1、May 2017 English price group 7No 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 23.040.99!%e)q“2660678www.din.deDIN E
2、N ISO 6553Automatic steam traps Marking (ISO 6553:2016);English version EN ISO 6553:2017,English translation of DIN EN ISO 6553:2017-05Kondensatableiter Kennzeichnung (ISO 6553:2016);Englische Fassung EN ISO 6553:2017,Englische bersetzung von DIN EN ISO 6553:2017-05Purgeurs automatiques de vapeurs d
3、eau Marquage (ISO 6553:2016);Version anglaise EN ISO 6553:2017,Traduction anglaise de DIN EN ISO 6553:2017-05SupersedesDIN ISO 6553:198112, withdrawn 201305www.beuth.deDocument comprises 10 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered aut
4、horitative.05.17 DIN EN ISO 6553:2017-05 2 A comma is used as the decimal marker. National foreword This document (EN ISO 6553:2017) has been prepared by Technical Committee ISO/TC 153 “Valves” in collaboration with Technical Committee CEN/TC 69 “Industrial valves” (Secretariat: AFNOR, France). The
5、responsible German body involved in its preparation was DIN-Normenausschuss Armaturen (DIN Standards Committee Valves), Working Committee NA 003-01-11 AA “Valves and special valves for the process industry”. Amendments This standard differs from DIN ISO 6553:1981-12 (withdrawn 2013-05) as follows: a
6、) the marking has been adapted to be in line with ISO 5209 and EN 19. Previous editions DIN ISO 6553: 1981-12 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 6553 January 2017 ICS 23.060.01 Supersedes EN 26553:1991 English Version Automatic steam traps - Marking (ISO 6553:2016) Purgeurs aut
7、omatiques de vapeurs deau - Marquage (ISO 6553:2016) Kondensatableiter - Kennzeichnung (ISO 6553:2016) This European Standard was approved by CEN on 23 December 2016. This European Standard was corrected and reissued by the CEN-CENELEC Management Centre on 8 February 2017. CEN members are bound to c
8、omply 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-CENE
9、LEC 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
10、 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, Luxembo
11、urg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION E UROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000
12、 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 6553:2017 E Foreword .4Introduction 51 Scope . 62 Normative references 63 Terms and definitions . 64 General requirements . 65 Mandatory marking. 66 Optional markin
13、gs 77 Additional markings . 7Bibliography 8Contents PageEN ISO 6553:2017 (E) DIN EN ISO 6553:2017-05 2European foreword 3European foreword This document (EN ISO 6553:2017) has been prepared by Technical Committee ISO/TC 153 “Valves” in collaboration with Technical Committee CEN/TC 69 “Industrial val
14、ves” the secretariat of which is held by AFNOR.” the secretariat of which is held by AFNOR. 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 July 2017, and conflicting national standards shall be w
15、ithdrawn at the latest by July 2017. 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 26553:1991. According
16、 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, Gre
17、ece, 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 6553:2016 has been approved by CEN as EN ISO 6553:201
18、7 without any modification. EN ISO 6553:2017 (E) DIN EN ISO 6553:2017-05 3 ForewordISO (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 te
19、chnical 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 close
20、ly 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 ne
21、eded 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
22、 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
23、 this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principl
24、es in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.This document was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 69, Industrial valves, in collaboration with ISO Technical Committee ISO/TC 153, Valves, in accor
25、dance with the agreement on technical cooperation between ISO and CEN (Vienna Agreement).This second edition cancels and replaces the first edition (ISO 6553:1980), which has been technically revised with the marking updated to be in accordance with ISO 5209 and EN 19.EN ISO 6553:2017 (E) DIN EN ISO
26、 6553:2017-05 4 IntroductionThe purpose of this document is to establish certain basic requirements for the marking of automatic steam traps, and to give recommendations for additional information markings.This document has, in general, to be considered in conjunction with the specific requirements
27、which may be agreed between the parties concerned.EN ISO 6553:2017 (E) DIN EN ISO 6553:2017-05 5 1 ScopeThis document specifies mandatory and optional markings for automatic steam traps.2 Normative referencesThere are no normative references in this document.3 Terms and definitionsFor the purposes o
28、f this document, the terms and definitions given in ISO 6552 apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp4 General
29、 requirementsThe specified markings shall be applied: either on the body, or on plates integral with the body or securely fixed on the body.In no case shall the markings be hidden by the fixing elements of the steam trap.5 Mandatory markingThe following items shall be marked on the automatic steam t
30、rap: manufacturers name and/or trademark; maximum allowable pressure (bar or MPa)1); maximum allowable temperature (C); indication of the flow direction (arrow); shell material designation; nominal size (DN or NPS); nominal pressure (PN or Class designation).This marking is in compliance with ISO 52
31、09 and EN 19. If a steam trap has no defined PN or Class designation, maximum allowable pressure and maximum allowable temperature are mandatory.For PN or Class designated steam traps, it is permissible to omit the letters “DN” or “NPS” from the nominal size designation provided the PN or Class desi
32、gnation follows immediately after the size 1) 1 bar = 0,1 MPa.EN ISO 6553:2017 (E) DIN EN ISO 6553:2017-05 6 number and is on the same line. For example, DN 50 PN 25 may be abbreviated to 50 PN 25 and NPS 2 Class 300 may be abbreviated to 2 CL 300.NOTE For steam traps less than or equal to DN 50 or
33、NPS 2, the shell material marking can be omitted.6 Optional markingsThe following items may be marked on the automatic steam trap: maximum operating pressure, or maximum differential pressure, according to the relative significance of each one; maximum test pressure (bar or MPa).7 Additional marking
34、sA manufacturer having complied with the requirements in Clause 4 to Clause 6 maya) mark any of the items mentioned in Clause 5 and Clause 6 in more than one place,EXAMPLE 1 If an item is marked on the body, it may also be repeated on the identification plate.b) add any other markings.EXAMPLE 2 Cata
35、logue item numbers, provided that there is no risk of confusion between these markings and those mentioned in Clause 5 and Clause 6.EN ISO 6553:2017 (E) DIN EN ISO 6553:2017-05 7 Bibliography1 ISO 5209, General purpose industrial valves Marking2 ISO 6552, Automatic steam traps Definition of technical terms3 EN 19, Industrial valves Marking of metallic valvesEN ISO 6553:2017 (E) DIN EN ISO 6553:2017-05 8
