1、BRITISH STANDARD BS EN 12560-3:2001 Flanges and their joints Gaskets for Class-designated flanges Part 3: Non-metallic PTFE envelope gaskets The European Standard EN 12560-3:2001 has the status of a British Standard ICS 23.040.80 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW
2、BS EN 12560-3:2001 This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 March 2001 BSI 03-2001 ISBN 0 580 37048 8 National foreword This British Standard is the of
3、ficial English language version of EN 12560-3:2001. The UK participation in its preparation was entrusted to Technical Committee PSE/2, Jointing material and compounds, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary.
4、 Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Elec
5、tronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to unders
6、tand the text; present to the responsible 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 pages This document comprises a front cover
7、, an inside front cover, the EN title page, pages 2 to 11 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12560-3 January 20
8、01 ICS 23.040.80 English version Flanges and their joints Gaskets for Class-designated flanges Part 3: Non-metallic PTFE envelope gaskets Brides et leurs assemblages Joints pour les brides dsignes Class Partie 3: Joints non mtalliques enveloppe PTFE Flansche und ihre Verbindungen Dichtungen fr Flans
9、che mit Class-Bezeichnung Teil 3: Nichtmetallische Weichstoffdichtungen mit PTFE-Mantel This European Standard was approved by CEN on 28 December 2000. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the statu
10、s 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 Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A vers
11、ion in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France
12、, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CEN A
13、ll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12560-3:2001 EPage 2 EN 12560-3:2001 BSI 03-2001 Contents Page Foreword 3 Introduction . 4 1 Scope 5 2 Normative references. 5 3 Terms and definitions 5 3.1 DN 5 3.2 NPS 5 3.3 Class . 5 4
14、Designations. 6 4.1 Range of Class designations . 6 4.2 Range of gasket sizes . 6 4.3 Gasket design 6 4.4 Information to be supplied by the purchaser . 6 5 Gasket designs. 6 6 Gasket type. 8 7 Dimensions and tolerances . 8 7.1 Dimensions 8 7.2 Tolerances 9 8 Marking . 9 Annex A (informative) A-devia
15、tions. 10Page 3 EN 12560-3:2001 BSI 03-2001 Foreword This European Standard has been prepared by Technical Committee CEN/TC 74, Flanges and their joints, 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 iden
16、tical text or by endorsement, at the latest by July 2001, and conflicting national standards shall be withdrawn at the latest by July 2001. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard
17、: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. The annex A is informative and contains “A-deviations”.Page 4 EN 12560-3:2001 BSI 03-2001 Introduction
18、 EN 12560 consists of seven parts: Part 1: Non-metallic flat gaskets with or without inserts. Part 2: Spiral wound gaskets for use with steel flanges. Part 3: Non-metallic PTFE envelope gaskets. Part 4: Corrugated, flat or grooved metallic and filled metallic gaskets for use with steel flanges. Part
19、 5: Metallic ring-joint gaskets for use with steel flanges. Part 6: Kammprofile gaskets for use with steel flanges. Part 7: Covered metal jacketed gaskets for use with steel flanges. The terminology and definitions in this standard are in accordance with those given in ISO standards. WARNING: Gasket
20、s made to this standard may contain asbestos. Materials containing asbestos may be subject to legislation that requires precautions to be taken when handling them to ensure that they do not constitute a hazard to health (see annex A). Attention is drawn to relevant EC directives.Page 5 EN 12560-3:20
21、01 BSI 03-2001 1 Scope This European Standard specifies the dimensions and marking of IBC (inside bolt circle) non-metallic PTFE envelope gaskets for use with flanges complying with prEN 1759-1:2000, prEN 1759-3:1994 and prEN 1759-4:1997 for Class 150 and Class 300 for nominal sizes DN 15 and DN 600
22、. NOTE: Dimensions of other types of gaskets for use with flanges complying with prEN 1759-1:2000, prEN 1759-3:1994 and prEN 1759-4:2000 are given in prEN 12560-1:2000, prEN 12560-2:2000, prEN 12560-4:2000, prEN 12560-5:2000, prEN 12560-6:2000 and prEN 12560-7:2000. 2 Normative references This Europ
23、ean Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications
24、apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). prEN 1759-1:2000 Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, Clas
25、s designated Part 1: Steel flanges NPS to NPS 24. prEN 1759-3:1994 Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, Class designated Part 3: Copper alloy flanges. prEN 1759-4:1997 Flanges and their joints Circular flanges for pipes, values, fittings and accessor
26、ies, Class designated Part 4: Aluminium alloy flanges. EN ISO 6708 Pipework components Definition and selection of DN (nominal size) (ISO 6708:1995). 3 Terms and definitions For the purposes of this European Standard the following terms and definitions apply: 3.1 DN see EN ISO 6708 3.2 NPS see prEN
27、1759-3:1994 3.3 Class see prEN 1759-3:1994Page 6 EN 12560-3:2001 BSI 03-2001 4 Designations 4.1 Range of Class designations Gaskets shall be designated as suitable for use with one or both of the following Class designations of flange: Class 150; Class 300. 4.2 Range of gasket sizes Gasket nominal s
28、izes shall be designated in accordance with the ranges specified in Table 1. 4.3 Gasket design Gasket design, as defined in clause 5 and illustrated in Figure 1 shall be designated as: Design A; Design B; Design C. 4.4 Information to be supplied by the purchaser The following information shall be su
29、pplied by the purchaser when ordering gaskets: a) the number and Part of this European Standard, i.e. EN 12560-3; b) gasket design (see 4.3); c) the nominal size (see Table 1); d) Class designation (see Table 1); e) thickness (see NOTE to clause 7); Additional information that should be supplied by
30、the purchaser: f) expected operating conditions for which the gasket will be used. NOTE: Before ordering a gasket it is recommended that the selection of the gasket design should be made in consultation with the gasket supplier. The selection of gasket design and thickness should take account of the
31、 fluid, the operating conditions, the properties of the gasket materials, the type and surface finish of the flange facing and the flange bolt loading. EXAMPLE A gasket according to EN 12560-3, design C, of nomimal size DN 100, Class 150, 2 mm thickness, shall be designated as follows: Gasket EN 125
32、60 3 C DN 100 Class 150 2 mm. 5 Gasket designs Gaskets for which dimensions are specified shall be one of the designs shown in Figure 1. NOTE 1: Gasket inserts are usually manufactured from compressed fibre sheet jointings, including asbestos. Other materials are also used to suit particular applica
33、tions.Page 7 EN 12560-3:2001 BSI 03-2001 WARNING: Gaskets made to this standard may contain asbestos. Materials containing asbestos may be subject to legislation that requires precautions to be taken when handling them to ensure that they do not constitute a hazard to health (see annex A). Attention
34、 is drawn to relevant EC directives. NOTE 2: Each design is applicable only to certain nominal sizes and Class designations and is dependent upon manufacturing constraints. NOTE 3: The selection of the gasket should take into account the fluid, the operating conditions, the properties of the gasket
35、materials, the type and surface finish of the flange facing and the flange bolt loading. It is recommended that selection of gaskets for any particular application is made in consultation with the gasket supplier Key 1 Insert 2 Envelope 3 Gasket, inside diameter 4 Envelop, outside diameter 5 Gasket,
36、 outside diameter Figure 1 Typical designs of non-metallic PTFE envelope gasketsPage 8 EN 12560-3:2001 BSI 03-2001 6 Gasket type Gaskets are IBC (inside bolt circle) type and shall be for use with type A (flat face) or type B (raised face) flange facings. NOTE: Type A and type B flange facings are s
37、hown in prEN 1759-1:2000. 7 Dimensions and tolerances 7.1 Dimensions The dimensions of non-metallic PTFE envelope gaskets shall be as given in Table 1. NOTE: Gasket thickness is not specified but it should be selected taking into account the properties of the gasket materials and the intended servic
38、e application. It is recommended that the gasket manufacturer should be consulted when selecting gasket thickness (see 4.4). Table 1 Dimensions of non-metallic PTFE envelope gaskets Nominal size Gasket inside diameter Envelope outside diameter Gasket outside diameter Class 150 Class 300 DN NPS a mm
39、mm mm mm 15 22 40 47,5 54,0 20 27 50 57,0 66,5 25 1 34 60 66,5 73,0 32 1 43 70 76,0 82,5 40 1 49 80 85,5 95,0 50 2 61 92 104,5 111,0 65 2 73 110 124,0 130,0 80 3 89 126 136,5 149, 0 100 4 115 151 174,5 181,0 125 5 141 178 196, 5 216,0 150 6 169 206 222,0 251,0 200 8 220 260 279,0 308,0 250 10 273 31
40、4 339,5 362,0 300 12 324 365 409,5 422,0 350 14 356 412 450,5 485,5 400 16 407 469 514,0 539,5 450 18 458 528 549,0 597,0 500 20 508 578 606,5 654,0 600 24 610 679 717,5 774,5 aFor information only.Page 9 EN 12560-3:2001 BSI 03-2001 7.2 Tolerances The following tolerances will apply throughout this
41、standard: Outside diameter DN 300 and below 52 , 1 0 mm DN 350 and above 05 , 3 0 mm Inside diameter DN 300 and below 52 , 1 0 mm DN 350 and above 05 , 3 0 mm 8 Marking Gaskets shall be marked either individually or on the packaging containing the gaskets or, by agreement between supplier and purcha
42、ser, on the packaging containing each individual gasket, with the following information: a) the number and part of this European Standard, i.e. EN 12560-3; b) gasket type designation (see 4.3); c) the nominal size (see Table 1); d) the Class designation (see Table 1); e) thickness; f) materials; g)
43、manufacturers name or trademark. EXAMPLE EN 12560-3 Type C DN 100 Class 150 - 2 mm XXX AAA/BBB.Page 10 EN 12560-3:2001 BSI 03-2001 Annex A (informative) A-deviations This European Standard is mandated under the Council Directive on the approximation of the laws of the Member States concerning pressu
44、re equipment. A-deviation: National deviation due to regulations, the alteration of which is for the time being outside the competence of the CEN/CENELEC member. NOTE: (from CEN/CENELEC IR Part: 2, 3.1.9) Where standards fall under EC Directives, it is the view of the Commission of the European Comm
45、unities (OJ No G 59, 9.3.1982) that the effect of the decision of the Court of Justice in case 815/79 Cremonini/Vrankovich (European Court Reports 1980, p. 3583) is that compliance with A-deviations is no longer mandatory and that the free movement of products complying with such a standard should n
46、ot be restricted except under the safeguard procedure provided for in the relevant Directive. A-deviations in an EFTA country are valid instead of the relevant provisions of the European Standard in that country until they have been removed. With reference to clause 5, “Gasket designs”: Denmark Beke
47、ndtgrelse om asbest (Nr. 660 af 24. juni 1986) Bekendtgrelse om ndring af bekendtgrelse om asbest (Nr. 139 af 23. marts 1987) (Nr.984 af 11. december 1992) According to this order, the use of asbestos and material containing asbestos is prohibited in Denmark. Austria Order on the use of asbestos (BG
48、BI. Nr 324/1990 Asbestverordnung). According to this ordinance the use of gasket materials containing asbestos is prohibited in Austria. Czech Republic Decree No. 76/1990 Coll. Health Regulations of the Ministry of Health and Social Affairs of CSR Head of Public Health of CSR dated 27 February 1990
49、which amends the guidelines of the Ministry of Health of CSR Head of Public Health of CSR No. 64/1984 Coll. Health Regulations concerning health principles for work with chemical carcinogens. Commencement of production of materials containing asbestos shall be authorized by Head of Public Health of the Czech Republic. Products and materials containing asbestos may be used only where absolutely necessary and only for such technical and fire prevention purposes where
