1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58PN-designated flanges Part 6: Covered serrated metal gaskets for use with steel flangesThe European
2、 Standard EN 1514-6:2003 has the status of a British StandardICS 23.040.80Flanges and their joints Dimensions of gaskets for BRITISH STANDARDBS EN 1514-6:2003BS EN 1514-6:2003This British Standard, was published under the authority of the Standards Policy and Strategy Committee on 22 December 2003 B
3、SI 22 December 2003ISBN 0 580 43134 7Cross-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” facilit
4、y 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.Sum
5、mary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 13 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsA list of organization
6、s represented on this committee can be obtained on request to its secretary.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.National forewordThis British Standard is th
7、e official English language version of EN 1514-6:2003.The UK participation in its preparation was entrusted to Technical Committee PSE/2, Jointing materials and compounds, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committ
8、ee any EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1514-6December 2003ICS 23.040.80English versionFlanges and their joints - Dimensions of gaskets for PN-designated flanges - Part 6: Covered serrated metal gaskets foruse with steel flangesBrides et leurs assemblages - Dimensions des joints pou
9、rles brides dsignes PN - Partie 6: Joints mtalliques strisrevtus pour utilisation avec des brides en acierFlansche und ihre Verbindungen - Mae fr Dichtungen frFlansche mit PN-Bezeichnung - Teil 6:Kammprofildichtungen fr StahlflanscheThis European Standard was approved by CEN on 3 November 2003.CEN m
10、embers 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 applicat
11、ion 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 s
12、tatus 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.EUROPE
13、AN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2003 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1514-6:2003 EEN 1514-6:2003 (E)2C
14、ontents pageForeword31 Scope 42 Normative references 43 Terms and definitions44 Designations.54.1 Range of PN designations 54.2 Range of DN (nominal sizes) 54.3 Gasket types.54.4 Information to be supplied by the purchaser55 Constructional details .55.1 General details .55.2 Core .65.2.1 Core materi
15、als 65.2.2 Core welding.65.2.3 Dressing of core welds65.2.4 Core flatness 65.3 Serrations .65.4 Location rings 65.4.1 Integral ring 65.4.2 Loose ring.65.5 Facing materials.65.6 Facing weight per unit area 75.7 Attachment of facing .75.7.1 Methods of attachment75.7.2 De-greasing of core .75.7.3 Numbe
16、r of joins75.7.4 Excessive facing 75.8 Integrity of facing attachment.75.9 Typical construction details .86 Dimensions.107 Marking .118 Colour coding.119 Packaging .11Annex A (informative) Information to be supplied by the purchaser.13EN 1514-6:2003 (E)3ForewordThis document (EN 1514-6:2003) has bee
17、n 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 June 2004, and conflicting national st
18、andards shall be withdrawn at the latest byJune 2004.The annex A is informative and contains “Information to be supplied by the purchaser“.EN 1514 consists of 6 parts:Part 1: Non-metallic flat gaskets with or without insertsPart 2: Spiral wound gaskets for use with steel flangesPart 3: Non-metallic
19、PTFE envelope gasketsPart 4: Corrugated, flat or grooved metallic and filled metallic gaskets for use with steel flangesPart 6: Covered serrated metal gaskets for use with steel flangesPart 7: Covered metal jacketed gaskets for use with steel flangesPart 8: Polymeric O-Ring gaskets for grooved flang
20、esAccording 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, Netherla
21、nds, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and the United Kingdom.EN 1514-6:2003 (E)41 ScopeThis European Standard specifies the construction, dimensions and marking of covered serrated metal gaskets foruse with flanges complying with EN 1092-1 for PN 10, PN 16, PN 25, PN 40, PN 63 a
22、nd PN 100 up to andincluding DN 3000.This document does not extend to covered serrated metal based heat exchanger gaskets with pass bars or largevessel gaskets but, in the lack of a dedicated document for such gaskets, the principles set down can be applied tothem.NOTE 1 Dimensions of other types of
23、 gaskets for use with flanges to EN 1092-1, EN 1092-2, EN 1092-3 and EN 1092-4 aregiven in EN 1514-1, EN 1514-2, EN 1514-3, EN 1514-4, prEN 1514-7 and prEN 1514-8.NOTE 2 Annex A lists information that should be supplied by the purchaser when ordering gaskets in circumstances wherethe choice of the g
24、asket materials appropriate to the service is left to the supplier.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 h
25、ereafter. 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 1092-1, Fl
26、anges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated Part 1: Steel flanges.EN 1092-2, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated Part 2: Cast iron flanges.EN 1092-3:2003, Flanges and their joints
27、Circular flanges for pipes, valves, fittings and accessories,PN designated Part 3: Copper alloy flanges.EN 1092-4, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated Part 4: Aluminium alloy flanges.EN 1333, Pipework components Definition and selectio
28、n of PN.EN ISO 6708:1995, Pipework components Definition and selection of DN (nominal size) (ISO 6708:1995).3 Terms and definitionsFor the purposes of this European Standard, the terms and definitions given in EN 1092-3:2003,EN ISO 6708:1995 and the following apply.3.1covered serrated metal gasketco
29、nsists of a sealing element with or without a location ring which may or may not be rigidly fixed to the sealingelement. The sealing element consists of a metal core with serrated top and lower surfaces and a conformablesealing material adhered to each serrated surface. The serrations into metal cor
30、e have the function of creatingregions of high surface pressure on the conformable sealing material to ensure the required level of tightness inservice. The density of the sealing material in the serrations during service should also be high enough to ensurethat secondary sealing is provided by the
31、impermeable nature of the material between the tips of the serrations. Inservice the thickness of the sealing material over the serrations is minimal, often about 0,1 mm. The widths of thetips of the serrations should also be of the order of 0,1 mmEN 1514-6:2003 (E)53.2DNsee EN ISO 67083.3PNsee EN 1
32、3334 Designations4.1 Range of PN designationsGaskets shall be designated as suitable for use with one or more of the following PN designations of flange:PN 10 PN 40 PN 250PN 16 PN 63 PN 320PN 25 PN 100 PN 400NOTE There are no standards in the EN 1092 series that cover PN 160, PN 250, PN 320 or PN 40
33、0 flanges but there arenational standards covering these.4.2 Range of DN (nominal sizes)Gasket nominal sizes shall be designated in accordance with the ranges specified in Table 1.The general principles described in this standard shall also be applied to gaskets outside of the range specified inTabl
34、e 1 by agreement between supplier and customer.4.3 Gasket typesGasket types, as illustrated in Figure 1, shall be designated as:Type NR: Sealing element without any location ringType IR: Sealing element with integral location ring.Type LR: Sealing element with loose location ring.Types NR is used on
35、ly with spigot faced or tongue and groove faced flanges4.4 Information to be supplied by the purchaserThe selection of gasket materials and type should take into account the fluid, the operating conditions and theproperties of the gasket materials as well as the type of flange. It is recommended tha
36、t selection of a gasket for anyparticular application is made in consultation with the gasket supplier who will advise on the materials required for aparticular service (see annex A).5 Constructional details5.1 General detailsFigure 1 gives illustrations of the cores and, where used, the location ri
37、ngs of the three types of covered serratedmetal gasket listed in 4.3.EN 1514-6:2003 (E)6Figure 2 shows a typical covered serrated metal gasket for use with type A and type B flanges, the Type A and Bflange facings are specified in EN 1092-1, EN 1092-2, EN 1092-3 and EN 1092-4.5.2 Core5.2.1 Core mate
38、rialsThe material of the core shall be selected to be compatible with the intended service. The core thickness,measured over the tips of the serrations, shall be a minimum of three times the depth of the serrations.5.2.2 Core weldingIf the core is of a welded construction then the method of welding
39、shall be such as to ensure that the weld isthroughout the full thickness of the core. The number of welds shall not be more than two.5.2.3 Dressing of core weldsThe welds shall be dressed to preserve the number and depth of the serrations of the rest of the core.5.2.4 Core flatnessThe out of flatnes
40、s of the serrated core shall not be more than 3 mm for every 300 mm of outside diameter.5.3 SerrationsThe serration depth shall be a minimum of 0,4 mm. The pitch of the serration and the width of the serration shall bearranged so that the width of the tips is 0,1 mm. The first and last tips of the s
41、errated core shall be as near aspossible to the respective edges of the core.Proprietary forms of serrations and core profiles may be used by agreement between the purchaser andmanufacturer.To minimise the possibility of vibration induced cracking of the core, the radius at the bottom of the grooves
42、 shall beas large as possible.5.4 Location rings5.4.1 Integral ringThe thickness of the integral ring shall be a minimum of 0,5 mm. The location ring shall be undercut on at least oneside to protect the sealing element in the event of thermal expansion induced interference between the location ringa
43、nd the bolts of the flange.5.4.2 Loose ringThe thickness of the location ring shall be a minimum of 0,5 mm. When installed the ring shall be sufficiently loosein the location slot in the core so that thermal expansion effects never cause the ring to become tight in the locationslot. The location rin
44、g may be made in sections and assembled around the core. The sections of the assembledring shall be either welded together or otherwise securely held together. The material of the loose location ring maybe carbon steel.5.5 Facing materialsThe facing material shall be selected to be suitable for the
45、intended service and the material of the flanges.Suitable materials range from very soft, rubber bound, sheet material to metal foils.The facing material may be cut from sheet to the appropriate size, applied in the form of texturised tape or by anyother means that meets the other requirements of th
46、is standard.EN 1514-6:2003 (E)75.6 Facing weight per unit areaThe weight per unit area of facing in order to create the required level of tightness in service is a function of thethickness and density of the facing material, the depth, width and pitch of the serrations, the required in servicedensit
47、y of the facing material and the thickness of facing required above the core in service. The weight per unitarea shall be such that metal to metal contact between the tips of the serrations and the flange surface is avoided.For guidance, a satisfactory level of sealing is routinely achieved with gra
48、phite of 0,5 mm thickness and a density of1,0 gm/cm3as received when used with a core where the serrations are 0,4 mm in depth and the serration tip widthis 0,1 mm.Ignoring the effects of the thickness of any adhesive and the grooving of the flange surfaces, the target weight perunit area of facing
49、can be estimated from the following:Weight per unit area = rs t + ( AG/ P)Where rsis the required density of the facing in servicet is the required thickness in service of facing above the coreAGis the cross sectional area, perpendicular to the plane of the core, of the serrationsP is the pitch of the serrations5.7 Attachment of facing5.7.1 Methods of attachmentThe facing may be attached to the core by any means that satisfies the requirement of 5.8 provided that theattachment method does not result in the intro
