SIST EN 1254-3:2021
(Main)Copper and copper alloys - Plumbing fittings - Part 3: Compression fittings for use with plastics and multilayer pipes
Copper and copper alloys - Plumbing fittings - Part 3: Compression fittings for use with plastics and multilayer pipes
This document specifies product characteristics, assessment methods, compliance criteria of test results and a designation system for fittings with compression ends for use with plastic and multilayer pipes which are defined in the applicable pipe standard. For the purposes of joining plastics pipes, the fitting ends have a size range from 10 mm to 160 mm. The fittings are designed for a service lifetime up to fifty years.
The compression fittings are used up to the operating temperatures and maximum operating pressures as indicated in Annex A.
This European Standard applies to copper alloy fittings. A non-exhaustive list of these copper alloys is given in CEN/TS 13388.
Adaptor fittings for use with plastic and multilayer pipes may combine compression ends with fitting ends defined in the other parts of EN 1254.
Compression fittings for use with plastic and multilayer pipes may also have flanged end connections according to EN 1092-3.
Compression fittings for use with plastic and multilayer pipes 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.
b) gas applications (not valid for multilayer pipes):
- 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.
Kupfer und Kupferlegierungen - Fittings - Teil 3: Klemmverbindungen für Kunststoffrohre und Mehrschichtverbundrohre
Dieses Dokument legt Produkteigenschaften, Bewertungsverfahren, Konformitätskriterien der Prüfergebnisse und ein Bezeichnungssystem für Klemmverbindungen für Kunststoff- und Mehrschichtverbundrohre, die in der anwendbaren Rohrnorm definiert sind, fest. Zum Verbinden von Kunststoffrohren haben die Fittingenden einen Größenbereich von 10 mm bis 160 mm. Die Fittings sind für eine Lebensdauer von bis zu fünfzig Jahren ausgelegt.
Die Klemmverbindungen werden bis zu den in Anhang A angegebenen Betriebstemperaturen und maximalen Betriebsdrücken eingesetzt.
Dieses Dokument gilt für Fittings aus Kupferlegierungen. Eine nicht vollständige Liste dieser Kupferlegierungen ist in CEN/TS 13388 enthalten.
Übergangsfittings für Kunststoff- und Mehrschichtverbundrohre dürfen Klemmverbindungen mit in den anderen Teilen der EN 1254 definierten Fittingenden kombinieren.
Klemmverbindungen für Kunststoff- und Mehrschichtverbundrohre dürfen auch Flanschendanschlüsse nach EN 1092-3 aufweisen.
Klemmverbindungen für Kunststoff- und Mehrschichtverbundrohre dürfen auch galvanische oder andere dekorative Oberflächenüberzüge 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.
b) Gasanwendungen (gilt nicht für Mehrschichtverbundrohre):
- Erdgas- und Flüssiggasanlagen mit einem maximalen Betriebsdruck von weniger als oder gleich 5 bar nach EN 1775;
- Druckluftsysteme.
Cuivre et alliages de cuivre - Raccords - Partie 3 : Raccords à compression pour tubes en matières plastiques et multicouches
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 extrémités de raccords à compression pour tubes en plastique et multicouches qui sont définis dans la norme de tuyauteries applicable. Pour l'assemblage de tubes en plastique, les extrémités de raccords ont une gamme de dimensions comprise entre 10 mm et 160 mm. Les raccords sont conçus pour une durée de vie en service supérieure à 50 ans.
Les raccords à compression sont utilisés jusqu'aux températures de service et aux pressions de service maximales 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 adaptateurs utilisés avec des tubes en plastique et multicouches peuvent combiner des extrémités à compression avec des extrémités de raccord définies dans les autres parties de l’EN 1254.
Les raccords à compression pour tubes en plastique et multicouches peuvent également comporter des raccordements à brides conformément à l’EN 1092-3.
Les raccords à compression pour tubes en plastique et multicouches 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.
b) les applications de gaz (ne s'applique pas aux tubes multicouches) :
- 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.
Baker in bakrove zlitine - Fitingi - 3. del: Fitingi z nakrčenima priključkoma za spajanje s plastičnimi in večplastnimi cevmi
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 1254-3:2021
01-julij-2021
Nadomešča:
SIST EN 1254-3:2000
Baker in bakrove zlitine - Fitingi - 3. del: Fitingi z nakrčenima priključkoma za
spajanje s plastičnimi in večplastnimi cevmi
Copper and copper alloys - Plumbing fittings - Part 3: Compression fittings for use with
plastics and multilayer pipes
Kupfer und Kupferlegierungen - Fittings - Teil 3: Klemmverbindungen für Kunststoffrohre
und Mehrschichtverbundrohre
Cuivre et alliages de cuivre - Raccords - Partie 3 : Raccords à compression pour tubes
en matières plastiques et multicouches
Ta slovenski standard je istoveten z: EN 1254-3:2021
ICS:
23.040.40 Kovinski fitingi Metal fittings
77.150.30 Bakreni izdelki Copper products
SIST EN 1254-3:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 1254-3:2021
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SIST EN 1254-3:2021
EN 1254-3
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2021
EUROPÄISCHE NORM
ICS 23.040.40 Supersedes EN 1254-3:1998
English Version
Copper and copper alloys - Plumbing fittings - Part 3:
Compression fittings for use with plastics and multilayer
pipes
Cuivre et alliages de cuivre - Raccords - Partie 3 : Kupfer und Kupferlegierungen - Fittings - Teil 3:
Raccords à compression pour tubes en matières Klemmverbindungen für Kunststoffrohre und
plastiques et multicouches Mehrschichtverbundrohre
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 1254-3:2021 E
worldwide for CEN national Members.
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SIST EN 1254-3:2021
EN 1254-3:2021 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 7
3 Terms and definitions . 9
4 Product characteristics . 9
4.1 Internal pressure . 9
4.2 Tightness . 9
4.3 Resistance to high temperature for fittings with elastomeric seals (for heating
networks) . 10
4.4 Release of dangerous substances . 10
4.5 Durability . 11
4.6 Wall thickness at the threaded portions of fittings and/or compression nut . 11
4.7 Dimensions of tail pipe ends for swivel fittings . 11
4.8 Dimensions of gas union connectors . 12
4.9 Threaded end dimensions . 12
4.10 Other adapter ends (not defined in EN 1254-20:2021) . 12
4.11 Bore dimensions . 12
4.12 Identity of elastomeric sealing material for liquid applications . 12
4.13 Identity of elastomeric sealing material for gas applications . 12
4.14 Pipe abutment . 13
4.15 Alignment of the fitting ends . 13
4.16 Shapes for tightening systems . 13
4.17 Surface condition . 13
4.18 Plated or coated surfaces . 13
5 Testing, assessment and sampling methods . 13
5.1 General . 13
5.2 Internal pressure . 14
5.3 Tightness . 15
5.4 Durability . 19
5.5 Wall thickness at threaded portions of adaptor fittings . 19
5.6 Dimensions of tail pipe ends for swivel fittings . 20
5.7 Dimensions of gas union connectors . 20
5.8 Threaded end dimensions . 20
5.9 Bore dimensions . 20
5.10 Identity of elastomeric sealing material for liquid applications . 20
5.11 Identity of elastomeric sealing material for gas applications . 20
5.12 Alignment of the fitting ends . 20
6 Evaluation of conformity . 21
6.1 General . 21
6.2 Type testing . 21
6.3 Factory production control (FPC) . 27
7 Designation. 31
8 Marking, labelling and packaging . 31
8.1 General . 31
8.2 Additional marking . 31
8.3 Dezincification resistant copper zinc alloys . 32
2
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SIST EN 1254-3:2021
EN 1254-3:2021 (E)
Annex A (normative) Operating temperatures and design pressures . 33
Bibliography . 35
3
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SIST EN 1254-3:2021
EN 1254-3:2021 (E)
European foreword
This document (EN 1254-3:2021) 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 Novemeber 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 1254-3:1998.
The main changes compared to EN 1254-3:1998 are:
— improved alignment with plastics and multilayer pipe standards for hot and cold water
applications;
— separation of test methods into part 20.
This part of the standard (EN 1254-3) 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 1254-3:2021
EN 1254-3:2021 (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.
5
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SIST EN 1254-3:2021
EN 1254-3:2021 (E)
1 Scope
This document specifies product characteristics, assessment methods, compliance criteria of test results
and a designation system for fittings with compression ends for use with plastics and multilayer pipes
which are defined in the applicable pipe standard. For the purposes of joining plastics pipes, the fitting
ends have a nominal diameter from 6 mm to 160 mm. The fittings are designed for a service lifetime up
to fifty years.
The compression 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.
Adaptor fittings for use with plastics and multilayer pipes may combine compression ends with fitting
ends defined in the other parts of EN 1254.
Compression fittings for use with plastics and multilayer pipes may also have flanged end connections
according to EN 1092-3.
Compression fittings for use with plastics and multilayer pipes 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.
b) gas applications (not valid for multilayer pipes):
— 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.
6
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SIST EN 1254-3:2021
EN 1254-3:2021 (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 549:2019, Rubber materials for seals and diaphragms for gas appliances and gas equipment
EN 681-1:1996, Elastomeric seals — Materials requirements for pipe joint seals used in water and
drainage applications - Part 1: Vulcanized rubber
EN 682, Elastomeric Seals — Materials requirements for seals used in pipes and fittings carrying gas and
hydrocarbon fluids
EN 1254-20:2021, Copper and copper alloys — Plumbing fittings — Part 20: Definitions, thread
dimensions, test methods, reference data and supporting information
EN 1555-2, Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) — Part 2: Pipes
EN 10226-3, Pipes threads where pressure tight joint are made on the threads — Part 3: Verification by
means of limit gauges
EN 12201-2, Plastics piping systems for water supply, and for drainage and sewerage under pressure -
Polyethylene (PE) — Part 2: Pipes
EN 12201-5, Plastics piping systems for water supply, and for drainage and sewerage under pressure -
Polyethylene (PE) — Part 5: Fitness for purpose of the system
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 3501, Plastics piping systems — Mechanical joints between fittings and pressure pipes — Test
method for resistance to pull-out under constant longitudinal force (ISO 3501)
EN ISO 3503, Plastics piping systems — Mechanical joints between fittings and pressure pipes - Test
method for leaktightness under internal pressure of assemblies subjected to bending (ISO 3503)
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 1167 (all parts), Thermoplastics pipes, fittings and assemblies for the conveyance of fluids —
Determination of the resistance to internal pressure (ISO 1167)
EN ISO 13056, Plastics piping systems — Pressure systems for hot and cold water — Test method for
leaktightness under vacuum (ISO 13056)
EN ISO 15874-2, Plastics piping systems for hot and cold water installations — Polypropylene (PP) — Part
2: Pipes (ISO 15874-2)
EN ISO 15874-5, Plastics piping systems for hot and cold water installations — Polypropylene (PP) — Part
5: Fitness for purpose of the system (ISO 15874-5)
7
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SIST EN 1254-3:2021
EN 1254-3:2021 (E)
EN ISO 15875-2, Plastics piping systems for hot and cold water installations — Crosslinked polyethylene
(PE-X) - Part 2: Pipes (ISO 15875-2)
EN ISO 15875-5, Plastics piping systems for hot and cold water installations — Crosslinked polyethylene
(PE-X) - Part 5: Fitness for purpose of the system (ISO 15875-5)
EN ISO 15876-2, Plastics piping systems for hot and cold water installations — Polybutene (PB) — Part 2:
Pipes (ISO 15876-2)
EN ISO 15876-5, Plastics piping systems for hot and cold water installations — Polybutene (PB) — Part 5:
Fitness for purpose of the system (ISO 15876-5)
EN ISO 15877-2, Plastics piping systems for hot and cold water installations — Chlorinated poly(vinyl
chloride) (PVC-C) — Part 2: Pipes (ISO 15877-2)
EN ISO 15877-5, Plastics piping systems for hot and cold water installations — Chlorinated poly(vinyl
chloride) (PVC-C) — Part 5: Fitness for purpose of the system (ISO 15877-5)
EN ISO 19892, Plastics piping systems — Thermoplastics pipes and fittings for hot and cold water — Test
method for the resistance of joints to pressure cycling (ISO 19892)
EN ISO 19893, Plastics piping systems — Thermoplastics pipes and fittings for hot and cold water — Test
method for the resistance of mounted assemblies to temperature cycling (ISO 19893)
EN ISO 21003-2, Multilayer piping systems for hot and cold water installations inside buildings — Part 2:
Pipes (ISO 21003-2)
EN ISO 21003-5, Multilayer piping systems for hot and cold water installations inside buildings — Part 5:
Fitness for purpose of the system (ISO 21003-5)
EN ISO 22391-2, Plastics piping systems for hot and cold water installations — Polyethylene of raised
temperature resistance (PE-RT) — Part 2: Pipes (ISO 22391-2)
EN ISO 22391-5, Plastics piping systems for hot and cold water installations — Polyethylene of raised
temperature resistance (PE-RT) — Part 5: Fitness for purpose of the system (ISO 22391-5)
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 9080, Plastics piping and ducting systems — Determination of the long-term hydrostatic strength of
thermoplastics materials in pipe form by extrapolation
ISO 9924-1, Rubber and rubber products — Determination of the composition of vulcanizates and uncured
compounds by thermogravimetry — Part 1: Butadiene, ethylene-propylene copolymer and terpolymer,
isobutene-isoprene, isoprene and styrene-butadiene rubbers
8
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SIST EN 1254-3:2021
EN 1254-3:2021 (E)
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
4.1.1 For liquid applications
When tested according to the method in 5.2.1 fittings shall show no signs of leakage or permanent
distortion.
4.1.2 For fuel gas applications
When tested according to the method in 5.2.2 fittings shall show no signs of leakage or permanent
distortion.
4.1.3 For compressed air applications
When tested according to the method in 5.2.3 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 5.3.1.1 fitting bodies shall show no visual indication of leakage.
4.2.2 Requirements for liquid applications
4.2.2.1 Leak tightness under internal hydrostatic pressure
Fittings assessed as indicated in 4.1.1 are considered to be leak tight under internal hydrostatic
pressure.
4.2.2.2 Leak tightness under vacuum
When tested according to the method in 5.3.2.1 the change in pressure shall not be greater than
0,05 bar at the conclusion of the test.
4.2.2.3 Leak tightness under temperature cycling (for heating networks)
When tested according to the method in 5.3.2.2 fittings shall show no signs of leakage or permanent
distortion.
4.2.2.4 Resistance to pull-out
When tested according to the method in 5.3.1.2 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 5.2.1 fittings shall show no signs of leakage or permanent distortion.
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SIST EN 1254-3:2021
EN 1254-3:2021 (E)
4.2.2.5 Leak tightness under internal hydrostatic pressure while subject to bending
When tested according to the method in 5.3.2.3 fittings shall show no signs of leakage or permanent
distortion.
4.2.3 Requirements for gas applications
4.2.3.1 Leak tightness under internal pneumatic pressure
Fittings assessed as indicated in 4.1.2 and 4.1.3 are considered to be leak tight under internal pneumatic
pressure.
4.2.3.2 Resistance to pull-out
When tested according to the method in 5.3.1.2 the joint assemblies shall withstand the pull-out force
without being separated and when subsequently tested according to the internal pneumatic pressure
test described in 5.2.2 and/or 5.2.3 according to the application, fittings shall show no signs of leakage
or permanent distortion.
4.2.3.3 Leak tightness under temperature cycling for fuel gas applications
When tested according to the test method in 5.3.3.1 fittings shall show no signs of leakage.
4.2.3.4 Leak tightness under internal hydrostatic pressure while subject to bending
When tested according to the method in 5.3.3.2 fittings shall show no signs of leakage or permanent
distortion.
4.2.3.5 Compression fitting with elastomeric seals for fuel gas application inside buildings
The main aspect for the durability of tightness for fuel gas application inside buildings is the ozone
behaviour of the elastomer. Therefore the elastomer shall be ozone resistant and comply with the
requirements of EN 549 class B2 or higher.
4.2.3.6 Compression fitting with elastomeric seals for fuel gas application outside buildings
The main aspect for the durability of tightness for fuel gas application outside buildings depends on the
elastomeric sealing element. Therefore, the elastomer shall comply with the requirements of EN 682
types GAL or GBL.
4.3 Resistance to high temperature for fittings with elastomeric seals (for heating
networks)
The main aspect for the resistance to high temperature liquid applications depends on the elastomeric
sealing element. Therefore, the elastomer shall have the appropriate characteristics as specified in
EN 681-1. The elastomeric sealing elements shall conform to the requirements of EN 681-1:1996,
Table 3 for continuous hot water supply up to 110 °C except for Isoprene-Isobutylene Copolymer (IIR)
where a volume change in water up to and including 15 % is permitted.
4.4 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
available at the Construction website on EUROPA accessed through: https://ec.europa.eu/growth/tools-
databases/cp-ds
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SIST EN 1254-3:2021
EN 1254-3:2021 (E)
4.5 Durability
4.5.1 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
10
HV ≤ 134 measured according to EN ISO 6507-1.
5
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.
4.5.2 Durability of tightness
4.5.2.1 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 5.4.2.1,
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.
4.5.2.2 Resistance to pressure cycling for liquid applications
When tested according to the method in 5.4.2.2 fittings shall show no signs of leakage.
4.6 Wall thickness at the threaded portions of fittings and/or compression nut
This requirement only applies to fittings with an interface thread and/or jointing thread.
When assessed according to the method specified in 5.5 the minimum wall thickness at the interface
thread or jointing thread shall be as expressed in EN 1254-20:2021, 4.1 for the relevant diameters.
4.7 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 5.6 the dimensions shall be as expressed in
EN 1254-20:2021, 4.2 for the thread size.
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SIST EN 1254-3:2021
EN 1254-3:2021 (E)
4.8 Dimensions of gas union connectors
This requirement only applies to fittings with gas union connectors.
When assessed according to the method specified in 5.7 the dimensions shall be as expressed in
EN 1254-20:2021, 4.3 for corresponding nominal size.
4.9 Threaded end dimensions
This requirement only applies to fitting bodies with threaded ends.
When assessed according to the method specified in 5.8 the thread shall be in accordance with
EN 1254-20:2021, 4.4.
4.10 Other adapter ends (not defined in EN 1254-20:2021)
Other adaptor ends, when assembled in accordance with the manufacturer's instructions and pressure
tested according to the method in 5.2 for the intended application, shall show no signs of leakage or
permanent distortion. When re-tested in accordance with the test method in 5
...
SLOVENSKI STANDARD
oSIST prEN 1254-3:2019
01-september-2019
Baker in bakrove zlitine - Fitingi - 3. del: Fitingi z nakrčenima priključkoma za
spajanje s plastičnimi in večplastnimi cevmi
Copper and copper alloys - Plumbing fittings - Part 3: Compression fittings for use with
plastics and multilayer pipes
Kupfer und Kupferlegierungen - Fittings - Teil 3: Klemmverbindungen für Kunststoffrohre
und Mehrschichtverbundrohre
Cuivre et alliages de cuivre - Raccords - Partie 3 : Raccords à compression pour tubes
en plastique et multicouche
Ta slovenski standard je istoveten z: prEN 1254-3
ICS:
23.040.40 Kovinski fitingi Metal fittings
77.150.30 Bakreni izdelki Copper products
oSIST prEN 1254-3:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 1254-3:2019
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oSIST prEN 1254-3:2019
DRAFT
EUROPEAN STANDARD
prEN 1254-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2019
ICS 23.040.40 Will supersede EN 1254-3:1998
English Version
Copper and copper alloys - Plumbing fittings - Part 3:
Compression fittings for use with plastics and multilayer
pipes
Cuivre et alliages de cuivre - Raccords - Partie 3 : Kupfer und Kupferlegierungen - Fittings - Teil 3:
Raccords à compression pour tubes en plastique et Klemmverbindungen für Kunststoffrohre und
multicouche Mehrschichtverbundrohre
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 1254-3:2019 E
worldwide for CEN national Members.
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oSIST prEN 1254-3:2019
prEN 1254-3:2019 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 8
4 Product characteristics . 9
4.1 Internal pressure . 9
4.1.1 For liquid applications . 9
4.1.2 For gas applications . 9
4.2 Tightness . 9
4.2.1 General requirements . 9
4.2.2 Requirements for liquid applications . 9
4.2.3 Requirements for gas applications . 9
4.3 Resistance to high temperature (for heating networks) . 10
4.4 Release of dangerous substances . 10
4.5 Durability . 10
4.5.1 Durability of internal pressure . 10
4.5.2 Durability of tightness . 11
4.5.3 Durability of resistance to high temperature (for heating networks). 11
4.6 Wall thickness at threaded portions of adaptor fittings . 11
4.7 Dimensions of tail pipe ends for swivel fittings . 11
4.8 Dimensions of gas union connectors . 11
4.9 Threaded end dimensions . 11
4.10 Other adapter ends (not defined in prEN 1254-20:2019) . 12
4.11 Bore dimensions . 12
4.12 Identity of elastomeric sealing material for liquid applications . 14
4.13 Identity of elastomeric sealing material for gas applications . 14
4.14 Pipe abutment . 14
4.15 Alignment of the fitting ends . 14
4.16 Shapes for tightening systems . 14
4.17 Surface condition . 14
4.18 Plated or coated surfaces . 14
5 Testing, assessment and sampling methods . 15
5.1 General . 15
5.1.1 Preparation of fittings for testing. 15
5.1.2 Test temperature . 15
5.2 Internal pressure . 15
5.2.1 Internal hydrostatic pressure test . 15
5.2.2 Internal pneumatic pressure test. 15
5.3 Tightness . 16
5.3.1 General tests . 16
5.3.2 Tests for liquid applications . 16
5.3.3 Tests for gas applications . 18
5.4 Durability . 19
5.4.1 Durability of internal pressure . 19
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prEN 1254-3:2019 (E)
5.4.2 Durability of tightness . 19
5.4.3 Durability of resistance to high temperature (for heating networks) . 19
5.5 Wall thickness at threaded portions of adaptor fittings . 20
5.5.1 Type testing . 20
5.5.2 FPC testing . 20
5.6 Dimensions of tail pipe ends for swivel fittings . 20
5.7 Dimensions of gas union connectors . 20
5.7.1 Type testing . 20
5.7.2 FPC testing . 20
5.8 Threaded end dimensions . 20
5.9 Bore dimensions . 20
5.10 Identity of elastomeric sealing material for liquid applications . 20
5.11 Identity of elastomeric sealing material for gas applications . 20
5.12 Alignment of the fitting ends . 21
6 Assessment and verification of constancy of performance - AVCP . 21
6.1 General . 21
6.2 Type testing . 21
6.2.1 General . 21
6.2.2 Test samples, testing and compliance criteria . 22
6.2.3 Test reports . 26
6.3 Factory production control (FPC) . 26
6.3.1 General . 26
6.3.2 Requirements . 26
6.3.3 Product specific requirements . 30
6.3.4 Procedure for modifications . 31
6.3.5 One-off products, pre-production products (e.g. prototypes) and products produced
in very low quantity . 31
7 Classification and designation . 32
8 Marking, labelling and packaging . 32
8.1 General . 32
8.2 Additional marking . 32
8.3 Dezincification resistant copper zinc alloys . 33
Annex A (normative) Operating temperatures and design pressures for fittings with
compression ends . 34
Bibliography . 36
3
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oSIST prEN 1254-3:2019
prEN 1254-3:2019 (E)
European foreword
This document (prEN 1254-3:2019) 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 1254-3:1998.
This part of the standard (EN 1254-3) 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 EN1254-3:1998 are:
— improved alignment with plastic and multilayer pipe standards for hot and cold water
applicartions;
— separation of test methods into part 20.
4
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prEN 1254-3:2019 (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.
5
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prEN 1254-3:2019 (E)
1 Scope
This document specifies product characteristics, assessment methods, compliance criteria of test results
and a designation system for fittings with compression ends for use with plastic and multilayer pipes
which are defined in the applicable pipe standard. For the purposes of joining plastics pipes, the fitting
ends have a size range from 10 mm to 160 mm. The fittings are designed for a service lifetime up to fifty
years.
The compression fittings are used up to the operating temperatures and 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.
Adaptor fittings for use with plastic and multilayer pipes may combine compression ends with fitting
ends defined in the other parts of EN 1254.
Compression fittings for use with plastic and multilayer pipes may also have flanged end connections
according to EN 1092-3.
Compression fittings for use with plastic and multilayer pipes 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.
b) gas applications (not valid for multilayer pipes):
— 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.
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 549:1994, Rubber materials for seals and diaphragms for gas appliances and gas equipment
EN 681-1:1996, Elastomeric seals — Materials requirements for pipe joint seals used in water and
drainage applications - Part 1: Vulcanized rubber
EN 682, Elastomeric Seals — Materials requirements for seals used in pipes and fittings carrying gas and
hydrocarbon fluids
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EN 806 (series), Specifications for installations inside buildings conveying water for human consumption
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 12828, Heating systems in buildings — Design for water-based heating systems
EN 12845, Fixed firefighting systems — Automatic sprinkler systems — Design, installation and
maintenance
EN ISO 3501, Plastics piping systems — Mechanical joints between fittings and pressure pipes — Test
method for resistance to pull-out under constant longitudinal force (ISO 3501)
EN ISO 3503, Plastics piping systems — Mechanical joints between fittings and pressure pipes - Test
method for leaktightness under internal pressure of assemblies subjected to bending (ISO 3503)
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 13056, Plastics piping systems — Pressure systems for hot and cold water — Test method for
leaktightness under vacuum (ISO 13056)
EN ISO 15874-2, Plastics piping systems for hot and cold water installations — Polypropylene (PP) — Part
2: Pipes (ISO 15874-2)
EN ISO 15874-5, Plastics piping systems for hot and cold water installations — Polypropylene (PP) — Part
5: Fitness for purpose of the system (ISO 15874-5)
EN ISO 15875-2, Plastics piping systems for hot and cold water installations — Crosslinked polyethylene
(PE-X) - Part 2: Pipes (ISO 15875-2)
EN ISO 15875-5, Plastics piping systems for hot and cold water installations — Crosslinked polyethylene
(PE-X) - Part 5: Fitness for purpose of the system (ISO 15875-5)
EN ISO 15876-2, Plastics piping systems for hot and cold water installations — Polybutene (PB) — Part 2:
Pipes (ISO 15876-2)
EN ISO 15876-5, Plastics piping systems for hot and cold water installations — Polybutene (PB) — Part 5:
Fitness for purpose of the system (ISO 15876-5)
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EN ISO 15877-2, Plastics piping systems for hot and cold water installations — Chlorinated poly(vinyl
chloride) (PVC-C) — Part 2: Pipes (ISO 15877-2)
EN ISO 15877-5, Plastics piping systems for hot and cold water installations — Chlorinated poly(vinyl
chloride) (PVC-C) — Part 5: Fitness for purpose of the system (ISO 15877-5)
EN ISO 19892, Plastics piping systems — Thermoplastics pipes and fittings for hot and cold water — Test
method for the resistance of joints to pressure cycling (ISO 19892)
EN ISO 19893, Plastics piping systems — Thermoplastics pipes and fittings for hot and cold water — Test
method for the resistance of mounted assemblies to temperature cycling (ISO 19893)
EN ISO 21003-2, Multilayer piping systems for hot and cold water installations inside buildings — Part 2:
Pipes (ISO 21003-2)
EN ISO 21003-5, Multilayer piping systems for hot and cold water installations inside buildings — Part 5:
Fitness for purpose of the system (ISO 21003-5)
EN ISO 22391-2, Plastics piping systems for hot and cold water installations — Polyethylene of raised
temperature resistance (PE-RT) — Part 2: Pipes (ISO 22391-2)
EN ISO 22391-5, Plastics piping systems for hot and cold water installations — Polyethylene of raised
temperature resistance (PE-RT) — Part 5: Fitness for purpose of the system (ISO 22391-5)
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
ISO 9080, Plastics piping and ducting systems — Determination of the long-term hydrostatic strength of
thermoplastics materials in pipe form by extrapolation
ISO 9924-1, Rubber and rubber products — Determination of the composition of vulcanizates and uncured
compounds by thermogravimetry — Part 1: Butadiene, ethylene-propylene copolymer and terpolymer,
isobutene-isoprene, isoprene and styrene-butadiene rubbers
ISO 10508, Plastics piping systems for hot and cold water installations — Guidance for classification and
design
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
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4 Product characteristics
4.1 Internal pressure
4.1.1 For liquid applications
When tested according to the method in 5.2.1 fittings shall show no signs of leakage or permanent
distortion.
4.1.2 For gas applications
When tested according to the method in 5.2.2 fittings shall show no signs of leakage or permanent
distortion.
4.2 Tightness
4.2.1 General requirements
4.2.1.1 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 5.3.1.1 fitting bodies shall show no visual indication of leakage.
4.2.2 Requirements for liquid applications
4.2.2.1 Leak tightness under internal hydrostatic pressure
Fittings assessed as indicated in 4.1.1 are considered to be leak tight under internal hydrostatic
pressure.
4.2.2.2 Leak tightness under vacuum
When tested according to the method in 5.3.2.1 the change in pressure shall not be greater than
0,05 bar at the conclusion of the test.
4.2.2.3 Leak tightness under temperature cycling
When tested according to the method in 5.3.2.2 fittings shall show no signs of leakage or permanent
distortion.
4.2.2.4 Resistance to pull-out
When tested according to the method in 5.3.1.2 the joint assemblies shall withstand the pull-out force
without being separated and shall show no signs of leakage when subjected to the subsequent leak
tightness under internal hydrostatic pressure test as described in 5.2.1.
4.2.2.5 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 5.3.2.3 fittings shall show no signs of leakage or permanent
distortion.
4.2.3 Requirements for gas applications
4.2.3.1 Leak tightness under internal pneumatic pressure
Fittings assessed as indicated in 4.1.2 are considered to be leak tight under internal pneumatic
pressure.
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4.2.3.2 Resistance to pull-out
When tested according to the method in 5.3.1.2 the joint assemblies shall withstand the pull-out force
without being separated and shall show no signs of leakage when subjected to the subsequent leak
tightness under internal hydrostatic pressure test as described in 5.2.2
4.2.3.3 Leak tightness under temperature cycling
When tested according to the test method in 5.3.3.1 fittings shall show no signs of leakage.
4.2.3.4 Leak tightness under internal hydrostatic pressure while subject to bending
When tested according to the method in 5.3.3.1 fittings shall show no signs of leakage or permanent
distortion.
4.2.3.5 Compression fitting suited for fuel gas application inside buildings
The main aspect for the durability of tightness for fuel gas application inside buildings is the ozone
behaviour of the elastomer. Therefore the elastomer shall be ozone resistant and comply with the
requirements of EN 549 class B2 or higher.
4.2.3.6 Compression fitting suited for fuel gas application outside buildings
The main aspect for the durability of tightness for fuel gas application outside buildings depends on the
elastomeric sealing element. Therefore the elastomer shall comply with the requirements of EN 682
types GAL or GBL.
4.3 Resistance to high temperature (for heating networks)
The main aspect for the resistance to high temperature depends on the elastomeric sealing element.
Therefore the elastomer shall have the appropriate characteristics as specified in EN 681-1. The
elastomeric sealing elements shall conform to the requirements of EN 681-1:1996, Table 3 for
continuous hot water supply up to 110 °C except for Isoprene-Isobutylene Copolymer (IIR) where a
volume change in water up to and including 15 % is permitted.
4.4 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.
...
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