EN ISO 15245-1:2021
(Main)Gas cylinders - Parallel threads for connection of valves to gas cylinders - Part 1: Specification (ISO 15245-1:2021)
Gas cylinders - Parallel threads for connection of valves to gas cylinders - Part 1: Specification (ISO 15245-1:2021)
This document specifies definitions, dimensions and tolerances of parallel screw threads of M30 x 2, M25 x 2 and M18 x 1,5, for the connection of valves to medical and industrial gas cylinders.
This document does not contain the connection requirements for:
— mechanical strength;
— gas tightness;
— capability of repeated assembly and dismounting operations (this aspect is covered in ISO 13341).
Ortsbewegliche Gasflaschen - Zylindrische Gewinde für den Anschluss von Ventilen an Gasflaschen - Teil 1: Spezifikation (ISO 15245-1:2021)
Dieses Dokument legt Begriffe, Maße und Toleranzen für zylindrische Gewinde M30 × 2, M25 × 2 und M18 × 1,5 für den Anschluss von Ventilen an Gasflaschen für den medizinischen und industriellen Gebrauch fest.
Dieses Dokument enthält keine Anforderungen an die Verbindung hinsichtlich
- der mechanischen Festigkeit,
- der Gasdichtheit, und
- der Fähigkeit, eine Reihe von Montagen und Demontagen unbeschadet zu überstehen (dieser Aspekt wird in ISO 13341 behandelt).
Bouteilles à gaz - Filetages parallèles pour le raccordement des robinets sur les bouteilles à gaz - Partie 1: Spécification (ISO 15245-1:2021)
Le présent document spécifie les définitions, les dimensions et les tolérances des filetages parallèles M30 x 2, M25 x 2 et M18 x 1,5, destinés au raccordement des robinets sur des bouteilles à gaz médicales ou industrielles.
Le présent document ne spécifie pas les exigences de raccordement pour les éléments suivants:
— la résistance mécanique;
— l’étanchéité au gaz;
— la capacité à répéter les opérations de montage et de démontage (cet aspect est couvert par l’ISO 13341).
Plinske jeklenke - Cilindrični navoji za priključitev ventilov na plinske jeklenke - 1. del: Specifikacija (ISO 15245-1:2021)
General Information
- Status
- Published
- Publication Date
- 08-Jun-2021
- Withdrawal Date
- 30-Dec-2021
- Technical Committee
- CEN/TC 23 - Transportable gas cylinders
- Drafting Committee
- CEN/TC 23/WG 20 - Cylinder design - Fittings
- Current Stage
- 6060 - Definitive text made available (DAV) - Publishing
- Start Date
- 09-Jun-2021
- Completion Date
- 09-Jun-2021
Relations
- Effective Date
- 16-Jun-2021
- Effective Date
- 16-Jun-2021
Overview
EN ISO 15245-1:2021 (ISO 15245-1:2021) specifies the definitions, dimensions and tolerances for parallel screw threads used to connect valves to medical and industrial gas cylinders. It covers the three standardized thread sizes used for valve-to-cylinder connections: M18 × 1.5, M25 × 2, and M30 × 2. The standard defines the thread form, pitch, sealing features (O-ring recess), thread reliefs and other geometric details needed to ensure compatible valve and cylinder components.
This document does not address:
- Mechanical strength of the connection
- Gas tightness performance
- Capability for repeated assembly/disassembly (this is covered by ISO 13341)
Key topics and technical requirements
- Thread form and rotation: Threads are right‑hand and use the ISO standard 60° profile (ISO 68‑1).
- Pitches: M18 = 1.5 mm; M25 = 2.0 mm; M30 = 2.0 mm (defined with reference to ISO 724).
- Dimensional specifications: Detailed dimensions and tolerances are provided for valve stem threads and cylinder neck threads, including flange diameters, stem lengths, minimum full thread lengths, sealing recess geometry and thread relief lengths.
- O‑ring sealing: Sealing recess diameter and depth, O‑ring internal diameter and cross‑section (thickness) are specified to ensure consistent sealing interfaces between valve flanges and cylinder necks.
- Thread end finish: Chamfering or radiused root options are given (e.g., chamfer 45°/radius values for certain sizes) to avoid sharp first threads.
- Optional vent grooves: Provision for up to two vent grooves on the valve stem is allowed; maximum groove depth is limited (figure note states max 1 mm below root diameter) and edges must be smooth to avoid thread damage.
- Normative references: Includes ISO references such as ISO 724 (pitches), ISO 68‑1 (thread form), ISO 965 (tolerances), ISO 5408 and ISO 10286 for terminology.
Applications and users
This standard is essential to ensure interchangeability, safety and compatibility in the gas-cylinder supply chain. Typical users:
- Cylinder manufacturers and designers
- Valve manufacturers and suppliers
- Medical gas equipment manufacturers and procurement teams
- Industrial gas suppliers, distributors and service technicians
- Testing laboratories and conformity assessors
- Standards and quality engineers responsible for device/component interoperability
Related standards
- ISO 13341 - capability for repeated assembly and dismounting (related testing/requirements)
- ISO 724, ISO 68‑1, ISO 965 series - thread dimensions and tolerances
- ISO 10286, ISO 5408 - terminology and thread vocabulary
Keywords: EN ISO 15245-1:2021, ISO 15245-1, gas cylinders threads, parallel threads, valve-to-cylinder connection, M18×1.5, M25×2, M30×2, O-ring sealing, cylinder manufacturers, valve manufacturers.
Frequently Asked Questions
EN ISO 15245-1:2021 is a standard published by the European Committee for Standardization (CEN). Its full title is "Gas cylinders - Parallel threads for connection of valves to gas cylinders - Part 1: Specification (ISO 15245-1:2021)". This standard covers: This document specifies definitions, dimensions and tolerances of parallel screw threads of M30 x 2, M25 x 2 and M18 x 1,5, for the connection of valves to medical and industrial gas cylinders. This document does not contain the connection requirements for: — mechanical strength; — gas tightness; — capability of repeated assembly and dismounting operations (this aspect is covered in ISO 13341).
This document specifies definitions, dimensions and tolerances of parallel screw threads of M30 x 2, M25 x 2 and M18 x 1,5, for the connection of valves to medical and industrial gas cylinders. This document does not contain the connection requirements for: — mechanical strength; — gas tightness; — capability of repeated assembly and dismounting operations (this aspect is covered in ISO 13341).
EN ISO 15245-1:2021 is classified under the following ICS (International Classification for Standards) categories: 23.020.35 - Gas cylinders. The ICS classification helps identify the subject area and facilitates finding related standards.
EN ISO 15245-1:2021 has the following relationships with other standards: It is inter standard links to EN ISO 15245-1:2001/A1:2013, EN ISO 15245-1:2001. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN ISO 15245-1:2021 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-2021
Nadomešča:
SIST EN ISO 15245-1:2002
SIST EN ISO 15245-1:2002/A1:2013
Plinske jeklenke - Cilindrični navoji za priključitev ventilov na plinske jeklenke - 1.
del: Specifikacija (ISO 15245-1:2021)
Gas cylinders - Parallel threads for connection of valves to gas cylinders - Part 1:
Specification (ISO 15245-1:2021)
Ortsbewegliche Gasflaschen - Zylindrische Gewinde für den Anschluss von Ventilen an
Gasflaschen - Teil 1: Spezifikation (ISO 15245-1:2021)
Bouteilles à gaz - Filetages parallèles pour le raccordement des robinets sur les
bouteilles à gaz - Partie 1: Spécification (ISO 15245-1:2021)
Ta slovenski standard je istoveten z: EN ISO 15245-1:2021
ICS:
21.040.30 Posebni navoji Special screw threads
23.020.35 Plinske jeklenke Gas cylinders
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 15245-1
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2021
EUROPÄISCHE NORM
ICS 23.020.35 Supersedes EN ISO 15245-1:2001, EN ISO 15245-
1:2001/A1:2013
English Version
Gas cylinders - Parallel threads for connection of valves to
gas cylinders - Part 1: Specification (ISO 15245-1:2021)
Bouteilles à gaz - Filetages parallèles pour le Ortsbewegliche Gasflaschen - Zylindrische Gewinde für
raccordement des robinets sur les bouteilles à gaz - den Anschluss von Ventilen an Gasflaschen - Teil 1:
Partie 1: Spécification (ISO 15245-1:2021) Spezifikation (ISO 15245-1:2021)
This European Standard was approved by CEN on 16 May 2021.
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 ISO 15245-1:2021 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 15245-1:2021) has been prepared by Technical Committee ISO/TC 58 "Gas
cylinders" in collaboration with Technical Committee CEN/TC 23 “Transportable gas cylinders” the
secretariat of which is held by BSI.
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 December 2021, and conflicting national standards
shall be withdrawn at the latest by December 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 ISO 15245-1:2001.
According to the CEN-CENELEC Internal Regulations, the national standards organizations 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.
Endorsement notice
The text of ISO 15245-1:2021 has been approved by CEN as EN ISO 15245-1:2021 without any
modification.
INTERNATIONAL ISO
STANDARD 15245-1
Second edition
2021-05
Gas cylinders — Parallel threads
for connection of valves to gas
cylinders —
Part 1:
Specification
Bouteilles à gaz — Filetages parallèles pour le raccordement des
robinets sur les bouteilles à gaz —
Partie 1: Spécification
Reference number
ISO 15245-1:2021(E)
©
ISO 2021
ISO 15245-1:2021(E)
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
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Phone: +41 22 749 01 11
Email: copyright@iso.org
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Published in Switzerland
ii © ISO 2021 – All rights reserved
ISO 15245-1:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 3
4.1 Thread rotation . 3
4.2 Thread profile . 3
4.3 Pitch . 4
4.4 Thread dimensions . 6
4.5 O-rings . 6
5 Thread end finish . 7
6 Marking . 7
Bibliography . 8
ISO 15245-1:2021(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles i
...
EN ISO 15245-1:2021は、ガスシリンダーにおけるバルブとの接続用の平行ねじに関する規格であり、その範囲は医療用および産業用ガスシリンダーにおけるM30 x 2、M25 x 2、M18 x 1.5の平行ねじの定義、寸法、及び公差を具体的に示しています。この標準化文書は、ガスシリンダーのバルブ接続における重要な要素であり、特に医療や工業界での安全性と互換性を確保するための基礎を提供します。 この標準の強みは、その明確な定義と精密な寸法規定にあります。これにより、製造業者は高精度のバルブとシリンダーの接続を実現し、全体のシステムの安全性を向上させることができます。また、規格は国際的に認識されたものであり、異なる地域や国での互換性を持たせるために非常に重要です。 ただし、EN ISO 15245-1:2021は、機械的強度やガスの密閉性、反復的な組立及び分解の能力といった接続要求については触れていない点に注意が必要です。これらの要素に関しては、ISO 13341がカバーしています。この明確な分業により、ユーザーはそれぞれの文書を組み合わせて、安全で効率的なガスシリンダーの利用を確保することができます。 全体として、EN ISO 15245-1:2021は、医療用および産業用ガスシリンダーにおけるバルブ接続に関連する平行ねじの標準化を通じて、業界内での標準的な実践を導く重要な文書です。その内容は、高い適用性と信頼性を持っており、さまざまな分野での広範な利用が期待されます。
Die Norm EN ISO 15245-1:2021 bietet eine klare und umfassende Spezifizierung der parallelen Gewinde für den Anschluss von Ventilen an Gasflaschen, insbesondere in den Ausführungen M30 x 2, M25 x 2 und M18 x 1,5. Dieses Dokument definiert nicht nur die Dimensionen, sondern auch die Toleranzen, was eine präzise und konsistente Anwendung in der Praxis ermöglicht. Ein wesentlicher Vorteil dieser Norm ist ihre Fokussierung auf die Standardisierung der Gewindeverbindungen für medizinische und industrielle Gase, was die Sicherheit und Effizienz bei der Verwendung von Gasflaschen erheblich steigert. Durch die genaue Festlegung der Gewindeparameter wird sichergestellt, dass die kompatiblen Bauteile zuverlässig zusammenarbeiten, was besonders in sicherheitskritischen Anwendungen von Bedeutung ist. Die Relevanz dieser Norm erstreckt sich auf zahlreiche Industrien, in denen Gasflaschen verwendet werden, sei es im Gesundheitswesen oder in der Industrie. Obwohl die Norm nicht die Anforderungen an mechanische Festigkeit oder Gasdichtheit behandelt, stellt sie dennoch einen wichtigen Beitrag zur Harmonisierung von Verbindungselementen dar, der in Kombination mit anderen Normen, wie ISO 13341, eine umfassende Sicherheits- und Funktionsprüfung ermöglicht. Insgesamt bietet die EN ISO 15245-1:2021 eine entscheidende Grundlage für die Standardisierung von Verbindungen zwischen Ventilen und Gasflaschen. Ihre Stärken liegen in der klaren Definition und den präzisen Toleranzen, die eine sichere und effiziente Nutzung in der Praxis fördern.
La norme SIST EN ISO 15245-1:2021 est un document essentiel qui spécifie les dimensions, les tolérances et les définitions des filets de vis parallèles utilisés pour la connexion des vannes aux bouteilles de gaz. Elle met l'accent sur des dimensions spécifiques, notamment M30 x 2, M25 x 2 et M18 x 1,5, qui sont cruciales pour assurer une connexion adéquate entre les vannes et les cylindres de gaz, tant dans les applications médicales qu'industrielles. L'un des points forts de cette norme réside dans sa capacité à uniformiser les spécifications techniques associées aux cylindres de gaz. Ceci est particulièrement pertinent dans des secteurs où la sécurité et la fiabilité sont primordiales. Le cadre de cette norme contribue à minimiser les risques liés à la mauvaise connexion des vannes, garantissant ainsi un fonctionnement optimal des systèmes de gaz. Un autre aspect remarquable de la norme est qu'elle se concentre exclusivement sur les aspects relatifs aux dimensions des filets, en laissant de côté d'autres critères critiques tels que la résistance mécanique ou l’étanchéité des gaz. Bien que ces exigences ne soient pas abordées dans ce document, elles sont traitées dans d'autres normes, telles que l'ISO 13341, ce qui permet aux utilisateurs de se référer à un ensemble cohérent de documents pour une compréhension complète des exigences techniques. En résumé, la norme SIST EN ISO 15245-1:2021 se positionne comme un outil de référence incontournable pour les professionnels travaillant avec des cylindres de gaz, apportant une clarté nécessaire dans les spécifications des filets de vis parallèles. Sa pertinence dans les domaines médical et industriel souligne l'importance de la standardisation pour garantir la sécurité et l'efficacité des systèmes de gestion des gaz.
The standard EN ISO 15245-1:2021 provides essential specifications related to the dimensions and tolerances of parallel screw threads for connecting valves to both medical and industrial gas cylinders. By focusing specifically on M30 x 2, M25 x 2, and M18 x 1.5 thread dimensions, the document ensures a defined framework that enhances compatibility and interoperability among various gas cylinder applications. One of the primary strengths of this standard is its precise delineation of thread specifications, which is crucial for manufacturers and users of gas cylinders. The clear definitions and dimensional tolerances included in this document help facilitate quality control and manufacturing processes, ultimately aiming for safety and efficiency in applications involving gas cylinders. Furthermore, the document's focus on the specifications for parallel threads is particularly relevant in sectors where valve connections must meet strict safety and operational requirements. While the standard does not encompass guidelines for mechanical strength, gas tightness, or the capability of repeated assembly and dismounting, it effectively integrates its niche specifications with other relevant standards such as ISO 13341, promoting a holistic approach to gas cylinder safety. In summary, EN ISO 15245-1:2021 stands out for its targeted relevance to valve connections on gas cylinders, offering a detailed specification that supports safe and efficient operations in medical and industrial environments. The clarity in definitions, dimensions, and tolerances reinforces its role as a critical resource for manufacturers and users in the gas cylinder industry.
SIST EN ISO 15245-1:2021 표준은 가스 실린더와 관련된 파라렐 스레드의 정밀한 규격을 제공하여 의료 및 산업 가스 실린더의 밸브 연결을 위한 기준을 설정합니다. 이 문서에서는 M30 x 2, M25 x 2 및 M18 x 1.5의 파라렐 나사 스레드의 정의, 치수 및 허용오차를 명확하게 규명하고 있습니다. 이 표준의 주요 강점은 여러 가지 크기의 나사 스레드를 정형화하여 사용자와 제조업체 간의 일관성을 보장한다는 점입니다. 이는 가스 실린더와 밸브 간의 연결 안전성을 높이고, 다양한 산업에서의 상호 운용성을 개선하는 데 기여합니다. 또한, 표준은 의료 및 산업 분야에서 필수적으로 요구되는 품질 기준을 충족시킬 수 있도록 설계되었습니다. 또한, SIST EN ISO 15245-1:2021 문서는 연결 요구사항, 즉 기계적 강도, 가스 밀폐성 및 반복적인 조립과 분해 작업의 능력에 대한 내용을 포함하지 않습니다. 이러한 요소들은 ISO 13341에서 다루어지므로, 사용자들은 이 표준과 함께 ISO 13341을 참고하여 더욱 포괄적인 이해를 도모할 수 있습니다. 결론적으로, SIST EN ISO 15245-1:2021 표준은 가스 실린더와 밸브 연결을 위한 필수적인 규정을 제공하며, 관련 업계의 안전성과 신뢰성을 높이는 데 중요한 역할을 합니다.
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