for human consumption if they comply with the relevant national, regional or local regulatory

provisions applicable in the place of use.
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SIST EN 1254-1:2021
EN 1254-1:2021 (E)
1 Scope

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:
a) 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;
— refrigeration systems;

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

b) gas applications:

— natural gas and liquefied petroleum gas systems with a maximum operating pressure less than

or equal to 5 bar according to EN 1775;

— 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;

— compressed air systems;
— medical gas systems according to EN ISO 7396;
— refrigeration systems.
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SIST EN 1254-1:2021
EN 1254-1:2021 (E)
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 723, Copper and copper alloys — Combustion method for determination of the carbon content on the

inner surface of copper tubes or fittings

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

EN 10226-3, Pipes threads where pressure tight joint are made on the threads — Part 3: Verification by

means of limit gauges

EN 12502-2, Protection of metallic materials against corrosion — Guidance on the assessment of

corrosion likelihood in water distribution and storage systems - Part 2: Influencing factors for copper and

copper alloys

EN ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method (ISO 6506-1)

EN ISO 6507-1, Metallic materials — Vickers hardness test — Part 1: Test method (ISO 6507-1)

EN ISO 9453, Soft solder alloys — Chemical compositions and forms (ISO 9453)
EN ISO 17672, Brazing — Filler metals (ISO 17672)

ISO 7-2, Pipe threads where pressure-tight joints are made on the threads — Part 2: Verification by means

of limit gauges

ISO 228-2, Pipe threads where pressure-tight joints are not made on the threads — Part 2: Verification by

means of limit gauges

ISO 2859-1:1999, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed

by acceptance quality limit (AQL) for lot-by-lot inspection
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
---------------------- Page: 9 ----------------------
SIST EN 1254-1:2021
EN 1254-1:2021 (E)
4 Product characteristics
4.1 Internal pressure

When tested according to the method in 5.2 fittings shall show no signs of leakage or permanent

distortion.
4.2 Tightness
4.2.1 Leak tightness under internal hydrostatic pressure

Fittings assessed as indicated in 4.1 are considered to be leak tight under internal hydrostatic pressure.

4.2.2 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 5.3 fitting bodies shall show no visual indication of leakage.

4.3 Release of dangerous substances

National regulations on dangerous substances may require verification and declaration on release, and

sometimes content, when construction products covered by this document are placed on those markets.

In the absence of European harmonized test methods, verification and declaration on release/content

should be done taking into account national provisions in the place of use.

NOTE An informative database covering European and national provisions on dangerous substances is

http://ec.europa.eu/growth/tools-
available at the Construction website on EUROPA accessed through:
databases/cp-ds.
4.4 Durability
4.4.1 Durability of internal pressure: Resistance to stress corrosion

Fittings manufactured from copper and copper-tin-zinc alloys (CuSnZnPb) shall be considered to be

resistant to stress corrosion according to EN 12502-2 and copper-zinc-silicon alloys containing ≥ 2 % Si

are also considered to be resistant.

Fittings manufactured from CuZn-alloys shall be considered to be resistant to stress corrosion when the

product has a hardness HBW 2,5/62,5 ≤ 110 measured according to EN ISO 6506-1 or a hardness

HV ≤ 134 measured according to EN ISO 6507-1.

Fittings manufactured from copper alloys with a zinc content of 10 % or greater not mentioned above

shall be tested and assessed according to 5.4.1, and shall show no evidence of cracking.

4.4.2 Durability of tightness
4.4.2.1 Residual carbon contamination in the bore
4.4.2.1.1 General
Applies only to copper fittings and does not apply to copper alloy fittings.
4.4.2.1.2 Carbon film
When tested according to 5.4.2.1 there shall not be any visible carbon film.
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SIST EN 1254-1:2021
EN 1254-1:2021 (E)
4.4.2.1.3 Total carbon

When tested according to 5.4.2.2 the maximum total carbon level on internal surfaces shall not exceed

1,0 mg/dm .
4.4.2.2 Resistance to dezincification

This requirement only applies where a fitting is declared to be resistant to dezincification.

The resistance to dezincification of alloy fittings can be obtained by the correct material selection and

processing of that material.

Alloys containing 15 % or less zinc provide a good resistance to dezincification and do not need to be

tested.

Representative material samples, prior to machining, shall be tested. When tested according to 5.4.2.3,

the mean and maximum depth of dezincification in any direction shall be expressed in µm and shall

meet the acceptance criteria listed below for resistance to dezincification:
— for grade A: maximum 200 µm;
— for grade B: mean not to exceed 200 µm and maximum not to exceed 400 µm.

If any of the test pieces do not meet the criteria for the chosen grade, a second lot of test samples from

the same batch shall be selected and the test repeated. If any of the second lot of test pieces fails, then

the batch represented shall be deemed not to conform to the requirements of this document.

If the user needs to heat a dezincification resistant alloy fitting to a temperature exceeding 550 °C for

example for brazing, advice should be sought from the manufacturer.
4.5 Dimensional tolerances of diameters to achieve reliable capillary flow

In order to achieve the capillary flow of a solder or brazing alloy when making a connection, the

dimensions of a socket or male end shall be tightly controlled.

When assessed according to the method specified in 5.5, the diameter shall be within the tolerances

expressed in Table 1 for the relevant diameters.
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SIST EN 1254-1:2021
EN 1254-1:2021 (E)
Table 1 — Tolerances on the nominal diameter
Values in millimetres
Nominal diameter Tolerances on the mean diameter Resulting diametrical
D with respect to the nominal diameter D difference
Outside diameter Inside diameter max. min.
of male end of socket
10
12
+0,04 +0,15
0,20 0,02
14
−0,05 +0,06
14,7
15
16
18
21
22
+0,05 +0,18
25 0,24 0,02
−0,06 +0,07
27,4
28
34
35
40
+0,06 +0,23
0,30 0,03
40,5
−0,07 +0,09
42
53,6
54
64
66,7
70
76,1 +0,07 +0,33
0,41 0,03
80 −0,08 +0,10
88,9
106
108

Arithmetical mean of two diameters at right angles in a cross-section taken anywhere on the length of the

socket or of the male end except under indented marking or in the solder or brazing alloy groove.

The soldering or brazing of tubes and fittings for these diameters requires more skilled techniques (further

information is available in EN 1254-20:2021, Annex A).
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SIST EN 1254-1:2021
EN 1254-1:2021 (E)

4.6 Wall thickness for ends for capillary soldering or capillary brazing to copper tubes

When measured according to the method specified in 5.6, the minimum wall thickness shall be as

expressed in Table 2 for the relevant diameters and different forms of the material.

The minimum wall thickness requirements do not apply under embossed marking on the socket end.

In the case of integral solder or brazing ring fittings where a groove is made within the soldering or

brazing length, the minimum wall thickness measured within or immediately adjacent the solder

groove (see Figure 1) shall be in accordance with dimension e' in Table 2.

end feed fitting integral solder or brazing ring fitting integral solder or brazing ring

fitting
Key
D nominal diameter
e minimum wall thickness

e' minimum wall thickness within or immediately adjacent the solder or brazing ring groove

Figure 1 — Minimum wall thickness
---------------------- Page: 13 ----------------------
SIST EN 1254-1:2021
EN 1254-1:2021 (E)
Table 2 — Minimum wall thickness
Dimensions in millimetres
Nominal Minimum wall thickness
diameter
Wrought coppers Wrought copper alloys Cast coppers and copper
and continuous cast bar alloys
D e e' e e' e e'
8 1,0 0,55 1,0 0,65
10 0,6 0,54
1,1 0,60 1,1 0,71
14,7
15 0,7 0,63 1,2 0,66 1,2 0,78
18 0,8 0,72
1,4 0,91
1,4 0,77
22 1,5 0,97
25 0,9 0,81
1,6 1,04
27,4
1,5 0,82
34 1,8 1,17
1,0 0,90 1,6 0,88
40,5 1,1 0,99 1,8 0,99 2,0 1,30
53,6
1,2 1,08 1,9 1,04 2,3 1,49
2,0 1,10 2,4 1,56
66,7 1,4 1,26
70 2,3 1,26 2,6 1,69
76,1 1,6 1,44 2,6 1,43 2,8 1,82
80 2,8 1,54 2,9 1,88
1,8 1,62
88,9 2,9 1,59 3,1 2,01
106
2,1 1,89 3,3 1,80 3,5 2,27
108
---------------------- Page: 14 ----------------------
SIST EN 1254-1:2021
EN 1254-1:2021 (E)
4.7 Wall thickness at threaded portions of adaptor fittings
This requirement only applies to adaptor fittings with an interface thread.

When assessed according to the method specified in 5.7 the minimum wall thickness at the interface

thread shall be as expressed in EN 1254-20:2021, 4.1 for the relevant diameters.
4.8 Dimensions of tail pipe ends for swivel fittings
This requirement only applies to tail pipe ends for swivel fittings.

When assessed according to the method specified in 5.8 the dimensions shall be as expressed in

EN 1254-20:2021, 4.2 for the thread size.
4.9 Dimensions of gas union connectors
This requirement only applies to fittings with gas union connectors.

When assessed according to the method specified in 5.9 the dimensions shall be as expressed in

EN 1254-20:2021, 4.3 for corresponding nominal size.
4.10 Threaded end dimensions
This requirement only applies to fitting bodies with threaded ends.

When assessed according to the method specified in 5.10 the thread shall be in accordance with

EN 1254-20:2021, 4.4.
4.11 Other adapter ends (not defined in EN 1254-20:2021)

Other adapter ends, when assembled in accordance with the manufacturer's instructions and pressure

tested according to the method in 5.2 shall show no signs of leakage or permanent distortion. When re-

tested in accordance with the test method in 5.2 after disconnection and reconnection, it shall again

show no signs of leakage or permanent distortion. If after disconnection the sealing element shows

signs of damage, it shall be replaced before the second test.
4.12 Length of engagement

When assessed according to the method specified in 5.11, the minimum length of engagement shall be

as expressed in Table 3 for the relevant diameters.

The length L for integral solder or brazing ring socket ends shall not include the width of the solder or

brazing alloy groove (see Figure 2b). The actual groove shape is un-important providing that it contains

sufficient solder or braze to produce a sound joint on assembly with the correct size of tube.

Male ends intended for use with integral ring sockets shall include an allowance for the width of the

solder or brazing alloy groove.

When the male end diameter is less than the fitting diameter (see Figure 3), the length of the male end

shall be increased to L (see Table 3).
---------------------- Page: 15 ----------------------
SIST EN 1254-1:2021
EN 1254-1:2021 (E)
L = L + L
1 A Ā
end feed fitting integral solder or brazing ring
fitting
Key
D nominal diameter
L length of the socket end
L length from the groove to the inner end of the socket end
LĀ length from the groove to the outer end of the socket end
Figure 2 — Socket
Key
D nominal diameter

L1 length of the male when the male end diameter is bigger than the fitting diameter

L length of the male when the male end diameter is less than the fitting diameter

Figure 3 — Male end
---------------------- Page: 16 ----------------------
SIST EN 1254-1:2021
EN 1254-1:2021 (E)
Table 3 — Minimum lengths of engagement
Dimensions in millimetres
Nominal diameter Length of engagement
L L
1 2
6 5,8 7,8
8 6,8 8,8
10 7,8 9,8
12 8,6 10,6
14 10,6 12,6
14,7 10,6 12,6
15 10,6 12,6
16 10,6 12,6
18 12,6 14,6
21 15,4 17,4
22 15,4 17,4
25 16,4 18,4
27,4 18,4 20,4
28 18,4 20,4
34 23 25
35 23 25
40 27 29
40,5 27 29
42 27 29
53,6 32 34
54 32 34
64 32,5 34,5
66,7 33,5 36,5
70 33,5 36,5
76,1 33,5 36,5
80 35,5 38,5
88,9 37,5 40,5
106 47,5 51,5
108 47,5 51,5
---------------------- Page: 17 ----------------------
SIST EN 1254-1:2021
EN 1254-1:2021 (E)
4.13 Bore dimensions
To minimize flow resistance, minimum bore dimensions are required.

When assessed according to the test method in 5.12, the minimum bore of the fitting shall be greater or

equal to the values expressed in EN 1254-20:2021, 4.5, Table 9, for the relevant nominal diameter.

For unequal-ended or adaptor fittings, the smallest diameter shall apply provided that this diameter

does not restrict other outlets.
Bores at threaded portions of fittings shall not restrict other outlets.
4.14 Tube abutment
This requirement does not apply to threaded ends.

Fitting ends are usually manufactured with an abutment to limit tube insertion (see Figure 4) and to

ensure that the minimum length of engagement between tube and fitting is satisfied.

Fittings may be produced for s
...

SLOVENSKI STANDARD
oSIST prEN 1254-1:2019
01-september-2019

Baker in bakrove zlitine - Fitingi - 1. del: Fitingi za kapilarno mehko in trdo lotanje

na bakrene cevi

Copper and copper alloys - Plumbing fittings - Part 1: Capillary fittings for soldering or

brazing to copper tubes

Kupfer und Kupferlegierungen - Fittings - Teil 1: Weich- und Hartkapillarlötfittings für

Kupferrohre

Cuivre et alliages de cuivre - Raccords - Partie 1 : Raccords à braser par capillarité pour

tubes en cuivre
Ta slovenski standard je istoveten z: prEN 1254-1
ICS:
23.040.40 Kovinski fitingi Metal fittings
77.150.30 Bakreni izdelki Copper products
oSIST prEN 1254-1:2019 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 1254-1:2019
---------------------- Page: 2 ----------------------
oSIST prEN 1254-1:2019
DRAFT
EUROPEAN STANDARD
prEN 1254-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2019
ICS 23.040.40 Will supersede EN 1254-1:1998
English Version
Copper and copper alloys - Plumbing fittings - Part 1:
Capillary fittings for soldering or brazing to copper tubes

Cuivre et alliages de cuivre - Raccords - Partie 1 : Kupfer und Kupferlegierungen - Fittings - Teil 1:

Raccords à braser par capillarité pour tubes en cuivre Weich- und Hartkapillarlötfittings für Kupferrohre

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 133.

If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations

which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other

language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC

Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1254-1:2019 E

worldwide for CEN national Members.
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oSIST prEN 1254-1:2019
prEN 1254-1:2019 (E)
Contents Page

European foreword ....................................................................................................................................................... 4

Introduction .................................................................................................................................................................... 5

1 Scope .................................................................................................................................................................... 6

2 Normative references .................................................................................................................................... 7

3 Terms and definitions ................................................................................................................................... 8

4 Product characteristics ................................................................................................................................. 8

4.1 Internal pressure ............................................................................................................................................ 8

4.2 Tightness ............................................................................................................................................................ 8

4.2.1 Leak tightness under internal hydrostatic pressure ......................................................................... 8

4.2.2 Integrity of fabricated fitting bodies or having an 'as cast' microstructure .............................. 8

4.3 Release of dangerous substances .............................................................................................................. 8

4.4 Durability ........................................................................................................................................................... 8

4.4.1 Durability of internal pressure .................................................................................................................. 8

4.4.2 Durability of tightness ................................................................................................................................... 9

4.5 Dimensional tolerances of diameters to achieve reliable capillary flow .................................... 9

4.6 Wall thickness for ends for capillary soldering or capillary brazing to copper tubes ........ 11

4.7 Wall thickness at threaded portions of adaptor fittings ................................................................ 13

4.8 Dimensions of tail pipe ends for swivel fittings ................................................................................ 13

4.9 Dimensions of gas union connectors .................................................................................................... 13

4.10 Threaded end dimensions ........................................................................................................................ 13

4.11 Other adapter ends (not defined in prEN 1254-20:2019) ............................................................. 13

4.12 Length of engagement ................................................................................................................................ 14

4.13 Bore dimensions ........................................................................................................................................... 16

4.14 Tube abutment .............................................................................................................................................. 18

4.15 Alignment of the fitting ends .................................................................................................................... 18

4.16 Shapes for tightening systems ................................................................................................................. 19

4.17 Surface condition ......................................................................................................................................... 19

4.18 Surface cleanliness for medical gases ................................................................................................... 19

4.19 Plated or coated surfaces .......................................................................................................................... 19

5 Testing, assessment and sampling methods ...................................................................................... 19

5.1 General ............................................................................................................................................................. 19

5.1.1 Preparation of fittings for testing........................................................................................................... 19

5.1.2 Test temperature ......................................................................................................................................... 19

5.2 Internal pressure ......................................................................................................................................... 19

5.3 Tightness ......................................................................................................................................................... 20

5.3.1 Integrity of fabricated fitting bodies or having an 'as cast' microstructure ........................... 20

5.4 Durability ........................................................................................................................................................ 20

5.4.1 Durability of internal pressure ............................................................................................................... 20

5.4.2 Durability of tightness ................................................................................................................................ 20

5.5 Dimensional tolerances of diameters ................................................................................................... 20

5.6 Wall thickness for ends for capillary soldering or capillary brazing to copper tubes ........ 21

5.7 Wall thickness at threaded portions of adaptor fittings ................................................................ 21

5.7.1 Type testing .................................................................................................................................................... 21

5.7.2 FPC testing ...................................................................................................................................................... 21

5.8 Dimensions of tail pipe ends for swivel fittings ................................................................................ 21

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oSIST prEN 1254-1:2019
prEN 1254-1:2019 (E)

5.9 Dimensions of gas union connectors ..................................................................................................... 21

5.9.1 Type testing .................................................................................................................................................... 21

5.9.2 FPC testing ....................................................................................................................................................... 21

5.10 Threaded end dimensions ......................................................................................................................... 21

5.11 Length of engagement ................................................................................................................................. 21

5.12 Bore dimension ............................................................................................................................................. 21

5.13 Alignment of the fitting ends .................................................................................................................... 22

6 Assessment and verification of constancy of performance - AVCP ............................................. 22

6.1 General ............................................................................................................................................................. 22

6.2 Type testing .................................................................................................................................................... 22

6.2.1 General ............................................................................................................................................................. 22

6.2.2 Test samples, testing and compliance criteria ................................................................................... 23

6.2.3 Test reports .................................................................................................................................................... 25

6.3 Factory production control (FPC) ........................................................................................................... 25

6.3.1 General ............................................................................................................................................................. 25

6.3.2 Requirements ................................................................................................................................................. 25

6.3.3 Product specific requirements ................................................................................................................ 28

6.3.4 Procedure for modifications ..................................................................................................................... 29

6.3.5 One-off products, pre-production products (e.g. prototypes) and products produced

in very low quantity ..................................................................................................................................... 29

7 Classification and designation ................................................................................................................. 30

8 Marking, labelling and packaging ........................................................................................................... 30

8.1 General ............................................................................................................................................................. 30

8.2 Dezincification resistant copper zinc alloys ....................................................................................... 31

Annex A (normative) Operating temperatures and corresponding maximum operating

pressures ......................................................................................................................................................... 32

Bibliography ................................................................................................................................................................. 33

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oSIST prEN 1254-1:2019
prEN 1254-1:2019 (E)
European foreword

This document (prEN 1254-1:2019) has been prepared by Technical Committee CEN/TC 133 “Copper

and copper alloys”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 1254-1:1998.

This part of the standard (EN 1254-1) should be read in conjunction with prEN 1254-20:2019.

EN 1254 comprises the following parts under the general title “Copper and copper alloys — Plumbing

fittings”:
— Part 1: Capillary fittings for soldering or brazing to copper tubes
— Part 2: Compression fittings for use with copper tubes
— Part 3: Compression fittings for use with plastics and multilayer pipes
— Part 4: Threaded fittings
— Part 5: Capillary fittings with short ends for brazing to copper tubes

— Part 6: Push-fit fittings for use with metallic tubes, plastics and multilayer pipes

— Part 7: Press fittings for use with metallic tubes
— Part 8: Press fittings for use with plastics and multilayer pipes

— Part 20: Definitions, thread dimensions, test methods, reference data and supporting information

The main changes to EN 1254-1:1998 are:
— separation of test methods into part 20.
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oSIST prEN 1254-1:2019
prEN 1254-1:2019 (E)
Introduction

Products complying with this European standard may be used for the transport of water intended for

human consumption if they comply with the relevant national, regional or local regulatory provisions

applicable in place of use.
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oSIST prEN 1254-1:2019
prEN 1254-1:2019 (E)
1 Scope

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 size range from 6 mm to 108 mm. These fitting

ends exist in three forms: end feed fittings and 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 standard are intended to be used in:
a) liquid applications:
— hot, cold or combined hot and cold water systems according to EN 806;
— closed heating systems according to EN 12828 and cooling systems;
— drainage systems;
— sprinkler systems according to EN 12845;
— refrigeration systems;
b) gas applications:

— natural gas and liquefied petroleum gas systems with a maximum operating pressure less than

or equal to 5 bar according to EN 1775;
— compressed air systems;
— medical gas systems according to EN ISO 7396;
— refrigeration systems.
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oSIST prEN 1254-1:2019
prEN 1254-1:2019 (E)
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 723, Copper and copper alloys — Combustion method for determination of the carbon content on the

inner surface of copper tubes or fittings

EN 806 (series), Specifications for installations inside buildings conveying water for human consumption

EN 1057:2006+A1:2010, Copper and copper alloys — Seamless, round copper tubes for water and gas in

sanitary and heating applications

EN 1092-3, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN

designated — Part 3: Copper alloy flanges

prEN 1254-20:2019, Copper and copper alloys — Plumbing fittings — Part 20: Definitions, thread

dimensions, test methods, reference data and supporting information

EN 1775, Gas supply — Gas pipework for buildings — Maximum operating pressure less than or equal to 5

bar — Functional recommendations

EN 10226-3, Pipes threads where pressure tight joint are made on the threads — Part 3: Verification by

means of limit gauges

EN 12502-2, Protection of metallic materials against corrosion — Guidance on the assessment of

corrosion likelihood in water distribution and storage systems — Part 2: Influencing factors for copper

and copper alloys

EN 12735-1, Copper and copper alloys — Seamless, round tubes for air conditioning and refrigeration -

Part 1: Tubes for piping systems

EN 12735-2, Copper and copper alloys — Seamless, round tubes for air conditioning and refrigeration —

Part 2: Tubes for equipment
EN 12828, Heating systems in buildings — Design for water-based heating systems

EN 12845, Fixed firefighting systems — Automatic sprinkler systems — Design, installation and

maintenance

EN 13348, Copper and copper alloys — Seamless, round copper tubes for medical gases or vacuum

EN 13349, Copper and copper alloys — Pre-insulated copper tubes with solid covering

EN ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method (ISO 6506-1)

EN ISO 6507-1, Metallic materials — Vickers hardness test — Part 1: Test method (ISO 6507-1)

EN ISO 7396, Medical gas pipeline systems
EN ISO 9453, Soft solder alloys — Chemical compositions and forms (ISO 9453)
EN ISO 17672, Brazing — Filler metals (ISO 17672)
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oSIST prEN 1254-1:2019
prEN 1254-1:2019 (E)

ISO 7-2, Pipe threads where pressure-tight joints are made on the threads — Part 2: Verification by means

of limit gauges

ISO 228-2, Pipe threads where pressure-tight joints are not made on the threads — Part 2: Verification by

means of limit gauges

ISO 2859-1:1999, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed

by acceptance quality limit (AQL) for lot-by-lot inspection
ISO 6957:1988, Copper alloys — Ammonia test for stress corrosion resistance
3 Terms and definitions

For the purposes of this document, the terms and definitions given in prEN 1254-20:2019 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 http://www.iso.org/obp
4 Product characteristics
4.1 Internal pressure

When tested according to the method in 5.2 fittings shall show no signs of leakage or permanent

distortion.
4.2 Tightness
4.2.1 Leak tightness under internal hydrostatic pressure

Fittings assessed as indicated in 4.1 are considered to be leak tight under internal hydrostatic pressure.

4.2.2 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 5.3.1 fitting bodies shall show no visual indication of leakage.

4.3 Release of dangerous substances

National regulations on dangerous substances may require verification and declaration on release, and

sometimes content, when construction products covered by this standard are placed on those markets.

In the absence of European harmonized test methods, verification and declaration on release/content

should be done taking into account national provisions in the place of use.
4.4 Durability
4.4.1 Durability of internal pressure
4.4.1.1 Resistance to stress corrosion

Fittings manufactured from copper and copper-tin-zinc alloys (CuSnZnPb) shall be considered to be

resistant to stress corrosion according to EN 12502-2 and copper-zinc-silicon alloys containing ≥ 2 % Si

are also considered to be resistant.
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oSIST prEN 1254-1:2019
prEN 1254-1:2019 (E)

Fittings manufactured from CuZn-alloys shall be considered to be resistant to stress corrosion when the

product has a hardness HBW 2,5/62,5 ≤ 110 measured according to EN ISO 6506-1 or a hardness

HV ≤ 134 measured according to EN ISO 6507-1.

Fittings manufactured from copper alloys with a zinc content of 10 % or greater not mentioned above

shall be tested and assessed according to 5.4.1.1, and shall show no evidence of cracking.

4.4.2 Durability of tightness
4.4.2.1 Residual carbon contamination in the bore
Applies only to copper fittings and does not apply to copper alloy fittings.
4.4.2.1.1 Carbon film
When tested according to 5.4.2.1 there shall not be any visible carbon film.
4.4.2.1.2 Total carbon

When tested according to 5.4.2.2 the maximum total carbon level on internal surfaces shall not exceed

1,0 mg/dm .
4.4.2.2 Resistance to dezincification
Does not apply to fittings for gas applications.

The resistance to dezincification of alloy fittings can be obtained by the correct material selection and

processing of that material.

Alloys containing 10 % or less zinc provide a good resistance to dezincification and don't need to be

tested.

Representative material samples, prior to machining, shall be tested. When tested according to 5.4.2.3,

the mean and maximum depth of dezincification in any direction shall be expressed in µm and shall

meet the acceptance criteria listed below for resistance to dezincification:
— for grade A: maximum 200 µm;
— for grade B: mean not to exceed 200 µm and maximum 400 µm.

If any of the test pieces do not meet the criteria for the chosen grade, a second lot of test samples from

the same batch shall be selected and the test repeated. If any of the second lot of test pieces fails, then

the batch represented shall be deemed not to conform to the requirements of this standard.

If the user needs to heat a dezincification resistant alloy fitting to a temperature exceeding 550 °C for

example for brazing, advice should be sought from the manufacturer.
4.5 Dimensional tolerances of diameters to achieve reliable capillary flow

In order to achieve the capillary flow of a solder or brazing alloy when making a connection, the

dimensions of a socket or male end shall be tightly controlled.

When assessed according to the method specified in 5.5, the diameter shall be within the tolerances

expressed in Table 1 for the relevant diameters.
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oSIST prEN 1254-1:2019
prEN 1254-1:2019 (E)
Table 1 — Tolerances on the nominal diameter
Values in millimetres
Nominal diameter Tolerances on the mean diameter Resulting diametrical
D with respect to the nominal diameter D difference
Outside diameter Inside diameter max. min.
of male end of socket
10
12
+0,04 +0,15
14 0,20 0,02
−0,05 +0,06
14,7
15
16
18
21
22
+0,05 +0,18
25 0,24 0,02
−0,06 +0,07
27,4
28
34
35
40
+0,06 +0,23
40,5 0,30 0,03
−0,07 +0,09
42
53,6
54
64
66,7
70
76,1
+0,07 +0,33
0,41 0,03
−0,08 +0,10
80
88,9
106
108
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oSIST prEN 1254-1:2019
prEN 1254-1:2019 (E)
Nominal diameter Tolerances on the mean diameter Resulting diametrical
D with respect to the nominal diameter D difference
Outside diameter Inside diameter max. min.
of male end of socket

Arithmetical mean of two diameters at right angles in a cross-section taken anywhere on the length of the

socket or of the male end except under indented marking or in the solder or brazing alloy groove.

The soldering or brazing of tubes and fittings for these diameters requires more skilled techniques

(further information is available in prEN 1254-20:2019, Annex A).

4.6 Wall thickness for ends for capillary soldering or capillary brazing to copper tubes

When measured according to the method specified in 5.6, the minimum wall thickness shall be as

expressed in Table 2 for the relevant diameters and different forms of the material.

The minimum wall thickness requirements do not apply under embossed marking on the socket end.

In the case of integral solder or brazing ring fittings where a groove is made within the soldering or

brazing length, the minimum wall thickness measured within or immediately adjacent the solder

groove (see Figure 1) shall be in accordance with dimension e' in Table 2.
end feed fitting integral solder or brazing ring integral solder or brazing
fitting ring fitting
Key
D nominal diameter
e minimum wall thickness

e' minimum wall thickness within or immediately adjacent the solder or brazing ring groove

Figure 1 — Minimum wall thickness
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oSIST prEN 1254-1:2019
prEN 1254-1:2019 (E)
Table 2 — Minimum wall thickness
Dimensions in millimetres
Nominal Minimum wall thickness
diameter
Wrought coppers Wrought copper alloys Cast coppers and copper
and continuous cast bar alloys
D e e' E e' e e'
6 0,6 0,54 1,0 0,55 1,0 0,65
8 0,6 0,54 1,0 0,55 1,0 0,65
10 0,6 0,54 1,0 0,55 1,0 0,65
12 0,6 0,54 1,1 0,60 1,1 0,71
14 0,6 0,54 1,1 0,60 1,1 0,71
14,7 0,7 0,63 1,2 0,66 1,2 0,78
15 0,7 0,63 1,2 0,66 1,2 0,78
16 0,7 0,63 1,2 0,66 1,2 0,78
18 0,8 0,72 1,4 0,77 1,4 0,91
21 0,9 0,81 1,4 0,77 1,4 0,91
22 0,9 0,81 1,4 0,77 1,5 0,97
25 0,9 0,81 1,4 0,77 1,6 1,04
27,4 0,9 0,81 1,5 0,82 1,6 1,04
28 0,9 0,81 1,5 0,82 1,8 1,17
34 1,0 0,90 1,6 0,88 1,8 1,17
35 1,0 0,90 1,6 0,88 1,8 1,17
40 1,1 0,99 1,8 0,99 2,0 1,30
40,5 1,1 0,99 1,8 0,99 2,0 1,30
42 1,1 0,99 1,8 0,99 2,0 1,30
53,6 1,2 1,08 1,9 1,04 2,3 1,49
54 1,2 1,08 1,9 1,04 2,3 1,49
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oSIST prEN 1254-1:2019
prEN 1254-1:2019 (E)
Nominal Minimum wall thickness
diameter
Wrought coppers Wrought copper alloys Cast coppers and copper
and continuous cast bar alloys
D e e' E e' e e'
64 1,4 1,26 2,0 1,10 2,4 1,56
66,7 1,4 1,26 2,0 1,10 2,4 1,56
70 1,4 1,26 2,3 1,26 2,6 1,69
76,1 1,6 1,44 2,6 1,43 2,8 1,82
80 1,8 1,62 2,8 1,54 2,9 1,88
88,9 1,8 1,62 2,9 1,59 3,1 2,01
106 2,1 1,89 3,3 1,80 3,5 2,27
108 2,1 1,89 3,3 1,80 3,5 2,27
4.7 Wall thickness at threaded portions of adaptor fittings
This requirement only applies to adaptor fittings with an interface thread.

When assessed according to the method specified in 5.7 the minimum wall thickness at the interface

thread shall be as expressed in prEN 1254-20:2019,
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