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1、Licensed Copy:FELIX HERZING,TUV RHEINLAND BERLIN BRANDENBURG 5954918,10 March 2004,Uncontrolled Copy,(c)BSIBritish StandardA single copy of this British Standard is licensed toFELIX HERZING10 March 2004This is an uncontrolled copy.Ensure use of the mostcurrent version of this document by searching B
2、ritishStandards Online at bsonline.techindex.co.ukBRITISH STANDARDBS EN 1092-4:2002Flanges and their joints Circular flanges for pipes,valves,fittings and accessories,PN designated Part 4:Aluminium alloy flangesThe European Standard EN 1092-4:2002 has the status of a British StandardICS 23.040.60?Li
3、censed Copy:FELIX HERZING,TUV RHEINLAND BERLIN BRANDENBURG 5954918,10 March 2004,Uncontrolled Copy,(c)BSIBS EN 1092-4:2002This 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 a
4、nd Strategy Committee on 23 July 2002 BSI 23 July 2002ISBN 0 580 40132 4National forewordThis British Standard is the official English language version of EN 1092-4:2002.The UK participation in its preparation was entrusted to Technical Committee PSE/15,Flanges,which has the responsibility to:A list
5、 of organizations represented on this 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 C
6、orrespondence 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
7、 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 p
8、romulgate 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 thedocument was last issued.Amendments issued since publicationA
9、md.No.DateCommentsLicensed Copy:FELIX HERZING,TUV RHEINLAND BERLIN BRANDENBURG 5954918,10 March 2004,Uncontrolled Copy,(c)BSIEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1092-4May 2002ICS 23.040.60English versionFlanges and their joints-Circular flanges for pipes,valves,fittings and accessories
10、,PN designated-Part 4:Aluminiumalloy flangesBrides et leurs assemblages-Brides circulaires pourtubes,appareils de robinetterie,raccords et accessoires,dsignes PN-Partie 4:Brides en alliages daluminiumFlansche und ihre Verbindungen-Runde Flansche frRohre,Armaturen,Formstcke und Zubehrteile,nach PNbez
11、eichnet-Teil 4:Flansche aus AluminiumlegierungenThis European Standard was approved by CEN on 28 March 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 alterati
12、on.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 t
13、he 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,Nethe
14、rlands,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
15、for CEN national Members.Ref.No.EN 1092-4:2002 ELicensed Copy:FELIX HERZING,TUV RHEINLAND BERLIN BRANDENBURG 5954918,10 March 2004,Uncontrolled Copy,(c)BSIEN 1092-4:2002(E)2ContentspageForeword-31Scope-42Normative references-43Terms and definitions-54Designations-54.1Range of DN54.2Range of PN desig
16、nations54.3Types of flanges54.4Designation of flanges55General requirements-65.1Flange materials65.2Repairs65.3Bolting65.4Gaskets65.5Pressure temperature(p/T)ratings65.6Dimensions65.7Flange facings75.8Spot facing and back facing of flanges75.9Tolerances75.10Marking7Figure 1-Types of flanges8Figure 2
17、-Flange facings9Figure 3-Dimensions of PN 10 flanges10Figure 4-Dimensions of PN 16 flanges11Figure 5-Dimensions of PN 25 flanges12Figure 6-Dimensions of PN 40 flanges13Figure 7-Dimensions of PN 63 flanges14for15Annex A (informative)Masses of flanges-16Annex ZA (informative)Clauses of this European S
18、tandard addressingessential requirements(ERs)or other provisions of EU Directives-17Table 1-Synoptic table8Table 2-Flange facing dimensions9Table 3-Surface finish of flange jointing faces9Table 4-Dimensions of PN 10 flanges10Table 5-Dimensions of PN 16 flanges11Table 6-Dimensions of PN 25 flanges12T
19、able 7-Dimensions of PN 40 flanges13Table 8-Dimensions of PN 63 flanges14Table 9-Tolerances on dimensions15Table 10-p/T ratings15Table A.1-Masses of flanges16Table ZA.1-Correspondence between this European Standard and Directive97/23/EC17Licensed Copy:FELIX HERZING,TUV RHEINLAND BERLIN BRANDENBURG 5
20、954918,10 March 2004,Uncontrolled Copy,(c)BSIEN 1092-4:2002(E)3ForewordThis document EN 1092-4:2002 has been prepared by Technical Committee CEN/TC 74 Flangesand their joints,the secretariat of which is held by DIN.This European Standard shall be given the status of a national standard,either by pub
21、lication of anidentical text or by endorsement,at the latest by November 2002,and conflicting national standardsshall be withdrawn at the latest by November 2002.This document has been prepared under a mandate given to CEN by the European Commission andthe European Free Trade Association,and support
22、s essential requirements of EU Directive(s).For relationship with EU Directive(s),see informative annex ZA,which is an integral part of thisdocument.EN 1092 consists of the following four parts:Part 1:Steel flanges;Part 2:Cast iron flanges;Part 3:Copper alloy flanges;Part 4:Aluminium alloy flanges.T
23、he mating dimensions of the flanges of this standard are compatible with those flanges of othermaterials in accordance with the other parts of EN 1092 and with those flanges of ISO 7005.Annex A is informative.According to the CEN/CENELEC Internal Regulations,the national standards organizations of t
24、hefollowing countries are bound to implement this European Standard:Austria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,Switzerland and the United Kingdom.Licensed Copy:FELIX HERZING,TUV RHEINLAND BERLIN
25、BRANDENBURG 5954918,10 March 2004,Uncontrolled Copy,(c)BSIEN 1092-4:2002(E)41ScopeThis European Standard specifies requirements for PN designated circular flanges for pipes,valves,fittings and accessories made from aluminium alloy in the range of DN 15 to DN 600 and PN10 toPN 63(see Table 1).This Eu
26、ropean Standard specifies the types of flanges and their facings,dimensions and tolerances,bolt sizes,surface finish of jointing faces,marking and materials together with associatedpressure/temperature(p/T)ratings.The flanges are intended to be used for piping as well as for pressure vessels.2Normat
27、ive referencesThis European Standard incorporates by dated or undated reference,provisions from otherpublications.These normative references are cited at the appropriate places in the text,and thepublications are listed hereafter.For dated references,subsequent amendments to or provisions ofany of t
28、hese publications apply to this European Standard only when incorporated in it byamendment or revision.For undated references the latest edition of the publication referred toapplies(including amendments).EN 764,Pressure equipment-Terminology and symbols-Pressure,temperature,volume.EN 1333,Pipework
29、components-Definition and selection of PN.EN 1514,Flanges and their joints-Dimensions of gaskets for PN-designated flanges.EN 1515-1,Flanges and their joints-Bolting-Part 1:Selection of bolting.EN 12392,Aluminium and aluminium alloys-Wrought products-Special requirements for productsintended for the
30、 production of pressure equipment.EN ISO 887,Plain washers for metric bolts,screws and nuts for general purposes-General plan(ISO 887:2000).EN ISO 4287,Geometrical product specifications(GPS)-Surface texture:Profile method-Terms,definitions and surface texture parameters(ISO 4287:1997).EN ISO 6708,P
31、ipework Components-Definition and selection of DN(nominal size)(ISO 6708:1995).Licensed Copy:FELIX HERZING,TUV RHEINLAND BERLIN BRANDENBURG 5954918,10 March 2004,Uncontrolled Copy,(c)BSIEN 1092-4:2002(E)53Terms and definitionsFor the purposes of this European Standard the following terms and definit
32、ions apply.3.1DNsee EN ISO 67083.2PNsee EN 13333.3Ra,Rzsee EN ISO 42873.4maximum allowable pressure,PSPS means the maximum pressure for which the equipment is designed,as specified by theequipment manufacturer(See also EN 764,where it is defined as allowable pressure pS).3.5maximum allowable tempera
33、ture,TSTS means the maximum temperature for which the equipment is designed,as specified by theequipment manufacturer(See also EN 764,where it is defined as allowable temperature tS).4Designations4.1Range of DNThe range of DN applicable to each PN shall be as given in Table 1.4.2Range of PN designat
34、ionsThe range of PN designations shall be as given in Table 1.4.3Types of flangesFigure 1 illustrates flanges identified according to type:a)Type 05Blank flange;b)Type 11Weld-neck flange.4.4Designation of flangesThe designation of the flanges shall contain the following information:a)Description(fla
35、nge);b)Number of this standard(EN 1092-4);c)Flange type number(11,05 resp.);d)Flange facing type(e.g.C);e)DN(e.g.DN 300);f)For type 11 flanges only,the neck diameter,A and the neck thickness,S,(e.g.324 x 4);g)PN(e.g.PN 40);h)Material(e.g.EN AW-5083-O).Licensed Copy:FELIX HERZING,TUV RHEINLAND BERLIN
36、 BRANDENBURG 5954918,10 March 2004,Uncontrolled Copy,(c)BSIEN 1092-4:2002(E)6EXAMPLE 1For a type 11 flange:Flange EN 1092-4-11-C-DN 300-324 x 4-PN 40-EN AW-5083-OEXAMPLE 2For a type 05 flange:Flange EN 1092-4-05-C-DN 300-PN 40-EN AW-5083-O5General requirements5.1Flange materialsFlanges shall be manu
37、factured from the material grades EN AW-5083(AlMg4,5Mn0,7)-O orEN AW-6061(AlMg1SiCu)-T6 as specified in EN 12392.Other materials may be used.For thep/T ratings see 5.5.Weld-neck flanges shall be forged or made from extruded bars;blank flanges shall be forged ormade from plate.5.2RepairsRepair weldin
38、g of the flanges is not permitted.5.3Bolting5.3.1The bolting shall be chosen according to the pressure,temperature and gasket.5.3.2Bolting materials shall be selected according to the following criteria:a)For all service conditions in accordance with EN 1515-1(bolt/nut):5.6/5,8.8/8,25Ni-15Cr-Ti/25Ni
39、-15Cr-Ti,A4-70/A4-70,A2-70/A2-70,18Cr-9Ni-Mo-AT+C/18Cr-9Ni-Mo,18Cr-9Ni-AT+C/18Cr-9Ni;b)For less severe service conditions e.g.water service or in case of oversized flanged joints,inaccordance with EN 1515-1(bolt/nut):A4-50/A4-50,A2-50/A2-50,18Cr-9Ni-Mo/18Cr-9Ni-Mo,18Cr-9Ni/18Cr-9Ni;The choice of thi
40、s bolting shall be based on either special experience or on recalculations.c)Where bolting other than specified in EN 1515-1 is required,this shall be chosen according tothe parameters above so that the flanged joint remains tight under the expected operatingconditions.5.3.3The use of washers(EN ISO
41、 887)is recommended.5.4GasketsGaskets shall be selected from the relevant part of EN 1514.NOTEIf spiral wound gaskets are selected,than they should be low stress design(y=5000,m=3 forcalculation in accordance with ASME Code).5.5Pressure temperature(p/T)ratingsThe pressure temperature ratings(p/T rat
42、ings)for the material grades in 5.1 are given in Table 10.For other aluminium alloys,which may be used,the p/T ratings shall be established according to theservice conditions.5.6Dimensions5.6.1Dimensions of flanges shall be in accordance with Figure 3 to Figure 7 and as appropriatethe following Tabl
43、es:PN 10 flanges:Table 4;Licensed Copy:FELIX HERZING,TUV RHEINLAND BERLIN BRANDENBURG 5954918,10 March 2004,Uncontrolled Copy,(c)BSIEN 1092-4:2002(E)7 PN 16 flanges:Table 5;PN 25 flanges:Table 6;PN 40 flanges:Table 7;PN 63 flanges:Table 8.NOTE 1Approximate masses of flanges are given in annex A.NOTE
44、 2Figures 3 to 7 are identical.They are repeated for better handling of the standard.5.6.2Bolt holes shall be equally spaced on the pitch circle diameter.5.6.3If the neck thickness,S is ordered smaller than given in Tables 4 to 8,the inside diameter atthe neck shall be tapered at an angle of 14 to 1
45、8.If S is ordered greater,the bore diameter shallbe AS2.5.7Flange facings5.7.1Types of facings The types of flange facings shall be as given in Figure 2,and their dimensions shall be as given inTable 2.If not stated in the purchase order,flange facing B1 is standard for flanges up to PN 40,flange fa
46、cingB2 is standard for PN 63 flanges.5.7.2Jointing face finish All flange jointing faces shall be machine finished and,when compared by visual or tactile meanswith reference specimens,shall be in accordance with Table 3.NOTE 1It is not intended that instrument measurements are taken on the jointing
47、faces.NOTE 2Other jointing face finishes may be agreed.For jointing face type B1,turning shall be carried out with a round-nosed tool in accordance withTable 3.5.8Spot facing and back facing of flanges Any spot facing and back facing required shall not reduce the flange thickness to less than thethi
48、ckness specified.When spot facing is used,the diameter shall be large enough to accommodatethe outside diameter of the equivalent normal series of washers in accordance with EN ISO 887 forthe bolt size being fitted.When a flange is back faced,it is permissible for the fillet radius to bereduced but
49、it shall not be eliminated entirely.5.9Tolerances Tolerances on dimensions shall be as specified in Table 9.5.10 Marking All flanges shall be marked as follows:a)Flange manufacturers name or trade-mark(e.g.xxx);b)Number of this standard(EN 1092-4);c)DN(e.g.DN 300);d)PN(e.g.PN 25);e)Neck thickness if
50、 not standard(e.g.7,1);f)Material designation(e.g.EN AW-5083-O);g)Batch number or suitable quality control number traceable to the batch number when testcertification is required(e.g.yyy).Licensed Copy:FELIX HERZING,TUV RHEINLAND BERLIN BRANDENBURG 5954918,10 March 2004,Uncontrolled Copy,(c)BSIEN 10