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1、BRITISH STANDARDBS EN 1514-2:2005Flanges and their joints Gaskets for PN-designated flanges Part 2: Spiral wound gaskets for use with steel flangesThe European Standard EN 1514-2:2005 has the status of a British StandardICS 23.040.80? BS EN 1514-2:2005This British Standard was published under the au
2、thority of the Standards Policy and Strategy Committee on 28 June 2005 BSI 28 June 2005ISBN 0 580 46100 9National forewordThis British Standard is the official English language version of EN 1514-2:2005. It supersedes BS EN 1514-2:1997 which is withdrawn.The UK participation in its preparation was e
3、ntrusted to Technical Committee PSE/2, Jointing Materials and Compounds, which has the responsibility to:A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications refe
4、rred to in this document may be found in the BSI Catalogueunder the section entitled “International Standards Correspondence 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 provisi
5、ons of a contract. Users are responsible for its correct application.Compliance with a British Standard does not of 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 p
6、roposals for change, and keep the UK interests informed;monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 14, an inside back cover and a back cover.The BSI
7、copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. DateComments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1514-2 May 2005 ICS 23.040.80Supersedes EN 1514-2:1997 English version Flanges and their joints - Gask
8、ets for PN-designated flanges - Part 2: Spiral wound gaskets for use with steel flanges Brides et leurs assemblages - Joints pour les brides dsignes PN - Partie 2: Joints spirals pour utilisation avec des brides en acier Flansche und ihre Verbindungen - Dichtungen fr Flansche mit PN-Bezeichnung - Te
9、il 2: Spiraldichtungen fr Stahlflansche This European Standard was approved by CEN on 24 March 2005. 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-
10、to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat 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 unde
11、r the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ice
12、land, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassar
13、t, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1514-2:2005: E EN 1514-2:2005 (E) 2ContentsPage Foreword.3Introduction.41Scope .52Normative references.53Terms and definitions .54Designations .55Gasket des
14、igns .76Gasket types.87Dimensions.88Marking.11Annex A (informative) Information to be supplied by the purchaser.13Bibliography.14 EN 1514-2:2005 (E)3Foreword This European Standard (EN 1514-2:2005) has been prepared by Technical Committee CEN/TC 74 “Flanges and their joints”, the secretariat of whic
15、h 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 November 2005, and conflicting national standards shall be withdrawn at the latest by November 2005. This document supersedes EN 1
16、514-2:1997. EN 1514 consists of the following parts, Flanges and their joints - Dimensions of gaskets for PN-designated flanges: 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: Cor
17、rugated, flat or grooved metallic and filled metallic gaskets for use with steel flanges; Part 6: Covered serrated metal gaskets for use with steel flanges; Part 7: Covered metal jacketed gaskets for use with steel flanges; Part 8: Polymeric O-Ring gaskets for grooved flanges. According to the CEN/C
18、ENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Den-mark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem-bourg,
19、 Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland andUnited Kingdom. EN 1514-2:2005 (E) 4Introduction This European Standard replaces an earlier one issued in 1997. The reason for the revision is to ensure that the standard reflects the current practice wi
20、thin the German Chemical Industry. The dimension of the various components of the spiral wound gaskets described and their tolerances have been set with the objective of controlling the possibility of protrusion of the inner ring into the bore of the pipeline being sealed. The other features of the
21、standard have been set in order to ensure good functionality of spiral wound gaskets made to this European Standard. The dimensions of spiral wound gaskets for tongue and groove flanges and spigot and recess flanges to EN 1092-1 are not included in this European Standard. Such gaskets may be availab
22、le, however, for these types of flanges and the purchaser is advised to consult the manufacturer as to their availability. EN 1514-2:2005 (E)51 Scope This European Standard specifies the dimensions and marking of spiral wound gaskets for use in conjunction with flat face and raised face flanges comp
23、lying with EN 1092-1 for PN 10, PN 16, PN 25, PN 40, PN 63, PN 100 and PN 160 and up to and including DN 1000. NOTE 1 Dimensions of other types of gaskets for use with flanges to EN 1092-1, EN 1092-2, EN 1092-3 and EN 1092-4 are given in EN 1514-1, EN 1514-3, EN 1514-4, EN 1514-6, EN 1514-7 and EN 1
24、514-8. NOTE 2 Annex A lists information that should be supplied by the purchaser when ordering gaskets in circumstances where the choice of the gasket materials appropriate to the service is left to the supplier. 2 Normative references The following referenced documents are indispensable for the app
25、lication of this document. For dated refer-ences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1333, Pipework components Definition and selection of PN. EN ISO 6708, Pipework components Definition and sel
26、ection of DN (nominal size) (ISO 6708:1995).3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1DNsee EN ISO 6708 3.2PNsee EN 1333 4 Designations 4.1 Essential Features and Dimensions 4.1.1 General A major feature of the design of spiral
27、wound gaskets to the requirements of this European Standard is the mini-misation of the possibility of the inner ring protruding into the bore of the pipe to which the flange is attached. The fit of the inner ring and sealing element relative to the outer ring has been selected to comply with this o
28、bjective. The essential features of a spiral wound gasket in compliance with this specification are given in Figures 1 and 2 and/or are listed below. Movement of centre of inner ring relative to guide ring Up to DN 200 a maximum of 0,2 mm Above DN 200 a maximum of 0,4 mm Guide Ring Thickness 3 mm 0,
29、25 EN 1514-2:2005 (E) 6Sealing element location groove shall be centrally located in the guide ring Centre 0,1 mm Number of empty wraps on external diameter of the sealing 3 to 5 element Number of empty wraps on the internal diameter of the sealing 2 to 3 element Number of welds on the inner and out
30、er diameters of the sealing Minimum of 4 element, i.e. on the empty wraps Thickness of the metal of the sealing element 0,2 mm 0,02 mm Width of the profiled metal of the sealing element 4,5 mm 300.+Thickness of the filler material shall be as appropriate for the filler type Protrusion of the filler
31、above the profiled metal of the sealing 0,3 0,1 mm element Compression of the sealing element shall not result in contact between the flange and the guide ring, see also 4.1.2Graphite ash content maximum of 2 % PTFE filler to contain no recycled material and may be either sintered or non-sintered Sh
32、arp edges on inner ring and guide ring to be removed Dimensions to be as given in Table 1 4.1.2 Maximum Compression Metal to metal contact between the guide ring and the flange shall not be achieved with the maximum load that can be generated by the flange bolts. 4.1.3 The Use of an Inner Ring An in
33、ner ring shall be used with all gaskets using PTFE as the filler and with all gaskets for pressure groups PN 63, PN 100 and PN 160. In addition to the above, it is strongly recommended that an inner ring should be used with all gaskets, this should therefore be specified on the order for all gaskets
34、 for pressure groups PN 10, PN 25 and PN 40. 4.2 Range of PN Designations Gaskets shall be designated as suitable for use with one or more of the following PN designations of flanges: PN 10 PN 63 PN 25 PN 100 PN 40 PN 160 EN 1514-2:2005 (E)74.3 Range of DN (nominal sizes) Gasket nominal sizes shall
35、be designated in accordance with the ranges specified in Table 1.4.4 Gasket types Gasket types, as defined in Clause 6 and as illustrated in Figure 3, shall be designated as: Type C/I: Sealing element with centring ring and inner ring; Type C/O: Sealing element with centring ring. 4.5 Information to
36、 be supplied by the purchaser NOTE Where the purchaser wants the manufacturer to specify the materials of the gasket then the information that should be supplied to the manufacturer with the order is given in Annex A.5 Gasket designs Gaskets for which dimensions are specified shall be of one of the
37、designs shown in Figure 1. The clearance between the sealing element and the centring ring shall be as shown in Figure 2. NOTE 1 Figure 1 shows a typical design of a metallic spiral wound gasket and, for use with type A or type B flanges. NOTE 2 Type A and type B flange facings are illustrated in EN
38、 1092-1. NOTE 3 The profile of the metal winding of the sealing element is at the option of the manufacturer. NOTE 4 The materials of the gasket may be either specified by the purchaser or, if required by the purchaser, they may be chosen by the manufacturer to suit the operating conditions. In the
39、latter case, the purchaser should define the operating conditions in the enquiry and/or order (see Annex A). NOTE 5 The attention of the user is drawn to the load necessary to compress spiral wound gaskets and the available load with PN 10 flanges should be verified as adequate prior to using these
40、gaskets. EN 1514-2:2005 (E) 8a) Type C/I b) Type C/O Figure 1 Spiral wound gaskets 6 Gasket types Gaskets shall be one of the following types: a) Type C/I Sealing element with centring ring and inner ring; b) Type C/O Sealing element with centring ring. All gaskets shall have a centring ring. All PN
41、 63, PN 100 and PN 160 gaskets shall have an inner ring. All gaskets containing PTFE filler material shall have an inner ring. NOTE 1 The use of an inner ring is recommended for all PN designations and the purchaser should specify on the en-quiry and/or order if an inner ring is required for PN 10,
42、PN 25 and PN 40 gaskets (see Annex A). NOTE 2 The selection of gasket type should take into account the fluids, the operating conditions, the properties of the gasket materials, the type and surface finish of the flange facing and the flange bolt loading. It is recommended that selec-tion of gaskets
43、 for any particular application is made in consultation with the gasket supplier (see Annex A). 7 Dimensions The dimensions of spiral wound gaskets for types A and B flange facings shall be as given in Table 1 and overall thickness, including filler, shall be as given in Figure 2. EN 1514-2:2005 (E)
44、9Dimensions in millimetres Key a See Table 1 for details b Protrusion minimum of 0,2 mm c Gasket shall not compress such that metal to metal contact between flange and guide rings is achieved d Width (of profiled metal of the sealing element) e Tolerance: Up to DN 200 max. 0,2 mm, DN 200 max. 0,4 mm
45、. This parameter controls the amount by which the ring might protrude into the pipe bore 1 2 to 3 empty wraps 2 3 to 5 empty wraps 3 Central groove 0,1 mm 4 Sharp edges removed 5 Minimum of four welding points for each 6 Metal thickness 0,2 mm 0,02 mm 7 Thickness as appropriate to filler type Graphi
46、te Ash content 2 %, PTFE filler to contain no re-cycled material and may be either sintered or non-sintered. Figure 2 Spiral wound gasket details EN 1514-2:2005 (E) 10Table 1 Dimensisons Innerdiameterof the inner ring Width of the inner ringInnerdiameterof the sealing element Width of the sealing el
47、ement Innerdiameterof the guide ringWidth of the sealing element Innerdiameter of the guide ringOutside diameter of the guide ring for each pressure class d1bIR mind2 minbD mind3 minbD mind3 mind4DN PN 10, PN 25, PN 40 PN 63, PN 100, PN 160 PN 10 PN 25 PN 40 PN 63 PN 100 PN 160 10 18 3 24 5 34 5 34
48、46 56 15 23 3 29 5 39 5 39 51 61 20 28 3 34 6 46 61 25 35 3 41 6 53 6 53 71 82 32 43 3 49 6 61 82 40 50 3 56 6 68 6 68 92 103 50 61 4,5 70 8 86 8 86 107 113 119 65 77 4,5 86 8 102 10 106 127 137 143 80 90 4,5 99 8 115 10 119 142 148 154 100 115 6 127 8 143 10 147 162 168 174 180 125 140 6 152 10 172
49、 12 176 192 194 210 217 150 167 6 179 10 199 12 203 217 224 247 257 200 216 6 228 10 248 12 252 272 284 290 309 324 250 267 6 279 12 303 14 307 327 340 352 364 391 388 300 318 6 330 12 354 14 358 377 400 417 424 458 458 350 360 8 376 12 400 14 404 437 457 474 486 512 400 410 6 422 14 450 17 456 488
50、514 546 543 572 500 510 6 522 14 550 17 556 593 624 628 657 704 600 610 6 622 14 650 17 656 695 731 747 764 813 700 710 6 722 17 756 20 762 810 833 852 879 950 800 810 10 830 17 864 20 870 917 942 974 988 900 910 10 930 17 964 20 970 1 017 1 042 1 084 1 108 1 000 1 010 10 1 030 22 1 074 25 1 080 1 1