1、December 2015 English price group 17No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 23.060.40!%Iw0“2388413www.din.d
2、eDIN EN ISO 2503Gas welding equipment Pressure regulators and pressure regulators with flow-metering devices for gas cylinders used in welding, cutting and allied processes up to 300 bar (30 MPa) (ISO 2503:2009 + Amd 1:2015);English version EN ISO 2503:2009 + A1:2015,English translation of DIN EN IS
3、O 2503:2015-12Gasschweigerte Druckregler und Druckregler mit Durchflussmessgerten fr Gasflaschen fr Schweien, Schneiden und verwandte Prozesse bis 300 bar (30 MPa) (ISO 2503:2009 + Amd 1:2015);Englische Fassung EN ISO 2503:2009 + A1:2015,Englische bersetzung von DIN EN ISO 2503:2015-12Matriel de sou
4、dage aux gaz Dtendeurs et dtendeurs dbitmtres intgrs pour bouteilles gaz utiliss pour (ISO 2503:2009 + Amd 1:2015);Version anglaise EN ISO 2503:2009 + A1:2015,Traduction anglaise de DIN EN ISO 2503:2015-12SupersedesDIN EN ISO 2503:2009-11www.beuth.deDocument comprises 38 pagesDTranslation by DIN-Spr
5、achendienst.In case of doubt, the German-language original shall be considered authoritative.le soudage, le coupage et les techniques connexes jusqu 300 bar (30 MPa) 12.15DIN EN ISO 2503:2015-12 2 A comma is used as the decimal marker. National foreword This document (EN ISO 2503:2009 + A1:2015) has
6、 been prepared by Technical Committee ISO/TC 44 “Welding and allied processes” in collaboration with Technical Committee CEN/TC 121 “Welding and allied processes” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was DIN-Normenausschuss Schweien und verwandte Verfa
7、hren (DIN Standards Committee Welding and Allied Processes), Working Group NA 092-00-07 AA Ausrstung zum Gasschweien, Schneiden und verwandte Prozesse. This standard includes Amendment A1 approved by CEN on 2015-03-05. The start and finish of text introduced or altered by amendment is indicated in t
8、he text by tags !“. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 5171 DIN EN ISO 5171 ISO 7291 DIN EN ISO 7291 ISO 9090 DIN ISO 9090 ISO 9539 DIN EN ISO 9539 Amendments This standard differs from DIN EN ISO 2503:2009-11 as follows: a
9、) International Standard ISO 10225 has been included in the normative references; b) reference to ISO 10225 in Subclause 7.1 has been added and Table 5 has been deleted; c) in the German version, various translation errors have been corrected; d) the standard has been editorially revised. Previous e
10、ditions DIN 1906: 1925-04 DIN 8546: 1953-06, 1965-02, 1976-06, 1988-08 DIN EN 585: 1994-11 DIN EN 13918: 2003-08 DIN EN ISO 2503: 1998-10, 2009-11 DIN EN ISO 2503:2015-12 3 National Annex NA (informative) Bibliography DIN EN ISO 5171, Gas welding equipment Pressure gauges used in welding, cutting an
11、d allied processes DIN ISO 9090, Gas tightness of equipment for gas welding and allied processes DIN EN ISO 9539, Gas welding equipment Materials for equipment used in gas welding, cutting and allied processes DIN EN ISO 7291, Gas welding equipment Pressure regulators for manifold systems used in we
12、lding, cutting and allied processes up to 30 MPa (300 bar) DIN EN ISO 2503:2015-12 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 2503 July 2009 + A1 April 2015 ICS 25.160.30 English Version Gas welding equipment Pressure regulators and pressure regulator
13、s with flow-metering devices for gas cylinders used in welding, cutting and allied processes up to 300 bar (30 MPa) (ISO 2503:2009 + Amd 1:2015) Matriel de soudage aux gaz Dtendeurs et dtendeurs dbitmtres intgrs pour bouteilles gaz utiliss pour le soudage, le coupage et les techniques connexes jusqu
14、 300 bar (30 MPa) (ISO 2503:2009 + Amd 1:2015) Gasschweigerte Druckregler und Druckregler mit Durchflussmessgerten fr Gasflaschen fr Schweien, Schneiden und verwandte Prozesse bis 300 bar (30 MPa) (ISO 2503:2009 + Amd 1:2015)EN ISO 2503:2009 was approved by CEN on 2009-06-17 and Amendment A1:2015 on
15、 2015-03-05. 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
16、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 th
17、e 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, Ire
18、land, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue
19、 Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 2503:2009 + A1:2015 E2EN ISO 2503:2009 + A1:2015 (E) DIN EN ISO 2503:2015-12 Contents Page Foreword to EN ISO 2503:2009.3 !European forew ord to E
20、N ISO 2503:2009/A1:2015 4 1 Scope .5 2 Normative references .6 3 Terms and definitions 6 4 Symbols and abbreviated terms .8 5 Design requirements 8 5.1 Materials 8 5.2 Design and construction 8 6 Physical performance and operating characteristics 11 6.1 Pressures 11 6.2 Flow rates for pressure regul
21、ators without flow-metering devices . 11 6.3 Equipment classes for pressure regulators without flow-metering devices 11 6.4 Pressure-relief valve 13 6.5 Operating-temperature range . 13 6.6 Performance and operating characteristics . 13 7 Marking . 15 7.1 Pressure regulators without flow-metering de
22、vices 15 7.2 Pressure regulators with flow-metering devices 15 8 Instructions for use . 16 9 Type-test procedure 16 9.1 General 16 9.2 Test samples and necessary documents 17 9.3 Test conditions 17 9.4 Units 17 9.5 Test for performance and operating characteristics of pressure regulators without flo
23、w- metering devices . 18 9.6 Test for performance and operating characteristics of pressure regulators with flow- metering devices . 21 9.7 Tests for mechanical resistance of pressure regulators or pressure regulators with a flow-metering device . 23 9.8 Test for durability of markings . 27 Annex A
24、(informative) Pressure regulators 28 Annex B (informative) Operating principles of pressure regulators with flow-metering devices 32 Bibliography 34 3EN ISO 2503:2009 + A1:2015 (E) DIN EN ISO 2503:2015-12 Foreword to EN ISO 2503:2009 This document (EN ISO 2503:2009) has been prepared by Technical Co
25、mmittee 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 lates
26、t by January 2010, and conflicting national standards shall be withdrawn at the latest by January 2010. 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 su
27、ch patent rights. This document supersedes EN ISO 2503:1998, EN 13918:2003. 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, Cyprus, Czech Republic, Denmark, E
28、stonia, 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 2503:2009 has been approved by C
29、EN as EN ISO 2503:2009 without any modification. 4EN ISO 2503:2009 + A1:2015 (E) DIN EN ISO 2503:2015-12 !European foreword to EN ISO 2503:2009/A1:2015 This document (EN ISO 2503:2009/A1:2015) has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes” in collaboration with Tec
30、hnical Committee CEN/TC 121 “Welding and allied processes” the secretariat of which is held by DIN. This Amendment to the European Standard EN ISO 2503:2009 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2015,
31、and conflicting national standards shall be withdrawn at the latest by October 2015. 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. A
32、ccording 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, Germ
33、any, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 2503:2009/Amd 1:2015 has been approved by CEN as EN I
34、SO 2503:2009/A1:2015 without any modification.“ 1 Scope This International Standard specifies requirements for single or two-stage pressure regulators without flow-metering devices for connection to gas cylinders used for compressed gases up to 300 bar 1)(30 MPa), dissolved acetylene, liquefied petr
35、oleum gases (LPG), methylacetylene-propadiene mixtures (MPS), and carbon dioxide (CO2), for use in welding, cutting and allied processes. It does not cover pressure regulators having a nominal outlet pressure p2 20 bar. This International Standard also specifies requirements for single or two-stage
36、pressure regulators with flow-metering devices for connection to gas cylinders used for compressed gases or mixtures up to 300 bar (30 MPa), and carbon dioxide (CO2), for use in welding, cutting and allied processes. Typical processes using this equipment are: tungsten inert-gas arc welding (TIG), m
37、etal-arc inert-gas welding (MIG), metal-arc active-gas welding (MAG), plasma arc welding, tubular-cored-wiretubular-cored-wire welding and plasma cutting. Annex B gives examples of flow-control systems and their flow-measuring devices. This International Standard does not cover pressure regulators i
38、ntended for direct use on cylinder bundles. Such regulators comply with the safety requirements of ISO 7291, in particular with the adiabatic compression test for oxygen regulators. NOTE In addition to terms used in English and French, two of the three official ISO languages (English, French and Rus
39、sian), this document gives the equivalent terms in German; these are published under the responsibility of the member body for Germany (DIN), and are given for information only. Only the terms and definitions given in the official languages can be considered as ISO terms and definitions. 1) 300 bar
40、relates to the maximum cylinder filling pressure at 15 C. 5EN ISO 2503:2009 + A1:2015 (E) DIN EN ISO 2503:2015-12 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 refere
41、nces, the latest edition of the referenced document (including any amendments) applies. ISO 554, Standard atmospheres for conditioning and/or testing Specifications ISO 5145, Cylinder valve outlets for gases and gas mixtures Selection and dimensioning ISO 5171, Gas welding equipment Pressure gauges
42、used in welding, cutting and allied processes ISO/TR 7470, Valve outlets for gas cylinders List of provisions which are either standardized or in use ISO 9090, Gas tightness of equipment for gas welding and allied processes ISO 9539, Materials for equipment used in gas welding, cutting and allied pr
43、ocesses ISO 15296, Gas welding equipment Vocabulary Terms used for gas welding equipment 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 15296 and the following apply. 3.1 accuracy of a flow-metering device classification based on the permissible err
44、or of the flow indication of the device 3.2 adjustable pressure regulators pressure regulator that is provided with a means of operator adjustment at the outlet pressure NOTE See A.1. 3.3 fixed orifice device, which delivers but does not indicate, a known flow when supplied with a constant upstream
45、pressure and facing no significant back pressure 3.4 flow gauge device which measures pressure and which is calibrated in units of flow NOTE The flow gauge does not measure flow. It indicates flow by measuring the pressure upstream of a fixed orifice. 3.5 flow meter device that measures and indicate
46、s the flow of a specific gas or gas mixture 3.6 indicated flow(s) flow(s) indicated on the measuring device of a pressure regulator with a flow-metering device 6EN ISO 2503:2009 + A1:2015 (E) DIN EN ISO 2503:2015-12 !ISO 10225, Gas welding equipment Marking for equipment used for gas welding, cuttin
47、g and alliedprocesses“ 3.7 maximum intermediate pressure p2m for pressure regulators with flow-metering devices, maximum pressure specified by the manufacturer and measured in the intermediate pressure chamber, downstream of the pressure-regulator valve and upstream of the flow-adjusting and measuri
48、ng device NOTE This maximum pressure is defined for the pressure-regulator tests, and is above the normal operating pressure of the flow meter. 3.8 nominal discharge Qn for pressure regulators with flow-metering devices, discharge specified by the manufacturer (measured downstream of the flow-adjust
49、ing and measuring devices) 3.9 permissible error of the flow indication difference between the indicated flow and the true flow, as a percentage of the indicated flow 3.10 preset pressure regulator pressure regulator that is not provided with a means of operator adjustment at the outlet pressure NOTE See A.2. 3.11 pressure gauge device that measures and indicates pressure 3.12 pressure regulator device for regulating a generally variable inlet pressure to an outlet pressure that is as constan
