1、 STD.BS1 BS EN 325b0-3-ENGL 2003 3b24bb 0903749 25T BRITISH STANDARD 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
2、 EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 12560-32001 STD*BSI ES EN 125b0-3-ENGL 2001 3b24bb9 0703750 “71 BS EN 12560-32001 Amd. No. National foreword Date Comments This British Standard is the official English language version of The UK participation in its preparation was entrusted to Technical
3、Committee PSEIZ, Jointing material and compounds, which has the responsibility to: EN 12560-3:ZOOl. - - aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor relate
4、d international and European developments and promulgate them in the UK. - A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may
5、 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 Electronic Catalogue . A British Standard does not purport to include all the necessary provisions of a contract. Users of British
6、Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standar
7、ds Committee and comes into effect on 15 March 2001 Summary Of pages This document comprises a front cover, 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
8、 publication 8 BSI 03-2001 ISBN O 580 37048 8 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 125603 January 2001 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
9、les brides dsignes Class - Partie 3: Joints non mtalliques enveloppe PTFE Flansche und ihre Verbindungen - Dichtungen fr Flansche mit Class-Bezeichnung - Teil 3: Nichtmetallische Weichstoffdichtungen mit PTFE-Mantel This European Standard was approved by CEN on 28 December 2000. CEN members are boun
10、d to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status 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 Man
11、agement 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 translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the
12、 official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR ST.4NDARDIZATION
13、 COMITE EUROPEEN DE NORMALISATION EUROPAISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 8-1050 Brussels O 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12560-3:2001 E Page 2 EN 12560-312001 Page Contents For
14、eword 3 Introduction . 4 1 2 3 3.1 3.2 3.3 4 4.1 4.2 4.3 4.4 5 6 7 7.1 7.2 8 Scope 5 Normative references . 5 Terms and definitions 5 DN 5 NPS 5 Class . 5 Designations . 6 Range of Class designations . 6 Range of gasket sizes . 6 Gasket design 6 Information to be supplied by the purchaser . 6 Gasket
15、 designs . 6 Gasket type . 8 Dimensions and tolerances . 8 Dimensions 8 Tolerances 9 Marking . 9 Annex A (informative) A-deviations . 10 O BSI 03-2001 STDmBSI BS EN 125b0-3-ENGL 2001 1b24bb9 0903753 780 Page 3 EN 12560-3:2001 Foreword This European Standard has been prepared by Technical Committee C
16、ENTTC 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 identical text or by endorsement, at the latest by July 2001, and conflicting national standards shall be withdrawn at the
17、 latest by July 2001. According to the CENEENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Net
18、herlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. The annex A is informative and contains “A-deviations“. O BSI 03-2001 Page 4 EN 12560-3:2001 Introduction EN 12560 consists of seven parts: Part 1 : Non-metallic flat gaskets with or without inserts. Part 2: Spiral wound
19、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 5: Metallic ring-joint gaskets for use with steel flanges. Part 6: Kammprofile gaskets for use with steel flanges.
20、 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 IS0 standards. WARNING: Gaskets made to this standard may contain asbestos. Materials containing asbestos may be subject to legislation that requ
21、ires 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. STD-BSI BS EN 125b0-3-ENGL 2003 3b2LibbS 0703755 553 H Page 5 EN 12560-3:2001 I Scope This European Standard specifies the dimensions
22、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 175941997 for Class 150 and Class 300 for nominal sizes DN 15 and DN 600. NOTE: Dimensions of other types of gaskets for use with flanges complyi
23、ng with DrEN 1759-1:2000. DrEN 1759-3:1994 and DEN 1759-4:2000 are aiven in prEN 12560-1 :2000; prEN 12560-2:2000, prEN 1256042000, prE 12560-5:2000, prEN 12560-6:2000 and prEN 12560-7:2000. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from oth
24、er publications. These nonnative 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 apply to this European Standard only when incorporated in it by amendment or
25、 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, faings and accessories, Class designated - Part 7: Steel flanges NPS % to NPS 24. prEN 1759-3: 1 994 Fl
26、anges and their joints - Circular flanges for pipes, valves, fittngs and accessories, Class designated - Part 3: Copper alloy flanges. prEN 175941 997 Flanges and their joints - Circular flanges for pipes, values, fittings and accessories, Class designated - Part 4: Aluminium alloy flanges. EN IS0 6
27、708 Pipework components - Definjtion and selection of DN (nominal size) (IS0 6708:1995). 3 Terms and definitions For the purposes of this European Standard the following terms and definitions apply: 3.1 DN see EN IS0 6708 3.2 NPS see prEN 1759-3: 1994 3.3 Class see prEN 1759-3:1994 O BSI 03-2001 Pag
28、e 6 EN 12560-312001 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; - Class300. 4.2 Range of gasket sizes Gasket nominal sizes shall be designated inaccordance with the ranges
29、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; - DesignC. 4.4 Information to be supplied by the purchaser The following information shall be supplied by the purchaser when ordering gaskets: a) t
30、he number and Part of this European Standard, .e. EN 12560-3; b) gasket design (see 4.3); c) the nominal size (see Table 1); d) e) Class designation (see Table 1); thickness (see NOTE to clause 7); Additional information that should be supplied by the purchaser: 9 expected operating conditions for w
31、hich 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 fluid, the operating conditions, the properties of t
32、he 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 12560-3-C-DN 100-Class 150-2 mm. 5 Gasket designs Gasket
33、s 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 applications. O BSI 03-2001 STDeBSI BS EN 125b0-3-ENGL 2001
34、= 1b29bb7 0901757 32b D Page 7 EN 12560-32001 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). Atte
35、ntion 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 ga
36、sket 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 A B Key 1 Insert 2 Envelope 3 Gasket, inside diameter 4 Envelop, outside diameter
37、5 Gasket, outside diameter Figure 1 -Typical designs of non-metallic PTFE envelope gaskets O BSI 03-2001 Page 8 EN 12560-312001 6 Gaskettype 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 f
38、acings are shown 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 in
39、tended service application. It is recommended that the gasket manufacturer should be consulted when selecting gasket thickness (see 4.4). Table I - Dimensions of non-metallic PTFE envelope gaskets Nominal size DN 15 20 25 32 40 50 65 80 1 O0 125 150 200 250 300 350 400 450 500 600 NPSa ?4 % 1 1% 1%
40、2 2% 3 4 5 6 8 10 12 14 16 18 20 24 Gasket inside diameter mm 22 27 34 43 49 61 73 89 115 141 169 220 273 324 356 407 458 508 61 O Envelope outside diameter mm 40 50 60 70 80 92 110 126 151 1 78 206 260 314 365 41 2 469 528 578 679 Gasket outside diameter Class 150 mm 47,5 57,O 66,5 76,O 85,5 104,5
41、124,O 136,5 174,5 196,5 222,o 279,O 339,5 409,5 450,5 514,O 549,o 606,5 717,5 Class 300 mm 5490 66,5 73,0 82,5 95,0 111,0 130,0 149, O 181,0 216,0 251 ,O 308,0 362,0 422,0 485,5 539,5 597,0 654,0 774,5 a For information onlv. Q BSI 03-2001 STD=BSI BS EN 125b0-3-ENGL 2001 Lb24bb7 0701759 1T9 Page 9 E
42、N 12560-32001 7.2 Tolerances The following tolerances will apply throughout this standard: Outside diameter DN 300 and below DN 350 and above Inside diameter DN 300 and below DN 350 and above O mm - 1,52 O - 3,05 mm O mm - 1,52 O mm - 3,05 8 Marking Gaskets shall be marked either individually or on
43、the packaging containing the gaskets or, by agreement between supplier and purchaser, on the packaging containing each individual gasket, with the following information: a) the number and part of this European Standard, .e. EN 12560-3; b) c) gasket type designation (see 4.3); the nominal size (see T
44、able 1); d) the Class designation (see Table 1); e) thickness; 9 materials; g) manufactureis name or trademark. EXAMPLE EN 12560-3-TypeC -DN 100-Class 150-2mm- XXX-AAAIBBB. O BSI 03-2001 Page 10 EN 12560-312001 Annex A (informative) A-deviations This European Standard is mandated under the Council D
45、irective on the approximation of the laws of the Member States concerning pressure equipment. A-deviation: National deviation due to regulations, the alteration of which is for the time being outside the competence of the CENKENELEC member. NOTE: (from CENKENELEC IR Part: 2, 3.1.9) Where standards f
46、all under EC Directives, it is the view of the Commission of the European Communities (OJ No G 59, 9.3.1982) that the effect of the decision of the Court of Justice in case 815/79 CremoniniNrankovich (European Court Reports 1980, p. 3583) is that compliance with A-deviations is no longer mandatory a
47、nd that the free movement of products complying with such a standard should not 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
48、have been removed. With reference to clause 5, “Gasket designs”: Denmark Bekendtgarelse om asbest (Nr. 660 af 24. juni 1986) Bekendtgarelse om ndring af bekendtgarelse om asbest (Nr. 139 af 23. marts 1987) (Nr.984 af 11. december 1992) According to this order, the use of asbestos and material contai
49、ning asbestos is prohibited in Denmark. Austria Order on the use of asbestos (BGBI. 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 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
