SIST EN ISO 11363-1:2018
(Main)Gas cylinders - 17E and 25E taper threads for connection of valves to gas cylinders - Part 1: Specifications (ISO 11363-1:2018)
Gas cylinders - 17E and 25E taper threads for connection of valves to gas cylinders - Part 1: Specifications (ISO 11363-1:2018)
ISO 11363-1:2018 specifies dimensions and tolerances for taper screw threads of nominal diameter 17,4 mm (designated as 17E) and 25,8 mm (designated as 25E) used for the connection of valves to gas cylinders.
ISO 11363-1:2018 does not cover the connection requirements for
- mechanical strength,
- gas tightness, and
- capability of repeated assembly and dismounting operations.
Gauge inspection is covered by ISO 11363‑2.
Gasflaschen - 17E und 25E kegeliges Gewinde zur Verbindung von Ventilen mit Gasflaschen - Teil 1: Spezifikationen (ISO 11363-1:2018)
Dieses Dokument legt Maße und Grenzabmaße für kegelige Schraubengewinde mit einem Nenndurchmesser von 17,4 mm (als 17E bezeichnet) und 25,8 mm (als 25E bezeichnet) für die Verbindung von Ventilen mit Gasflaschen fest.
Er enthält keine Anforderungen an die Verbindung hinsichtlich
- der mechanischen Festigkeit,
- der Gasdichtheit sowie
- der Fähigkeit, wiederholtes Zusammenfügen und Lösen zu überstehen.
Die Lehrenprüfung ist in ISO 11363 2 beschrieben.
Bouteilles à gaz - Filetages coniques 17E et 25E pour le raccordement des robinets sur les bouteilles à gaz - Partie 1 : Spécifications (ISO 11363-1:2018)
ISO 11363-1:2018 spécifie les dimensions et tolérances des filetages coniques à vis, de diamètre nominal 17,4 mm (désigné 17E) et 25,8 mm (désigné 25E), utilisés pour raccorder les robinets sur les bouteilles à gaz.
ISO 11363-1:2018 ne comporte pas les exigences de raccordement suivantes:
- résistance mécanique;
- étanchéité au gaz; et
- capacité à répéter les opérations de montage et de démontage.
La vérification par calibres est traitée dans l'ISO 11363‑2.
Plinske jeklenke - Konična navoja 17E in 25E za priključitev ventila na plinsko jeklenko - 1. del: Specifikacije (ISO 11363-1:2018)
Ta dokument določa mere in tolerance za koničaste navoje vijakov z nazivnim premerom
17,4 mm (označeno kot 17E) in 25,8 mm (označeno kot 25E), ki se uporabljajo za priključitev ventilov na plinske jeklenke.
Ne zajema zahtev za priključitev v zvezi z naslednjim:
– mehansko trdnostjo,
– neprepustnostjo za pline in
– zmožnostjo večkratnega sestavljanja in razstavljanja.
Preverjanje meritev je obravnavano v standardu ISO 11363-2.
General Information
Relations
Overview
EN ISO 11363-1:2018 (ISO 11363‑1:2018) specifies the geometric dimensions and tolerances for two taper screw threads used to connect valves to gas cylinders: nominal diameters 17,4 mm (17E) and 25,8 mm (25E). Published by CEN as an adoption of the ISO text, this standard defines thread geometry, reference planes and nomenclature for valve stems and cylinder neck threads - but does not address mechanical strength, gas tightness, or repeated assembly performance.
Key topics and technical requirements
- Thread sizes: Nominal diameters 17E (17.4 mm) and 25E (25.8 mm) for valve-to-cylinder connections.
- Taper: Specified nominal taper values:
- Taper ratio: 3/25
- Taper angle: 6° 52′
- Taper slope: 12%
- Thread form: British Standard Whitworth (BSW) profile with a 55° thread angle. Threads must be cut with profile measurements perpendicular to the cone surface (not perpendicular to the axis).
- Pitch: Nominal pitch P = 1.814 mm.
- Thread rotation: Right‑hand thread (advances away from observer when rotated clockwise).
- Dimensional system: Definitions for major, minor and pitch diameters; reference planes (A, B, F, G); reference lengths and full‑form thread lengths.
- Scope limits: The standard explicitly excludes requirements for mechanical strength, gas tightness and repeat assembly capability. Gauge inspection and acceptance criteria are covered in ISO 11363‑2.
Applications and practical value
EN ISO 11363‑1:2018 is used to ensure interchangeability and correct mating of valves and gas cylinders across manufacturers and markets. Typical uses:
- Design and manufacturing of gas cylinder valve stems and cylinder necks to specified tapers and thread forms.
- Production engineering: tooling, thread cutting, and machining set‑up based on defined tapers, pitches and reference planes.
- Quality control and inspection planning (dimensional checks referenced; gauge inspection per ISO 11363‑2).
- Procurement and specification: calling out compliant thread types (17E / 25E) on drawings and purchase orders.
- Regulatory and conformity contexts where standardized mating interfaces are required.
Who should use this standard
- Gas cylinder manufacturers and valve producers
- Mechanical designers and HVAC / gas systems engineers
- Quality assurance and inspection laboratories
- Standardization and procurement teams in industrial gas supply
Related standards
- ISO 11363‑2 - Gauge inspection for 17E and 25E threads
- Other ISO/CEN transportable gas cylinder standards and national adoptions (EN ISO 11363‑1:2018 is the CEN-endorsed text)
Keywords: EN ISO 11363‑1:2018, ISO 11363‑1:2018, gas cylinders, 17E, 25E, taper threads, valve connection, BSW thread, taper ratio, thread pitch.
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2018
1DGRPHãþD
SIST EN ISO 11363-1:2010
SIST EN ISO 11363-1:2010/AC:2012
3OLQVNHMHNOHQNH.RQLþQDQDYRMD(LQ(]DSULNOMXþLWHYYHQWLODQDSOLQVNR
MHNOHQNRGHO 6SHFLILNDFLMH ,62
Gas cylinders - 17E and 25E taper threads for connection of valves to gas cylinders -
Part 1: Specifications (ISO 11363-1:2018)
Gasflaschen - 17E und 25E kegeliges Gewinde zur Verbindung von Ventilen mit
Gasflaschen - Teil 1: Spezifikationen (ISO 11363-1:2018)
Bouteilles à gaz - Filetages coniques 17E et 25E pour le raccordement des robinets sur
les bouteilles à gaz - Partie 1 : Spécifications (ISO 11363-1:2018)
Ta slovenski standard je istoveten z: EN ISO 11363-1:2018
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 11363-1
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2018
EUROPÄISCHE NORM
ICS 23.020.35 Supersedes EN ISO 11363-1:2010
English Version
Gas cylinders - 17E and 25E taper threads for connection
of valves to gas cylinders - Part 1: Specifications (ISO
11363-1:2018)
Bouteilles à gaz - Filetages coniques 17E et 25E pour le Gasflaschen - 17E und 25E kegeliges Gewinde zur
raccordement des robinets sur les bouteilles à gaz - Verbindung von Ventilen mit Gasflaschen - Teil 1:
Partie 1 : Spécifications (ISO 11363-1:2018) Spezifikationen (ISO 11363-1:2018)
This European Standard was approved by CEN on 25 September 2017.
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, 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11363-1:2018 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 11363-1:2018) 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 August 2018, and conflicting national standards shall
be withdrawn at the latest by August 2018.
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 11363-1:2010.
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, 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 the United Kingdom.
Endorsement notice
The text of ISO 11363-1:2018 has been approved by CEN as EN ISO 11363-1:2018 without any
modification.
INTERNATIONAL ISO
STANDARD 11363-1
Second edition
2018-01
Gas cylinders — 17E and 25E taper
threads for connection of valves to gas
cylinders —
Part 1:
Specifications
Bouteilles à gaz — Filetages coniques 17E et 25E pour le
raccordement des robinets sur les bouteilles à gaz —
Partie 1: Spécifications
Reference number
ISO 11363-1:2018(E)
©
ISO 2018
ISO 11363-1:2018(E)
© ISO 2018
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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
ISO 11363-1:2018(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 4
4.1 Thread rotation . 4
4.2 Taper . 4
4.3 Thread profile . 4
4.4 Pitch, P . 4
4.5 Dimensions . 4
5 Thread end finish . 6
6 Marking . 8
Bibliography . 9
ISO 11363-1:2018(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 on 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 in the Technical Barriers to Trade (TBT) see the following
URL: www .iso .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 58, Gas cylinders, Subcommittee SC 2,
Cylinder fittings.
This second edition cancels and replaces the first edition (ISO 1
...
Frequently Asked Questions
SIST EN ISO 11363-1:2018 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Gas cylinders - 17E and 25E taper threads for connection of valves to gas cylinders - Part 1: Specifications (ISO 11363-1:2018)". This standard covers: ISO 11363-1:2018 specifies dimensions and tolerances for taper screw threads of nominal diameter 17,4 mm (designated as 17E) and 25,8 mm (designated as 25E) used for the connection of valves to gas cylinders. ISO 11363-1:2018 does not cover the connection requirements for - mechanical strength, - gas tightness, and - capability of repeated assembly and dismounting operations. Gauge inspection is covered by ISO 11363‑2.
ISO 11363-1:2018 specifies dimensions and tolerances for taper screw threads of nominal diameter 17,4 mm (designated as 17E) and 25,8 mm (designated as 25E) used for the connection of valves to gas cylinders. ISO 11363-1:2018 does not cover the connection requirements for - mechanical strength, - gas tightness, and - capability of repeated assembly and dismounting operations. Gauge inspection is covered by ISO 11363‑2.
SIST EN ISO 11363-1:2018 is classified under the following ICS (International Classification for Standards) categories: 21.040.30 - Special screw threads; 23.020.35 - Gas cylinders. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN ISO 11363-1:2018 has the following relationships with other standards: It is inter standard links to SIST EN ISO 11363-1:2010/AC:2012, SIST EN ISO 11363-1:2010, SIST EN ISO 11363-1:2018/A1:2023. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase SIST EN ISO 11363-1:2018 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 SIST standards.
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...