Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 3: Copper alloy flanges

This European Standard specifies requirements for circular copper alloy flanges and copper alloy collars combined with loose steel plate flanges in PN designations from PN 6 to PN 40 and nominal sizes from DN 10 to DN 1800 in the types shown in Table 1.
This standard also specifies dimensions and tolerances, materials and their associated pressure/temperature (p/T) ratings, flange facings and related surface finish, weld repairs, and marking, together with information on bolting, gaskets, application/installation and approximate flange masses.
The flanges specified, with the exception of integral (type 21) flanges, are for attachment to copper or copper alloy tubes in accordance with EN 12449.
NOTE 1   When the flanges specified in this standard are required for use with copper or copper alloy tubes to EN 1057 in those tube diameters which are different to EN 12449, this should be agreed between the equipment manufacturer and the flange manufacturer.
NOTE 2   The size of copper and copper alloy tubes is designated by reference to the outside diameter in millimetres.
NOTE 3   See also annex B.
NOTE 4   Non-gasketed pipe joints are outside the scope of this standard.

Flansche und ihre Verbindungen - Runde Flansche für Rohre, Armaturen, Formstücke und Zubehörteile, nach PN bezeichnet - Teil 3: Flansche aus Kupferlegierungen

Diese Europäische Norm legt Anforderungen fest für runde Flansche aus Kupferlegierungen und glatte Los-flansche aus Stahl kombiniert mit Bunden aus Kupferlegierungen mit den PN-Stufen PN 6 bis PN 40 und den Nennweiten DN 10 bis DN 1 800 der Typen nach Tabelle 1.
Diese Norm legt auch Maße und Toleranzen, Werkstoffe und zugehörige Druck/Temperatur-Zuordnungen, Flanschdichtflächen und deren Oberflächenbeschaffenheit, Reparatur durch Schweißen, Kennzeichnung und
Qualitätssicherung fest und enthält Angaben zu Schrauben und Muttern, Dichtungen, Anwendung, Montage und ungefähre Flanschgewichte.
Die festgelegten Flansche, ausgenommen Integralflansche (Typ 21), werden zur Befestigung an Rohren aus
Kupfer oder Kupferlegierungen nach EN 12449 verwendet.
ANMERKUNG 1   Werden Flansche nach dieser Norm für die Verwendung mit Rohren aus Kupfer oder Kupferlegierungen nach EN 1057 für andere als die in EN 12449 festgelegten Rohrdurchmesser gefordert, so sollte dies zwischen dem Rohr-leitungshersteller und dem Hersteller der Flansche vereinbart werden.
ANMERKUNG 2   Die Größe von Rohren aus Kupfer und Kupferlegierungen wird durch Angabe des Außendurchmessers in Millimeter bezeichnet.
ANMERKUNG 3   Siehe auch Anhang B.
ANMERKUNG 4   Rohrleitungsverbindungen ohne Dichtung liegen nicht im Anwendungsbereich dieser Norm.
Tabelle 1 - Typen von Flanschen und Bunden
Nummer des Flanschtyps   Beschreibung
01   Glatter Flansch aus Kupferlegierung zum Hartlöten oder Schweißen
02   Glatter Losflansch aus Stahl für glatten Bund (Typ 32) aus Kupferlegierung zum Hartlöten oder Schweißen
04   Glatter Losflansch aus Stahl für Vorschweißbund (Typ 34) aus Kupferlegierung zum Schweißen
05   Blindflansch aus Kupferlegierung
05C   Blindflansch aus plattiertem Stahl mit Dichtfläche aus Kupferlegierung
07   Glatter Losflansch aus Stahl für Überschieb-Bund (Typ 37) aus Kupferlegierung zum Weichlöten, Hartlöten oder Schweißen
11   Vorschweißflansch aus Kupferlegierung zum Schweißen
12   Überschiebflansch mit Ansatz

Brides et leurs assemblages - Brides circulaires pour tubes, appareils de robinetterie, raccords et accessoires, désignées PN - Partie 3: Brides en alliages de cuivre

La présente norme européenne spécifie les prescriptions des brides circulaires en alliages de cuivre et des collets en alliage de cuivre combinés avec des brides plates tournantes en acier pour les désignations PN de PN 6 à PN 40 et pour les diamètres nominaux de DN 10 à DN 1800 pour les types de brides et de collets présentés au Tableau 1.
La présente norme spécifie aussi les dimensions et tolérances, les matériaux associés à leurs relations pression/température (p/T), les portées de joints et leur état de surface, les réparations par soudage et le marquage, avec les informations sur la boulonnerie, les joints, leur application et installation ainsi que  les masses approximatives des brides.
Les brides spécifiées, à l'exception des brides incorporées (type 21), sont à monter sur des tubes en cuivre ou en alliage de cuivre conformément à l'EN 12449.
NOTE 1   Lorsque les brides spécifiées dans cette présente norme sont prescrites pour l'utilisation  avec des tubes en cuivre ou en alliage de cuivre selon l'EN 1057, lesquels ont des diamètres différents de l'EN 12449, il convient qu'un accord entre le fabricant d'équipement et le fabricant de brides soit établi.
NOTE 2   Les dimensions des tubes de cuivre ou d'alliage de cuivre sont désignées par le diamètre extérieur en millimètres.
NOTE 3   Voir aussi Annexe B.
NOTE 4   Les raccordements sans joint de tuyauteries sont en dehors du domaine d'application de la présente norme

Prirobnice in prirobnični spoji - Okrogle prirobnice za cevi, ventile, fitinge in pribor z oznako PN - 3. del: Prirobnice iz bakrovih zlitin

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Status
Published
Publication Date
16-Sep-2003
Current Stage
9092 - Decision on results of review/2YR ENQ - revise - Review Enquiry
Completion Date
08-Jun-2020

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 3: Copper alloy flangesBrides et leurs assemblages - Brides circulaires pour tubes, appareils de robinetterie, raccords et accessoires, désignées PN - Partie 3: Brides en alliages de cuivreFlansche und ihre Verbindungen - Runde Flansche für Rohre, Armaturen, Formstücke und Zubehörteile, nach PN bezeichnet - Teil 3: Flansche aus KupferlegierungenTa slovenski standard je istoveten z:EN 1092-3:2003SIST EN 1092-3:2004en23.040.60ICS:SLOVENSKI

STANDARDSIST EN 1092-3:200401-junij-2004

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1092-3September 2003ICS 23.040.60English versionFlanges and their joints - Circular flanges for pipes, valves,fittings and accessories, PN designated - Part 3: Copper alloyflangesBrides et leurs assemblages - Brides circulaires pour tubes,appareils de robinetterie, raccords et accessoires,désignées PN - Partie 3: Brides en alliages de cuivreFlansche und ihre Verbindungen - Runde Flansche fürRohre, Armaturen, Formstücke und Zubehörteile, nach PNbezeichnet - Teil 3: Flansche aus KupferlegierungenThis European Standard was approved by CEN on 27 June 2003.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,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36

B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1092-3:2003 E

EN 1092-3:2003 (E)2ContentsPageForeword......................................................................................................................................................................3Introduction.................................................................................................................................................................31Scope..............................................................................................................................................................42Normative references....................................................................................................................................63Terms and definitions....................................................................................................................................64Designation.....................................................................................................................................................74.1General............................................................................................................................................................74.2Standard designation....................................................................................................................................74.3Information to be supplied by the equipment manufacturer.....................................................................75General requirements....................................................................................................................................85.1Materials..........................................................................................................................................................85.2Repairs............................................................................................................................................................85.3Bolting.............................................................................................................................................................85.4Gaskets...........................................................................................................................................................85.5Pressure/temperature (p/T) ratings..............................................................................................................85.6Dimensions.....................................................................................................................................................95.7Flange facings................................................................................................................................................95.8Spot facing or back facing..........................................................................................................................105.9Tolerances....................................................................................................................................................115.10Marking.........................................................................................................................................................11Annex A (informative)

Information to be supplied by the equipment manufacturer..........................................28Annex B (informative)

Application and installation...............................................................................................29Annex C (informative)

Approximate masses of flanges and collars....................................................................30Annex ZA (informative)

Relationship between this European Standard and the Essential Requirementsof EU Directive 97/23/EC.............................................................................................................................34Bibliography..............................................................................................................................................................35

EN 1092-3:2003 (E)3ForewordThis document (EN 1092-3:2003) has been prepared by Technical Committee CEN/TC 74 "Flanges and theirjoints" 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 orby endorsement, at the latest by March 2004, and conflicting national standards shall be withdrawn at the latest byMarch 2004.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 the Pressure Equipment Directive (PED)1).For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this standard.EN 1092 consists of the following parts: Part 1: Steel flanges; Part 2: Cast iron flanges; Part 3: Copper alloy flanges; Part 4: Aluminium alloy flanges.The annexes A, B, C and ZA are informative.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, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and the United Kingdom.IntroductionThis standard is related to ISO 7005-3 in respect of flanges having the same PN. The types of flanges and theirmating dimensions are identical with those flanges of the same DN and PN given in ISO 7005-3, except that certainflange types in accordance with this standard may regularly be supplied with raised face facings.The mating dimensions of the flanges of this standard are compatible with PN designated flanges of other materialsin accordance with the other parts of EN 1092.

1)Directive 97/23 EC of the European Parliament and of the Council of 29 May 1997 on the approximation of the Laws of theMember States concerning pressure equipment; OIEC L 181.

EN 1092-3:2003 (E)41 ScopeThis European Standard specifies requirements for circular copper alloy flanges and copper alloy collars combined withloose steel plate flanges in PN designations from PN 6 to PN 40 and nominal sizes from DN 10 to DN 1800 in the typesshown in Table 1.This standard also specifies dimensions and tolerances, materials and their associated pressure/temperature (p/T)ratings, flange facings and related surface finish, weld repairs, and marking, together with information on bolting,gaskets, application/installation and approximate flange masses.The flanges specified, with the exception of integral (type 21) flanges, are for attachment to copper or copper alloytubes in accordance with EN 12449.NOTE 1When the flanges specified in this standard are required for use with copper or copper alloy tubes to EN 1057 in thosetube diameters which are different to EN 12449, this should be agreed between the equipment manufacturer and the flangemanufacturer.NOTE 2The size of copper and copper alloy tubes is designated by reference to the outside diameter in millimetres.NOTE 3See also annex B.NOTE 4Non-gasketed pipe joints are outside the scope of this standard.Table 1 — Types of flanges and collarsTypeno.Description01Plate flange in copper alloy for brazing or welding02Loose plate flange in steel with a plate collar (type 32) in copper alloy, for brazing or welding.04Loose plate flange in steel with a weld-neck collar (type 34) in copper alloy, for welding.05Blank flange in copper alloy.05CBlank flange in steel clad with a copper alloy jointing face.07Loose plate flange in steel with a slip-on collar (type 37) in copper alloy, for soft soldering, brazingor welding.11Weld-neck flange in copper alloy for welding.12Hubbed slip-on flange in copper alloy, for soft soldering, brazing or welding.14Hubbed slip-on flange in copper alloy supplied with tube stops, for soft soldering, brazing orwelding.21Integral flange in copper alloy as part of some other equipment or component32Plate collar in copper alloy34Weld-neck collar in copper alloy.37Slip-on collar in copper alloy.

EN 1092-3:2003 (E)5Copper alloy componentSteel componentType 01Plate flange in copper alloyfor brazing or weldingType 02, 32Loose plate flange in steel with aplate collar (type 32) in copper alloyfor brazing and weldingType 04, 34Loose plate flange in steel with aweld-neck collar(type 34) in copperalloy for weldingType 05, 05C05 Blank flange in copper alloy05C Blank flange in steel clad witha copper alloy jointing faceType 07, 37Loose plate flange in steel with aslip-on collar (type 37) in copperalloy, for soft soldering, brazing orweldingType 11Weld-neck flange in copper alloy forweldingType 12Hubbed slip- on flange in copperalloy, for soft soldering, brazing orweldingType 14Hubbed slip-on flange in copperalloy supplied with tube stops, forsoft soldering, brazing or weldingType 21Integral flange in copper alloy aspart of some other equipment orcomponentFigure 1 — Types of flanges and collars

EN 1092-3:2003 (E)62 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 1333:1996, Pipework components — Definition and selection of PN.EN 1652, Copper and copper alloys — Plate, sheet, strip and circles for general purposes.EN 1982, Copper and copper alloys — Ingots and castings.EN 10028-2, Flat products made of steels for pressure purposes — Part 2: Non-alloy and alloy steels with specifiedelevated temperature properties.EN 10222-2, Steel forgings for pressure purposes — Part 2: Ferritic and martensitic steels with specified elevatedtemperature properties.EN 12420, Copper and copper alloys — Forgings.EN 12449, Copper and copper alloys — Seamless round tubes for general purposes.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, definitionsand surface texture parameters (ISO 4287:1997).EN ISO 6708:1995, Pipework components — Definition and selection of DN (nominal size) (ISO 6708:1995).3 Terms and definitionsFor the purposes of this standard, the following terms and definitions apply.3.1DNsee EN ISO 6708:19953.2PNsee EN 1333:19963.3maximum allowable pressure, PSmeans the maximum allowable pressure for which the equipment is designed, as specified by the equipmentmanufacturer3.4maximum allowable temperature, TSmeans the maximum allowable temperature for which the equipment is designed, as specified by the equipmentmanufacturer

EN 1092-3:2003 (E)74 Designation4.1 GeneralThe types of flanges and their reference numbers are given in Table 1 and the range of DN applicable to each flangetype and to each PN shall be as given in Table 3.4.2 Standard designationFlanges and collars in accordance with this standard shall be designated by the following:a) Designation, e.g. flange or collar;b) Number of this standard, EN 1092-3;c) Number of flange type in accordance with Figure 1;d) Type of flange facing, A or B in accordance with Figure 1 (only for types 11, 12, 14 and 21);e) PN designation, PN....;f) Nominal size, DN....;g) Bore diameter B1 (only for flanges which can be made to suit more than one tube diameter — see Tables 5to 9);h) Material number or symbol (see Tables 11 and 12) (for type 05C flanges it is necessary to specify both thematerial of the flange and the material of the cladding).EXAMPLE 1Designation of a plate flange type 01 with facing type A, in PN 6 and nominal size DN 800 and in materialsymbol CuAl8Fe3:Flange EN 1092-3/01A/PN 6/DN 800/CW303GEXAMPLE 2Designation of a loose flange type 07, in PN 10 and nominal size DN 50 and in material symbol S235JR:Flange EN 1092-3/07/PN 10/DN 50/S235JREXAMPLE 3Designation of slip-on collar type 37, in PN 10 and nominal size DN 50 with bore diameter B1 = 57,23 and inmaterial symbol CuZn20Al2As:Collar EN 1092-3/37/PN 10/DN 50/57,23/CW702REXAMPLE 4Designation of a blank flange type 05C with clad jointing face, in PN 25 and nominal size DN 150 and inmaterials symbols S235JR (for blank flange) and CuNi30Mn1Fe (for cladding):Flange EN 1092-3/05C/PN 25/DN 150/S235JR-CW354HEXAMPLE 5Designation of a weld-neck flange type 11 with facing type B, in PN 16 and nominal size DN 100 and inmaterial symbol CuAl10Fe2-C:Flange EN 1092-3/11B/PN 16/DN 100/CC331G4.3 Information to be supplied by the equipment manufacturerFor information to be supplied by the equipment manufacturer see annex A.

EN 1092-3:2003 (E)85 General requirements5.1 MaterialsFlanges and collars shall be manufactured from the materials specified in Tables 11 and 12 except for type 21 flangeswhere the flange manufacturer may use other materials by agreement with the equipment manufacturer.The flange manufacturer shall provide means of identifying the material of the flange. An equipment manufacturermay require a certificate in accordance with EN 10204 which is suitable for the category of the equipment to whichthe flange is fitted.NOTEIf a protective coating such as zinc coating or zinc painting is required on steel components, the equipment manufacturershould state this on the enquiry and/or order.5.2 Repairs5.2.1Repairs by welding are permitted when there is a proven method and where not otherwise prohibited by theapplicable material standard.

All welding shall be carried out in accordance with a written procedure.NOTEFor approval of welding procedures, see EN 288-1. For approval of welders, see EN 287-1.5.2.2Any filler rod used for weld repairs shall be such as to produce a weld having characteristics at least equal tothe parent metal. Flanges shall be heat treated after repair welding when the material standard requires suchtreatment.5.3 BoltingFlanges shall be suitable for use with the nominal size and number of bolts specified in Tables 5 to 9 as appropriate.The bolting material shall be chosen by the equipment manufacturer according to the pressure, temperature, flangematerial and the selected gasket so that the flanged joint remains tight under the expected operating conditions.NOTE 1For information on bolting, see EN 1515-1 and EN 1515-2 and annex B.NOTE 2For flange types 01, 05, 11, 12, 14 and 21, where copper alloy bolting is used, the recommended bolting materialsare EN 12420 Alloy Nos. CW306G or CW307G for temperatures up to and including 120 °C.For flange types 02, 04, 05C and 07, steel bolting should be used and reference should be made to EN 1515.5.4 GasketsThe various gasket types, dimensions, design characteristics and materials used are not within the scope of thisstandard. Dimensions of gaskets are given in the relevant parts of EN 1514.5.5 Pressure/temperature (p/T) ratings5.5.1 GeneralThe p/T ratings of the flanges manufactured from the materials specified in Tables 11 and 12 are given in Tables 13and 14.The p/T ratings indicate the relationship between the maximum allowable pressure, PS and the maximum allowabletemperature, TS.Linear interpolation is permitted for intermediate temperatures.NOTE 1See EN 764 for terminology.

EN 1092-3:2003 (E)9NOTE 2When type 21 flanges are supplied as part of another component (for example, a valve or pump) in a material otherthan those listed in Table 11, reference should be made to the relevant product or application standard for the appropriatep/T ratings.NOTE 3The rating of a flange is not necessarily the rating of the whole pipework system. Gasket materials can also imposelimitation of the p/T rating of a flanged joint and the gasket manufacturer should be consulted when selecting the material of thegasket.5.5.2 p/T ratings of flanged jointsWhen two flanges in a flanged joint do not have the same p/T rating at any temperature, then the lower of the twoflange p/T ratings at that temperature shall apply.NOTE 1For any p/T rating, the temperature shown is considered to be the same as that of the contained fluid. Use at apressure corresponding to a temperature other than that of the contained fluid is the responsibility of the user.NOTE 2Application of the p/T ratings given in this standard to flange joints should take into consideration the risks ofleakage due to forces and moments developed in the connecting pipework, see annex B.NOTE 3These notes on service considerations are not intended to be exhaustive.5.6 Dimensions5.6.1 FlangesDimensions of flanges shall be in accordance with Figure 2 and the following tables and figures as appropriate: PN

6 flanges: Table 5 and Figure 3; PN 10 flanges: Table 6 and Figure 4; PN 16 flanges: Table 7 and Figure 5; PN 25 flanges: Table 8 and Figure 6; PN 40 flanges: Table 9 and Figure 7.NOTE 1The bore sizes of type 21 flanges are usually equal to the nominal size of the pipe, valve or fitting of which they forma part and the actual bore sizes are usually given in the appropriate standard(s) for the pipe, valve or fitting.NOTE 2When type 07, 12 and 14 flanges are for use with soft soldering techniques only, then reference should be made toEN 1254-1 for socket depths.NOTE 3For types 34 and 11 flanges the recommended weld preparation angle is 37,5° ± 2,5° when butt welding to pipe withthickness of 3 mm and greater.5.6.2 Bolt holesBolt holes shall be equally spaced on the pitch circle diameter. In the case of type 21 flanges, the bolt holes shall bepositioned such that they are symmetrical to the principle axes and such that no holes fall on these axes, i.e. positioned"off-centre", see Figures 3 to 7.5.7 Flange facings5.7.1 Types of facingsFigure 2 illustrates facing types (types A and B) which are used, where applicable, in conjunction with the flangesshown in Figure 1. Diameters of type B raised faces are given in Table 4.Types 01 and 05 flanges in copper alloy shall be provided with type A flat face. Types 11, 12, 14 and 21 flanges incopper alloy shall be provided with either type A flat face or type B raised face.NOTE 1Flanges with type A facings are suitable for bolting to flat face mating flanges using a full face gasket. Flanges withtype B facings are suitable for bolting to raised face mating flanges and/or used with inside bolt circle gaskets.

EN 1092-3:2003 (E)10NOTE 2For types 11, 12, 14 and 21 flanges, the equipment manufacturer's enquiry or order should advise the flangemanufacturer of the facing type required, see annex A.NOTE 3For certain large size flanges in types 11, 12 and 14 and PN 6 to PN 25 (see Tables 5 to 8), type B facings only arespecified. The provision of type A facings on these flanges would be by agreement between the flange manufacturer andequipment manufacturer.Types 02, 04, 05C and 07 flanges have a raised face formed by the face of the collar or the cladding, for bolting to raised facemating flanges using an inside bolt circle gasket.NOTE 4The bolting of these flanges to a flat face iron or steel mating flange using full face or inside bolt circle gaskets is notprecluded.5.7.2 Jointing face finishAll flange jointing faces shall be machine finished and when compared by visual or tactile means with referencespecimens, shall be in accordance with Table 2.NOTE 1It is not intended that instrument measurements are taken on the flange faces, and the Ra and Rz values as definedin ISO 468 relate to the reference specimens.NOTE 2Other finishes may be agreed between the flange manufacturer and equipment manufacturer.Table 2 — Surface finish of jointing facesRaamRzamMethod ofmachiningmin.max.min.max.Turningb3,212,512,550maRa and Rz are defined in EN ISO 4287bTurning covers any method of machining operation producing either serrated concentric or serrated spiralgrooves.Machining processes other than turning are permissible provided that they give a surface finish inaccordance with the Ra and Rz values specified.5.7.3 RimsRims of flanges and collars may be machined or un-machined.5.7.4 Collars and loose flangesCollars and loose flanges shall be machine finished, or have a surface equivalent to that obtained by machining on alllocating diameters, bores and abutment faces. The abutment faces shall be flat and square to the bore axis.5.8 Spot facing or back facingAny spot facing or back facing required shall not reduce the flange thickness to less than the minimum specified.When spot facing is used, the diameter shall be large enough to accommodate the outside diameter of the equivalentnormal series of washers in accordance with EN ISO 887 for the bolt size being fitted.When a flange is back faced, it is permissible for the fillet radius to be reduced but it shall not be eliminated entirely.The bearing surfaces for the bolting shall be parallel to the flange jointing face within the limits given in Table 10.

EN 1092-3:2003 (E)115.9 TolerancesTolerances on dimensions shall be as specified in Table 10.5.10 Marking5.10.1 Other than type 21 flangesAll flanges and collars shall be marked as follows:a) Number of this standard, i.e. EN 1092-3;b) Flange or collar type number, e.g. 05;c) PN designation, e.g. PN 10;d) DN (Nominal size), e.g. DN 100. Where a flange or collar can be made to suit more than one tube size, thetube size shall be marked as appropriate (see Tables 5 to 9);e) Material designation. The alloy designation number given in Tables 11 and 12 shall be used, as appropriate;f) Flange manufacturer’s name or trademark.EXAMPLE 1Copper alloy flanges:EN 1092-3 - 12 — PN 16 — DN 300 — CW352H — XYZEXAMPLE 2Copper alloy collars: EN 1092-3 — 32 — PN 16 — DN 50/54 — CC491K — XYZEXAMPLE 3Steel components: EN 1092-3 — 02 — PN 16 — DN 300 — S235JR – XYZ5.10.2 Method of markingsCopper alloy flanges shall be clearly and permanently marked by a method other than stamping with steel stamps.NOTE 1The flange manufacturer's name or trademark, together with other relevant markings may be produced duringcasting or forging for both copper alloy and steel components.NOTE 2Steel flanges may be marked round the rim of the flange with round nosed steel stamps.5.10.3 Omission of markingsIf a flange is too small to enable all the markings required in 5.10.1 to be marked on the flange, then some of themarkings are permitted to be omitted. The order in which the markings are omitted shall be as follows:a) Flange type number;b) DN.5.10.4 Declaration of complianceThe marking EN 1092-3, together with the flange manufacturer’s name or trademark on or in relation to a product,represents a manufacturer's declaration of compliance, i.e. a claim by or on behalf of the manufacturer that the productmeets the requirements of this standard.

EN 1092-3:2003 (E)12Table 3 — Synoptic table for flangesSizeTypeNo.Table no.PNDN 10DN 15DN 20DN 25DN 32DN 40DN 50DN 65DN 80DN 100DN 125DN 150DN 175DN 200DN 250DN 300DN 350DN 400DN 450DN 500DN 600DN 700DN 800DN 900DN 1000DN 1200DN 1400DN 1600DN 180056––––––––––610––––––01716––––––––––––––825–––––––––––0232940––––––––––––56––––––610–––716–––––––––––0434825––––––––––––––56610–––716––––––––––––825–––––––––––05

05C940––––––––––––566100737716––––––––––––––56–––––––––610––––––716––––––––––––––11825––––––––––––––56–––––––––610––––––716––––––––––––––12825––––––––––––––56–––––––––610––––––716––––––––––––––14825––––––––––––––56610716––––––––––825––––––––––21940–––––––––––––––––––NoteThe range of DN of which a flange of a particular

type and PN may be ordered to this standard is denoted by

EN 1092-3:2003 (E)13Type A Flat faceType B Raised faceNOTE 1For application, see 5.7.1.NOTE 2For dimensions of type B facings, see Table 4.Figure 2 — Flange facings, types A and BTable 4 — Dimensions for type B flange facingsDimensions in millimetresPN 6PN 10PN 16PN 25PN 40DNd1f1d1f1d1f1d1f1d1f1

332
412
412
412
412
382
462
462
462
462
482
562
562
562
562
582
652
652
652
652
692
762
762
762
762
782
842
842
842
842
882
992
992
992
992
1082
1182118211821182
1242
1322132213221322
100
1442
1562156215621562
125
1742
1842184218421842
150
1992
2112211221122112
175
2292
24222422––––
200
2542
2662266227422842
250
3092
3192319233023452
300
3632
3702370238924092
350
4132
4292429244824652
400
4632
4802480250325352
450
5182
5302––––––
500
5682
582260926092––
600
6672
6822––––––
700
7725
7945––––––
800
8785
9015––––––
900

97851 0015––––––1 0001 07851 1125––––––1 2001 29551 3285––––––1 4001 51051 5305––––––1 6001 71051 7505––––––1 8001 91851 9505––––––

EN 1092-3:2003 (E)14Additional dimensionsfor type 34 collarsDimensions in millimetresDNh5r100 or less153125 to 250155300 to 350165400 to 450167500 to 600207700 to 800247This diagram illustrates thearrangement, but not necessarilythe correct number of bolt holes.Refer to column "Number of bolts"in Table 5 for the actual number.Detail YDetail Z900 to 1 200327Type 01Type 04, 34Type 05, 05CCopper alloySteelType 07, 37Type 11Type 12Type 14Type 21NOTE 1For type 12 and 14 flanges, all nominal sizes,

= 4° max.NOTE 2Dimension N3 is measured at the intersection of the projections of the hub draft angle and the back face of the flange.Figure 3 — Dimensions of PN 6 flanges (see Table 5)

EN 1092-3:2003 (E)15Table 5 — Dimensions of PN 6 flanges (see Figure 3)Dimensions in millimetresMating dimensionsFlange thicknessBoltsDNTube outside diameterOutside diameterof flangePitch circlediameterBolt hole diameterNumberNom. sizeType A facingLoose and blankflangesType B facingHub diameterNeck diameter(min.)CollardiameterLength throughhubof collarCollarthicknessCollarflangethicknessCladding thicknessCollar or claddingdiameterBore offlange orcollarBoreofflangeChamfer

aFlange types01111112121401, 04, 05, 05C07, 11, 12, 14, 21142104050705C211112142134371112143437113434343705C3405C370137121404070407ADKLC1C2C3N3N1H1H2S1minS2FD1B1B2E a101516,07550114. M1061010211618,021281035161,02,0553315,0716,0719232151820,08055114. M1061010262122,026301035161,02,0553818,0720,0824282202225,09065114 .M1061010312827,031321040161,52,5554822,0825,0828333252830,010075114. M1081210363532,036351240181,52,5555828,0830,0833383323538,012090144. M1281210454240,045351240181,52,5556935,0938,0841473404244,5130100144. M1291212515246,551381345191,52,5557842,0944,6048533505457,0140110144. M12111214676459,067381545191,52,5658854,0957,2362693656776,1160130144. M12131216877978,087381745192,03,56510867,2376,33818938088,9190150184. M161314161049491,0104421750212,54,06512489,13941063100108,0210170184. M16161418123116110123452050212,54,065144108,381131253125133,0240200188. M1618201418148155135148482250212,54,065174133,631381514150159,0265225188. M1618201420175180161175482450212,54,085199159,631641784175193,7295255188. M1620221820210209196210522650233,04,585229194,632002135200219,1320280188. M1620221820235234221235552850233,04,585254220,0322523852502672733753351812. M1622242022285286269275285291603050273,04,585309268,13274,13278/284288/29657300323,94403952212. M2022242426342336326342623050304,05,5105363325,033303457350368,04904452212. M2022262626386390370386623050324,05,5105413369,133743697400419,05404952216. M2022283026439442421439653050364,05,5105463420,134264427450457,25955502216. M2024303228477492459477683250384,05,5105518458,334654807500508,06456002220. M20

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