EN ISO 7291:2010
(Main)Gas welding equipment - Pressure regulators for manifold systems used in welding, cutting and allied processes up to 30 MPa (300 bar) (ISO 7291:2010)
Gas welding equipment - Pressure regulators for manifold systems used in welding, cutting and allied processes up to 30 MPa (300 bar) (ISO 7291:2010)
ISO 7291:2010 specifies requirements and test methods for pressure regulators in manifold systems used in welding, cutting, and allied processes for: a) compressed gases up to 30 MPa (300 bar); b) dissolved acetylene; c) liquefied petroleum gases (LPG); d) methylacetylene‑propadiene‑mixtures (MPS); e) carbon dioxide (CO2).
It is not applicable to pressure regulators fitted directly to the gas cylinders, as defined in ISO 2503.
Gasschweißgeräte - Hauptstellendruckregler für Schweißen, Schneiden und verwandte Prozesse bis 30 MPa (300 bar) (ISO 7291:2010)
Diese Internationale Norm legt die Anforderungen und die Prüfmethoden für Hauptstellendruckregler fest, die in Flaschenbatterieanlagen zum Schweißen, Schneiden und für verwandte Prozesse eingesetzt werden für:
a) komprimierte Gase bis zu 30 MPa1) (300 bar);
b) gelöstes Acetylen;
c) verflüssigte Erdgase (LPG);
d) Methylacetylen-Propadien-Gemische (MPS);
e) Kohlenstoffdioxid (CO2).
Sie gilt nicht für unmittelbar an Gasflaschen montierte Druckregler nach ISO 2503 [2].
Matériel de soudage aux gaz - Détendeurs de centrale de bouteilles pour le soudage, le coupage et les techniques connexes jusqu'à 30 MPa (300 bar) (ISO 7291:2010)
L'ISO 7291:2010 spécifie les exigences et les méthodes d'essai relatives aux détendeurs de centrale de bouteilles utilisés pour le soudage, le coupage et les techniques connexes, pour: a) les gaz comprimés jusqu'à 30 MPa (300 bar); b) l'acétylène dissous; c) les gaz de pétrole liquéfiés (GPL); d) les mélanges de méthylacétylène-propadiène (MPS); e) le dioxyde de carbone (CO2).
Elle n'est pas applicable aux détendeurs directement fixés sur les bouteilles de gaz, tels que définis dans l'ISO 2503.
Oprema za plamensko varjenje - Glavni regulatorji tlaka plina za varjenje, rezanje in sorodne postopke za tlake do 30 MPa (300 bar) (ISO 7291:2010)
Ta mednarodni standard določa zahteve in preskusne metode za glavne regulatorje tlaka plina, ki se uporabljajo za: - stisnjene pline do 30 000 kPa (300 bar); - raztopljeni acetilen; - utekočinjene naftne pline (UNP); - metilacetilen-propadienove zmesi (MPS); - ogljikov dioksid (CO2); - za uporabo pri varjenju, rezanju in sorodnih postopkih. Ne velja za regulatorje tlaka, nameščene neposredno na plinske jeklenke, kot je opredeljeno v ISO 2503.
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2012
1DGRPHãþD
SIST EN ISO 7291:2002
Oprema za plamensko varjenje - Glavni regulatorji tlaka plina za varjenje, rezanje
in sorodne postopke za tlake do 30 MPa (300 bar) (ISO 7291:2010)
Gas welding equipment - Pressure regulators for manifold systems used in welding,
cutting and allied processes up to 30 MPa (300 bar) (ISO 7291:2010)
Gasschweißgeräte - Hauptstellendruckregler für Schweißen, Schneiden und verwandte
Prozesse bis 30 MPa (300 bar) (ISO 7291:2010)
Matériel de soudage aux gaz - Détendeurs de centrale de bouteilles pour le soudage, le
coupage et les techniques connexes jusqu'à 30 MPa (300 bar) (ISO 7291:2010)
Ta slovenski standard je istoveten z: EN ISO 7291:2010
ICS:
23.060.40 7ODþQLUHJXODWRUML Pressure regulators
25.160.30 Varilna oprema Welding equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 7291
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2010
ICS 25.160.30 Supersedes EN ISO 7291:2001
English Version
Gas welding equipment - Pressure regulators for manifold
systems used in welding, cutting and allied processes up to 30
MPa (300 bar) (ISO 7291:2010)
Matériel de soudage aux gaz - Détendeurs de centrale de Gasschweißgeräte - Hauptstellendruckregler für
bouteilles pour le soudage, le coupage et les techniques Schweißen, Schneiden und verwandte Prozesse bis 30
connexes jusqu'à 30 MPa (300 bar) (ISO 7291:2010) MPa (300 bar) (ISO 7291:2010)
This European Standard was approved by CEN on 23 October 2010.
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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 7291:2010: E
worldwide for CEN national Members.
Contents Page
Foreword .3
Foreword
This document (EN ISO 7291:2010) has been prepared by Technical Committee ISO/TC 44 "Welding and
allied processes" in collaboration with Technical Committee CEN/TC 121 “Welding” 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 May 2011, and conflicting national standards shall be withdrawn at the
latest by May 2011.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 7291:2001.
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, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 7291:2010 has been approved by CEN as a EN ISO 7291:2010 without any modification.
INTERNATIONAL ISO
STANDARD 7291
Third edition
2010-11-01
Gas welding equipment — Pressure
regulators for manifold systems used in
welding, cutting and allied processes up
to 30 MPa (300 bar)
Matériel de soudage aux gaz — Détendeurs de centrale de
bouteilles pour le soudage, le coupage et les techniques connexes
jusqu'à 30 MPa (300 bar)
Reference number
ISO 7291:2010(E)
©
ISO 2010
ISO 7291:2010(E)
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ii © ISO 2010 – All rights reserved
ISO 7291:2010(E)
Contents Page
Foreword .iv
1 Scope.1
2 Normative references.1
3 Terms and definitions .2
4 Units.3
4.1 Pressure .3
4.2 Flow.3
4.3 Temperature.3
5 Manufacturing requirements.3
5.1 Materials .3
5.2 Design, machining and assembly.4
6 Physical characteristics .6
6.1 General .6
6.2 Pressures .7
6.3 Flow rates.7
6.4 Operating characteristics .9
7 Marking.10
7.1 Pressure regulator.10
7.2 Pressure relief devices .10
8 Instructions for use.10
9 Type test procedure .11
9.1 General .11
9.2 Test conditions.11
9.3 Functional tests.12
9.4 Tests for mechanical resistance of pressure regulators .14
9.5 Test for durability of markings.18
Bibliography.19
ISO 7291:2010(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 7291 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee
SC 8, Equipment for gas welding, cutting and allied processes.
This third edition cancels and replaces the second edition (ISO 7291:1999), which has been technically
revised.
Requests for official interpretations of any aspect of this International Standard should be directed to the
Secretariat of ISO/TC 44/SC 8 via your national standards body. A complete listing of these bodies can be
found at www.iso.org.
iv © ISO 2010 – All rights reserved
INTERNATIONAL STANDARD ISO 7291:2010(E)
Gas welding equipment — Pressure regulators for manifold
systems used in welding, cutting and allied processes up
to 30 MPa (300 bar)
1 Scope
This International Standard specifies requirements and test methods for pressure regulators in manifold
systems used in welding, cutting, and allied processes for:
1)
a) compressed gases up to 30 MPa (300 bar);
b) dissolved acetylene;
c) liquefied petroleum gases (LPG);
d) methylacetylene-propadiene-mixtures (MPS);
e) carbon dioxide (CO ).
[2]
It is not applicable to pressure regulators fitted directly to the gas cylinders, as defined in ISO 2503 .
2 Normative references
The following referenced documents are indispensable for the application 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.
ISO 5171, Gas welding equipment — Pressure gauges used in welding, cutting and allied processes
ISO 9090, Gas tightness of equipment for gas welding and allied processes
ISO 9539, Gas welding equipment — Materials for equipment used in gas welding, cutting and allied
processes
ISO 15296, Gas welding equipment — Vocabulary — Terms used for gas welding equipment
1) The value 30 MPa relates to maximum cylinder filling pressure at 15 °C.
ISO 7291:2010(E)
3 Terms and definitions
For the purposes of this document, th
...
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