EN 1254-20:2021/prA1
(Amendment)Copper and copper alloys - Plumbing fittings - Part 20: Definitions, thread dimensions, test methods, reference data and supporting information
Copper and copper alloys - Plumbing fittings - Part 20: Definitions, thread dimensions, test methods, reference data and supporting information
This document contains definitions, thread dimension, reference data (minimum bore), supporting information (assembling instructions) and describes the test methods referenced by other parts of the EN 1254 series.
Thread dimensions comprise: wall thickness at threaded portions of fittings, dimensions of tail pipe ends for swivel fittings, dimensions of gas union connectors, thread dimensions and thread profile.
Test methods comprise: leak tightness under internal hydrostatic pressure, leak tightness under internal pneumatic pressure, integrity of fabricated fitting bodies or having an 'as cast' microstructure, resistance to pull out of joints to metallic tubes, resistance of joints with metallic tube to vibration, resistance of joints to static flexural force, leak tightness of joints under vacuum, the resistance of joints to temperature cycling, detecting non-pressed fitting ends, resistance to stress corrosion, detection of a carbon film on the surface of copper fittings, determination of mean depth of dezincification, resistance of joints to pressure cycling, disconnection and re-use, determining if the diameter and/or the length of engagement of a capillary end is/are within the specified tolerance, determining the minimum length of engagement of an integral solder or brazing ring socket having a formed groove.
Kupfer und Kupferlegierungen - Fittings - Teil 20: Definitionen, Gewindemaße, Prüfverfahren, Referenzdaten und ergänzende Informationen
Cuivre et alliages de cuivre - Raccords - Partie 20 : Définitions, dimensions de filetage, méthodes d'essai, données de référence et informations complémentaires
Baker in bakrove zlitine - Fitingi - 20. del: Definicije, mere navojev, preskusne metode, referenčni podatki in dodatne informacije - Dopolnilo A1
General Information
- Status
- Not Published
- Publication Date
- 21-Jul-2026
- Technical Committee
- CEN/TC 133 - Copper and copper alloys
- Drafting Committee
- CEN/TC 133/WG 8 - Fittings
- Current Stage
- 4097 - End of interruption of work - split/merged
- Start Date
- 21-Nov-2024
- Completion Date
- 14-Apr-2025
Relations
- Effective Date
- 27-Nov-2024
- Effective Date
- 17-Apr-2024
Overview
EN 1254-20:2021/prA1 - published by CEN - is the technical specification for copper and copper-alloy plumbing fittings that provides definitions, thread dimensions, reference data and supporting information, and describes the test methods referenced across the EN 1254 series. The A1 amendment updates scope and adds a formal minimum wall thickness table for fitting bodies and clarifies supporting-sleeve definitions and assembling instructions. Keywords: copper fittings, plumbing fittings standard, EN 1254-20, copper alloys, thread dimensions.
Key topics and technical requirements
- Scope and definitions
- Standardizes terminology for plumbing fittings made from copper and copper alloys.
- Amendment A1 expands scope to explicitly include minimum bore and wall thickness and assembling instructions.
- Thread dimensions and profiles
- Specifies: wall thickness at threaded portions, dimensions of tail-pipe ends for swivel fittings, dimensions for gas union connectors, thread dimensions and thread profile.
- Reference data
- Includes reference values such as minimum bore and, via A1, a minimum wall thickness table (Table 14) for wrought, cast and continuously cast copper alloys (with exclusions for threaded portions, tube connecting ends and supporting sleeves).
- Test methods
- Detailed testing required or referenced by other EN 1254 parts, including:
- Leak tightness under internal hydrostatic and pneumatic pressure
- Integrity of fabricated or as-cast fitting bodies
- Pull-out resistance of joints to metallic tubes
- Vibration and static flexural resistance of joints
- Leak tightness under vacuum and resistance to temperature cycling
- Detection of non-pressed fitting ends and carbon film presence
- Resistance to stress corrosion and dezincification depth determination
- Pressure cycling, disconnection and re‑use, verification of capillary engagement tolerances, and minimum engagement for solder/braze ring sockets
- Detailed testing required or referenced by other EN 1254 parts, including:
Applications
- Use EN 1254-20 when designing, manufacturing, testing or specifying copper plumbing fittings for potable water, heating and gas systems where compliance with European fittings standards is required.
- Guides quality control, type testing and conformity assessment for product certification and CE marking (where applicable).
- Provides technical basis for installation instructions and assembly checks used by installers and inspection bodies.
Who should use this standard
- Manufacturers and designers of copper and copper-alloy plumbing fittings
- Test laboratories and quality assurance engineers performing mechanical, leak and corrosion tests
- Specifiers, procurement teams and regulatory authorities writing product or building compliance requirements
- Installers and maintenance teams needing assembling instructions and acceptance criteria
Related standards
- Related parts of the EN 1254 series
- EN ISO 15874, EN ISO 15875, EN ISO 15876, EN ISO 15877, EN ISO 21003 and EN ISO 22391 (systems referenced for which the A1 wall-thickness table is applicable)
For product compliance, refer to the full EN 1254-20:2021/prA1 document and national transpositions for mandatory requirements.
Frequently Asked Questions
EN 1254-20:2021/prA1 is a draft published by the European Committee for Standardization (CEN). Its full title is "Copper and copper alloys - Plumbing fittings - Part 20: Definitions, thread dimensions, test methods, reference data and supporting information". This standard covers: This document contains definitions, thread dimension, reference data (minimum bore), supporting information (assembling instructions) and describes the test methods referenced by other parts of the EN 1254 series. Thread dimensions comprise: wall thickness at threaded portions of fittings, dimensions of tail pipe ends for swivel fittings, dimensions of gas union connectors, thread dimensions and thread profile. Test methods comprise: leak tightness under internal hydrostatic pressure, leak tightness under internal pneumatic pressure, integrity of fabricated fitting bodies or having an 'as cast' microstructure, resistance to pull out of joints to metallic tubes, resistance of joints with metallic tube to vibration, resistance of joints to static flexural force, leak tightness of joints under vacuum, the resistance of joints to temperature cycling, detecting non-pressed fitting ends, resistance to stress corrosion, detection of a carbon film on the surface of copper fittings, determination of mean depth of dezincification, resistance of joints to pressure cycling, disconnection and re-use, determining if the diameter and/or the length of engagement of a capillary end is/are within the specified tolerance, determining the minimum length of engagement of an integral solder or brazing ring socket having a formed groove.
This document contains definitions, thread dimension, reference data (minimum bore), supporting information (assembling instructions) and describes the test methods referenced by other parts of the EN 1254 series. Thread dimensions comprise: wall thickness at threaded portions of fittings, dimensions of tail pipe ends for swivel fittings, dimensions of gas union connectors, thread dimensions and thread profile. Test methods comprise: leak tightness under internal hydrostatic pressure, leak tightness under internal pneumatic pressure, integrity of fabricated fitting bodies or having an 'as cast' microstructure, resistance to pull out of joints to metallic tubes, resistance of joints with metallic tube to vibration, resistance of joints to static flexural force, leak tightness of joints under vacuum, the resistance of joints to temperature cycling, detecting non-pressed fitting ends, resistance to stress corrosion, detection of a carbon film on the surface of copper fittings, determination of mean depth of dezincification, resistance of joints to pressure cycling, disconnection and re-use, determining if the diameter and/or the length of engagement of a capillary end is/are within the specified tolerance, determining the minimum length of engagement of an integral solder or brazing ring socket having a formed groove.
EN 1254-20:2021/prA1 is classified under the following ICS (International Classification for Standards) categories: 23.040.40 - Metal fittings. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 1254-20:2021/prA1 has the following relationships with other standards: It is inter standard links to EN 1254-20:2021+A1:2025, EN 1254-20:2021. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN 1254-20:2021/prA1 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2024
Baker in bakrove zlitine - Fitingi - 20. del: Definicije, mere navojev, preskusne
metode, referenčni podatki in dodatne informacije - Dopolnilo A1
Copper and copper alloys - Plumbing fittings - Part 20: Definitions, thread dimensions,
test methods, reference data and supporting information
Kupfer und Kupferlegierungen - Fittings - Teil 20: Definitionen, Gewindemaße,
Prüfverfahren, Referenzdaten und ergänzende Informationen
Cuivre et alliages de cuivre - Raccords - Partie 20 : Définitions, dimensions de filetage,
méthodes d'essai, données de référence et informations complémentaires
Ta slovenski standard je istoveten z: EN 1254-20:2021/prA1
ICS:
23.040.40 Kovinski fitingi Metal fittings
77.150.30 Bakreni izdelki Copper products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
EN 1254-20:2021
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
July 2024
ICS 23.040.40
English Version
Copper and copper alloys - Plumbing fittings - Part 20:
Definitions, thread dimensions, test methods, reference
data and supporting information
Cuivre et alliages de cuivre - Raccords - Partie 20 : Kupfer und Kupferlegierungen - Fittings - Teil 20:
Définitions, dimensions de filetage, méthodes d'essai, Definitionen, Gewindemaße, Prüfverfahren,
données de référence et informations complémentaires Referenzdaten und ergänzende Informationen
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 133.
This draft amendment A1, if approved, will modify the European Standard EN 1254-20:2021. If this draft becomes an
amendment, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for
inclusion of this amendment into the relevant national standard without any alteration.
This draft amendment 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, 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, Türkiye 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
...
SIST EN 1254-20:2021/prA1 표준 문서는 동 및 동합금 배관 피팅에 대한 포괄적인 정의, 스레드 치수, 시험 방법 및 참조 데이터를 제공하는 데 중점을 두고 있습니다. 이 표준의 범위는 동합금 배관 피팅의 설계와 설치 과정에서 필수적인 요소를 정의하며, 다양한 배관 시스템이 안전하고 효율적으로 작동하도록 도와줍니다. 이 표준의 강점은 다양한 스레드 치수와 시험 방법을 포함하고 있다는 점입니다. 스레드 치수는 피팅의 스레드 부분에서의 벽 두께, 스위블 피팅의 테일 파이프 끝 치수, 가스 유니온 커넥터의 치수 등을 상세히 규명하고 있어, 제조업체가 일관된 품질을 유지할 수 있도록 합니다. 또한, 시험 방법 섹션에서는 내부 수압 및 공압에서의 누수 차단 능력, 금속 튜브와의 결합 상태, 온도 주기 저항, 스트레스 부식 저항 등을 평가하는 방법을 통해 피팅의 신뢰성을 높이는 데 기여합니다. 이 표준은 현재 배관 시스템에서 동합금을 사용하는 데 있어 매우 중요하며, 최신 기술과 안전 규정을 반영하여 이를 실현하고 있습니다. EN 1254 시리즈의 다른 부문과의 연계를 통해 사용자는 보다 일관된 품질 기준에 따라 제품을 설계하고 시공할 수 있습니다. 전반적으로, SIST EN 1254-20:2021/prA1 표준은 동과 동합금 배관 피팅의 설계 및 테스트를 위한 필수적인 지침을 제공하며, 효율적이고 안전한 배관 시스템 구축에 필수적인 역할을 합니다.
The EN 1254-20:2021/prA1 standard provides a comprehensive framework for the plumbing fittings industry, specifically focusing on copper and copper alloy materials. Its scope encompasses vital definitions, thread dimensions, and extensive test methods, making it an essential reference for manufacturers and engineers. One of the key strengths of this standard lies in its detailed specification of thread dimensions, which includes critical metrics such as wall thickness at threaded portions, tail pipe end dimensions for swivel fittings, and the precise profiles of gas union connectors. By outlining these thread dimensions, the standard ensures compatibility and reliability in plumbing applications. The emphasis on test methods within EN 1254-20:2021/prA1 is particularly notable. It covers a broad range of tests to evaluate the integrity and performance of fittings, including leak tightness under various pressures (hydrostatic and pneumatic), resistance to pull-out forces, and performance under vibration and flexural stresses. This rigorous testing methodology is crucial for ensuring that plumbing systems maintain integrity over time, thereby reducing potential failures and enhancing safety. Moreover, the inclusion of supporting information such as assembling instructions enriches the standard's practicality. It allows users to not only understand the specifications but also apply them effectively in real-world scenarios. The standard also addresses critical durability factors such as resistance to stress corrosion and temperature cycling, reinforcing its relevance in today’s market where longevity and resilience are paramount. Overall, EN 1254-20:2021/prA1 stands out as a significant and relevant guideline for those involved in the manufacturing, testing, and installation of copper and copper alloy plumbing fittings, providing a well-rounded and detailed approach to ensuring quality and performance in plumbing applications.
SIST EN 1254-20:2021/oprA1は、銅および銅合金の配管部品に関する重要な標準であり、特に定義、スレッド寸法、試験方法、参考データと補足情報を包括的に提供している。標準の範囲は非常に広く、配管フィッティングに関連するさまざまな要素をカバーしているため、業界内での一貫性と信頼性を確保するのに役立つ。 本標準の強みの一つは、スレッド寸法の詳細な規定である。スレッド部分の壁厚、スイベルフィッティング用のテールパイプの端部寸法、ガスユニオンコネクタの寸法、スレッドプロファイルなどが正確に定義されており、確実な接続が可能になる。また、試験方法に関しても、内部静水圧や内部気圧下での漏れの密閉性、振動に対する接合部の抵抗、温度サイクルへの耐性など、多岐にわたる評価が行われるため、製品の品質管理や信頼性向上に貢献する。 さらに、参考データとして最小ボアや組立手順などが含まれていることも特筆すべき点である。これにより、製品設計者や施工業者が必要とする具体的な情報を迅速に取得できるため、作業の効率化が図られる。配管部品の製造および取り扱いにおいて、非常に有用なリソースとなっている。 総じて、SIST EN 1254-20:2021/oprA1は、銅および銅合金の配管フィッティングにとって、信頼性のある規範を提供する重要な文書であり、その包括的な内容は技術者や業界関係者にとって非常に有益である。
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