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BRITISH STANDARDBS EN 1171:2002Incorporating Corrigendum No.1Industrial valves Cast iron gate valvesThe European Standard EN 1171:2002 has the status of a British StandardICS 23.060.30?Copyright British Standards Institution Reproduced by IHS under license with BSI-Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001,11/08/200400:18:27 MST Questions or comments about this message:please call the DocumentPolicy Group at 303-397-2295.-,-,-BS EN 1171:2002This British Standard,having been prepared under the direction of the Engineering Sector Policy and Strategy Committee,was published under the authority of the Standards Policy and Strategy Committee on 8 November 2002 BSI 9 June 2003ISBN 0 580 40709 8National forewordThis British Standard is the official English language version of EN 1171:2002.It supersedes BS 5150:1990 and BS 5151:1974 which are withdrawn.The UK participation in its preparation was entrusted by Technical Committee PSE/7,Industrial valves,to Subcommittee PSE/7/3,Cast iron globe,gate and check valves,which has the responsibility to:A list of organizations represented on this subcommittee committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled“International Standards Correspondence Index”,or by using the“Search”facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract.Users are responsible for its correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations.aid enquirers to understand the text;present to the responsible international/European committee any enquiries on the interpretation,or proposals for change,and keep the UK interests informed;monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover,an inside front cover,the EN title page,pages 2 to 18,an inside back cover and a back cover.The BSI copyright date displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd.No.DateComments14500 Corr.No.19 June 2003Addition of supersession details to national forewordCopyright British Standards Institution Reproduced by IHS under license with BSI-Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001,11/08/200400:18:27 MST Questions or comments about this message:please call the DocumentPolicy Group at 303-397-2295.-,-,-EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1171October 2002ICS 23.060.30English versionIndustrial valves-Cast iron gate valvesRobinetterie industrielle-Robinets-vannes en fonteIndustiearmaturen-Schieber aus GusseisenThis European Standard was approved by CEN on 2 September 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration.Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria,Belgium,Czech Republic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre:rue de Stassart,36 B-1050 Brussels 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref.No.EN 1171:2002 ECopyright British Standards Institution Reproduced by IHS under license with BSI-Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001,11/08/200400:18:27 MST Questions or comments about this message:please call the DocumentPolicy Group at 303-397-2295.-,-,-EN 1171:2002(E)2ContentspageForeword.31Scope.42Normative references.43Terms and definitions.54Requirements.64.1Design.64.2Functional characteristics.114.3Strength torque.125Test procedures.136Declaration of compliance.137Designation.138Marking,preparation for storage and transportation.148.1Marking.148.2Preparation for storage and transportation.14Annex A(informative)Information to be supplied by the customer.15Annex B(normative)Strength torque test.16Annex C(normative)Comparison between EN and ISO cast iron material grades.17Annex ZA(informative)Clauses of this European standard addressing essential requirements orother provisions of EU Directives.18Copyright British Standards Institution Reproduced by IHS under license with BSI-Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001,11/08/200400:18:27 MST Questions or comments about this message:please call the DocumentPolicy Group at 303-397-2295.-,-,-EN 1171:2002(E)3ForewordThis document(EN 1171:2002)has been prepared by Technical Committee CEN/TC 69 Industrial valves,thesecretariat 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 orby endorsement,at the latest by April 2003,and conflicting national standards shall be withdrawn at the latest byApril 2003.This document has been prepared under a mandate given to CEN by the European Commission and the EuropeanFree Trade Association,and supports essential requirements of EU Directive(s).For relationship with EU Directive(s),see informative annex ZA,which is an integral part of this document.In this European Standard the annex A is informative and the annexes B and C are normative.According to the CEN/CENELEC Internal Regulations,the national standards organizations of the followingcountries are bound to implement this European Standard:Austria,Belgium,Czech Republic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,Switzerland and the United Kingdom.Copyright British Standards Institution Reproduced by IHS under license with BSI-Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001,11/08/200400:18:27 MST Questions or comments about this message:please call the DocumentPolicy Group at 303-397-2295.-,-,-EN 1171:2002(E)41 ScopeThis European Standard specifies the requirements for cast iron gate valves with flanged ends,socket ends orspigot ends.This standard is applicable to cast iron gate valves mainly used for industrial and general-purpose applications.However,they can be used for other applications provided the requirements of the relevant performance standardsare met.The range of nominal sizes covered is:DN 40;DN 50;DN 65;DN 80;DN 100;DN 125;DN 150;DN 200;DN 250;DN 300;DN 350;DN 400;DN 450;DN 500;DN 600;DN 700;DN 800;DN 900;DN 1 000.The range of pressure designations covered is:isobaric PN 6;PN 10;PN 16;PN 25;isomorphic,PS 10 bar to PS 1 bar at room temperature.2 Normative referencesThis European Standard incorporates by dated or undated reference,provisions from other publications.Thesenormative references are cited at the appropriate places in the text,and the publications are listed hereafter.Fordated references,subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision.For undated references the latest edition of thepublication referred to applies(including amendments).EN 19,Industrial valves Marking of metallic valves.EN 545:2002,Ductile iron pipes,fittings,accessories and their joints for water pipelines Requirements and testmethods.EN 558-1:1995,Industrial valves Face-to-face and centre-to-face dimensions of metal valves for use in flangedpipe systems Part 1:PN-designated valves.EN 736-1,Valves Terminology Part 1:Definition of types of valves.EN 736-2,Valves Terminology Part 2:Definition of components of valves.EN 736-3,Valves Terminology Part 3:Definition of terms.EN 1092-2,Flanges and their joints Circular flanges for pipes,valves,fittings and accessories,PN designated Part 2:Cast iron flanges.EN 1561:1997,Founding Grey cast irons.EN 1562:1997,Founding Malleable cast irons.EN 1563:1997,Founding Spheroidal graphite cast irons.prEN 12266-11,Industrial valves Testing of valves-Part 1:Pressure tests,test procedures and acceptancecriteria Mandatory requirements.1 To be published.Copyright British Standards Institution Reproduced by IHS under license with BSI-Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001,11/08/200400:18:27 MST Questions or comments about this message:please call the DocumentPolicy Group at 303-397-2295.-,-,-EN 1171:2002(E)5EN 12266-2,Industrial valves Testing of valves Part 2:Tests,test procedures and acceptance criteria-Supplementary requirements.EN 12351,Industrial valves Protective caps for valves with flanged connections.EN 12516-3,Valves Shell design strength Part 3:Experimental Method.EN 12570,Industrial valves Method for sizing the operating element.EN ISO 5210,Industrial valves Multi-turn valve actuator attachments(ISO 5210:1991).ISO 185:1988,Grey cast iron-Classification.ISO 1083:1987,Spheroidal graphite cast iron-Classification.ISO 5922:1981,Malleable cast iron.NOTEThis European Standard supports some of the essential requirements of the Pressure EquipmentDirective 97/23/EC.The essential requirements covered are listed in annex ZA.It should be noted that this standard is not self-sufficient and should be used with the normative references listed herein.Reference should also be made to annex ZA in therelevant normative reference.3 Terms and definitionsFor the purposes of this European Standard,the definitions of types of valves and components and the definitionsof terms given in EN 736-1,EN 736-2 and EN 736-3 and the following terms and definitions apply.NOTEThe terms maximum allowable pressure,PS,and test pressure,PT,defined in EU Directive 97/23/EC(PED)areequivalent to the terms allowable pressure,ps,and test pressure,pt,defined in EN 736-3.3.1isomorphic seriesseries of cast iron gate valves of a specified type and design having maximum allowable pressures which tend todecrease as the nominal size increases(see Table 2)and having specific flanged end connections(see 4.1.3.2.1)3.2isobaric seriesseries of cast iron gate valves of a specified type and design having the same maximum allowable pressure for allnominal sizes3.3strength torquetorque applied directly to the operating mechanism or,when fitted,the operating device,which the valve is capableof withstandingCopyright British Standards Institution Reproduced by IHS under license with BSI-Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001,11/08/200400:18:27 MST Questions or comments about this message:please call the DocumentPolicy Group at 303-397-2295.-,-,-EN 1171:2002(E)64 Requirements4.1 Design4.1.1 Materials4.1.1.1The body and bonnet materials shall be selected from Table 1.The limits of use given in the materialstandard shall be taken into account.Table 1 Body and bonnet materialsDesignationGraphite structureEuropeanStandardRmN/mm2Short nameNumberEN 1561:1997200 aEN-GJL-200EN-JL1030Grey cast ironEN 1561:1997250EN-GJL-250EN-JL1040EN 1563:1997350EN-GJS-350-22-LTEN-JS1015EN 1563:1997350EN-GJS-350-22-RTEN-JS1014EN 1563:1997400EN-GJS-400-18-LTEN-JS1025EN 1563:1997400EN-GJS-400-18-RTEN-JS1024EN 1563:1997400EN-GJS-400-15EN-JS1030EN 1563:1997500EN-GJS-500-7EN-JS1050EN 1563:1997600EN-GJS-600-3EN-JS1060Spheroidal graphite castironEN 545:2002420-5EN-545-420-5-EN 1562:1997300EN-GJMB-300-6EN-JM1110Malleable cast ironEN 1562:1997350EN-GJMB-350-10EN-JM1130aGrade 200 shall not be used for valves with PN 25 flanged end connections.4.1.1.2All the internal parts in contact with the fluid shall be made of a material whose corrosion resistance tothe fluid being carried is at least equal to the body and bonnet material.4.1.1.3Trim materials shall have a chemical composition and mechanical properties,which ensure themechanical integrity of the valve and shall be stated in the manufacturers technical documentation.The trim comprises the following:a)stem;b)obturator seat;c)body seat;d)back seat(for valves DN 50 and above,when fitted).4.1.1.4Welding of grey cast iron and impregnation of castings of all materials is not permitted.Copyright British Standards Institution Reproduced by IHS under license with BSI-Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001,11/08/200400:18:27 MST Questions or comments about this message:please call the DocumentPolicy Group at 303-397-2295.-,-,-EN 1171:2002(E)74.1.2 Pressure/temperature ratings4.1.2.1 Isobaric seriesThe pressure/temperature ratings shall be in accordance with EN 1092-2 for the equivalent ISO material gradeexcept that valves with metallic seats shall not be used above 230 C and valves with soft seats shall not be usedabove 70 C.Annex C shall be used to determine the equivalent ISO material grade for the EN material grades specified inTable 1.4.1.2.2 Isomorphic seriesThe pressure/temperature ratings shall be as given in Table 2.Table 2 Pressure/temperature ratings for isomorphic seriesMaximum allowable pressure PS(bar)atDN 10 C/120 C150 C180 C200 C230 C40 to 8010012515010,09,08,48,07,42002506,05,45,04,84,43003504004505004,03,63,43,23,06007002,52,32,12,01,98001,61,41,31,31,29001 0001,00,90,80,80,74.1.2.3The use of isobaric valves at lower temperatures than shown in the pressure/temperature rating tablesin EN 1092-2 and of isomorphic valves at temperatures below those shown in Table 2 is permitted,providing thatthe body and bonnet is manufactured from spheroidal graphite cast iron material grades EN-GJS-350-22-LTor EN-GJS-400-18-LT.For temperatures below the lowest temperature shown in the rating tables the servicepressure shall be no greater than the pressure corresponding to the lowest temperature in the rating tables.Thelowest scheduled operating temperature shall be not less than the temperature specified in EN 1563 for the Charpyimpact tests.4.1.3 Dimensions4.1.3.1 Face-to-face and end-to-end dimensionsThe face-to-face dimensions of flanged valves shall be in accordance with the basic series given in Table 3.Copyright British Standards Institution Reproduced by IHS under license with BSI-Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001,11/08/200400:18:27 MST Questions or comments about this message:please call the DocumentPolicy Group at 303-397-2295.-,-,-EN 1171:2002(E)8Table 3 Basic