1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Industrial valves Lined metal quarter turn and check valves for chemical process and related industriesBS ISO 19240:2017 ISO 2017Industrial valves Lined metal quarter turn and check valves for chemical process and relat
2、ed industriesRobinetterie industrielle Robinets quart de tour et clapets de non-retour mtalliques revtus pour les industries de procd chimique et industries connexesINTERNATIONALSTANDARDISO19240First edition2017-05Reference numberISO 19240:2017(E)National forewordThis British Standard is the UK impl
3、ementation of ISO 19240:2017.The UK participation in its preparation was entrusted to Technical Committee PSE/18, Industrial valves, steam traps, actuators and safety devices against excessive pressure.A list of organizations represented on this committee can be obtained on request to its secretary.
4、This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 92824 6ICS 23.060.01; 83.040.10; 23.060.50Compliance with a British
5、 Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS ISO 19240:2017 ISO 2017Industrial valves
6、Lined metal quarter turn and check valves for chemical process and related industriesRobinetterie industrielle Robinets quart de tour et clapets de non-retour mtalliques revtus pour les industries de procd chimique et industries connexesINTERNATIONAL STANDARDISO19240First edition2017-05Reference num
7、berISO 19240:2017(E)BS ISO 19240:2017ISO 19240:2017(E)ii ISO 2017 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electr
8、onic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier,
9、 Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 19240:2017ISO 19240:2017(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 24 Pressure/temperature ratings 35 Design 35.1 Body wall thickness 35.2 Lining and seat mate
10、rials . 45.3 Liner anchoring 45.4 Minimum lining thickness . 45.5 Shaft 45.6 Dimension and tolerances of body ends . 45.6.1 Dimensions of flanges . 45.6.2 Face-to-face dimensions 45.6.3 Flange facing type and dimension 46 Marking 57 Inspection and testing 67.1 Lining test 67.1.1 Visual inspection 67
11、.1.2 Porosity test . 67.1.3 Anti-static test 67.2 Pressure test 67.3 Allowable closure test leakage rate . 67.4 Additional examination . 6Bibliography 7 ISO 2017 All rights reserved iiiContents PageBS ISO 19240:2017ISO 19240:2017(E)ForewordISO (the International Organization for Standardization) is
12、a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represent
13、ed on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop
14、this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC
15、 Directives, Part 2 (see www .iso .org/ directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during th
16、e development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on the volun
17、tary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .htm
18、l.This document was prepared by Technical Committee ISO/TC 153, Valves.iv ISO 2017 All rights reservedBS ISO 19240:2017ISO 19240:2017(E)IntroductionThe purpose of this document is to establish requirements for lined metal quarter turn valves (butterfly valves, ball valves, plug valves and check valv
19、es) in corrosive fluid applications and related industries. It is intended that this document facilitates compatibility with flanged lined fittings and lined pipe. ISO 2017 All rights reserved vBS ISO 19240:2017BS ISO 19240:2017Industrial valves Lined metal quarter turn and check valves for chemical
20、 process and related industries1 ScopeThis document specifies requirements for design, dimensions, material, fabrication and production testing of lined metal quarter turns valves (plug valves, butterfly valves, ball valves) and check valves with flanged, wafer and wafer lug body types.It covers val
21、ves of the nominal sizes, DN: 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500, 600, 700, 750, 800, 900, 1 000, 1 200;corresponding to nominal pipe sizes, NPS 1/2 to NPS 48, and applies to pressure designations: PN 10, 16, 25, 40; Class 150, 300.2 Normative references
22、The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applie
23、s.ISO 5208:2015, Industrial valves Pressure testing of metallic valvesISO 5209:1977, General purpose industrial valves MarkingISO 5752, Metal valves for use in flanged pipe systems Face-to-face and centre-to-face dimensionsEN 1092-1:2007+A1: 2013, Flanges and their joints Circular flanges for pipes,
24、 valves, fittings and accessories, PN designated Part 1: Steel flangesEN 1092-2, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated Part 2: Cast iron flangesEN 12266-2:2012, Industrial valves Testing of metallic valves Part 2: Tests, test procedures
25、and acceptance criteria Supplementary requirementsEN 12516-1, Industrial valves Shell design strength Part 1: Tabulation method for steel valve shellsEN 12516-2, Industrial valves Shell design strength Part 2: Calculation method for steel valve shellsEN 12516-4, Industrial valves Shell design streng
26、th Part 4: Calculation method for valve shells manufactured in metallic materials other than steelEN 14879-4:2007, Organic coating systems and linings for protection of industrial apparatus and plants against corrosion caused by aggressive media Part 4: Linings on metallic componentsASME B16.1, Gray
27、 Iron Pipe Flanges and Flanged Fittings: Classes 25, 125, and 250ASME B16.5, Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch StandardASME B16.34, Valves Flanged, Threaded and Welding EndINTERNATIONAL STANDARD ISO 19240:2017(E) ISO 2017 All rights reserved 1BS ISO 19240:2017ISO
28、19240:2017(E)ASME B16.42:2011, Ductile Iron Pipe Flanges and Flanged FittingsASME B16.47, Large Diameter Steel Flanges: NPS 26 through NPS 60 Metric/Inch StandardASME BPVC -VIII -1: 2015, Boiler and Pressure Vessel Code Section VIII: Rules for Construction of Pressure Vessels Division 1: Design 1 MP
29、a = 1 N/mm2(bar is a unit deprecated by ISO).3.7anti-static designdesign that provides for electrical continuity between the stem and the body parts of the valve4 Pressure/temperature ratingsThe pressure/temperature ratings of the valve shall meet the specification given in the appropriate pressure/
30、temperature tables of the standards listed in Table 1.Table 1 Standards for pressure/temperature ratingsBody material PN-designated valve Class-designated valveSteel EN 125161 ASME B16.34Cast iron EN 10922 ASME B16.1Ductile iron EN 10922 ASME B16.42The complete assembly shall comply with differentia
31、l pressure and pressure/temperature ratings. The maximum allowable temperature and/or the design differential pressure may be limited by restrictions in the pressure/temperature ratings of materials used for certain components like the fluoropolymer lining materials.Restrictions shall be marked on t
32、he valve by the manufacturer (see Clause 6).For temperatures below the lowest temperature listed in the pressure/temperature tables, the working pressure shall be no greater than the pressure for the lowest listed temperature. The use of valves at lower temperatures is the responsibility of the user
33、. Consideration should be given to the loss of ductility and impact strength of materials at low temperature.5 Design5.1 Body wall thicknessThe minimum body wall thickness shall be determined using the standards indicated in Table 2.For pressure-temperature ratings of the valve bodies outside the si
34、ze ranges of the referenced standards of Table 2, design and calculations for pressure-containing elements shall be in accordance with an internationally recognized design code or standards with consideration of pipe loads, operating forces, etc. The choice of standard shall be by agreement.NOTE An
35、example of internationally recognized design codes or standards is ASME BPVC-VIII, Division 1 or Division 2. ISO 2017 All rights reserved 3BS ISO 19240:2017ISO 19240:2017(E)Table 2 Standards for body wall thicknessBody material PN-designated valve Class-designated valveSteelEN 125161EN 125162ASME B1
36、6.34Cast iron EN 125164 ASME BPVC -VIII -1: 2015, Part UCIDuctile iron EN 125164ASME B16.42:2011, Annex AASME BPVC -VIII -1: 2015, Part UCD5.2 Lining and seat materialsThe valve lining shall be made of fluoropolymer or polymer materials.5.3 Liner anchoringThe liner shall be mechanically anchored to
37、the valve body and closure element to ensure the proper fixation of the liner in both the axial and radial flow directions.5.4 Minimum lining thicknessThe minimum lining thickness shall be 2,5 mm on all media wetted surfaces, as well on the end flange sealing faces.5.5 ShaftThe shaft lining shall be
38、 continued above the primary shaft seal.The shaft design shall be blow-out proof.5.6 Dimension and tolerances of body ends5.6.1 Dimensions of flangesBody end of PN-designated valves shall be capable of mating with connecting flanges complying with the requirements of EN 1092-1 and EN 1092-2.Body end
39、 of Class-designated valves shall be capable of mating with connecting flanges complying with the requirements of ASME B16.5 for NPS 24 or ASME B16.47 for NPS 24.In case of valve size outside the scope of EN 1092-1, EN 1092-2, ASME B16.5 or ASME B16.47, another flange standard may be used by agreeme
40、nt between the manufacturer and the purchaser.5.6.2 Face-to-face dimensionsThe face-to-face dimensions shall be in accordance with ISO 5752, unless otherwise specified in the purchasing documents. The basic series required shall be specified by the purchaser.In case of valve configuration outside th
41、e ranges covered by ISO 5752, the face-to-face dimensions may be defined by agreement between the manufacturer and the purchaser.Tolerances on face-to-face dimensions shall be in accordance with ISO 5752.5.6.3 Flange facing type and dimensionFigure 1 shows two typical flange face lining designs.4 IS
42、O 2017 All rights reservedBS ISO 19240:2017ISO 19240:2017(E)Flange facing dimension of PN-designated valves shall be according to EN 1092-1:2007+A1: 2013 form B, only shape and dimensions like form B1.Flange facing dimension of Class-designated valves shall be according to ASME B16.5 or ASME B16.47.
43、Key1 flange2 liningFigure 1 Typical flange face linings6 MarkingEach PN-designated valve shall be marked in accordance with ISO 5209 as follows.a) For valves with DN 50, only markings 1 to 4 are mandatory. They shall be placed on the valve body or on an attached plate.b) For all nominal diameters, t
44、he following markings are required: design differential pressure; item 5 of ISO 5209:1977 if required by the valve type; item 6 of ISO 5209:1977 if required by the valve type; item 7 of ISO 5209:1977 if the valve application is restricted.NOTE Markings 8 to 19 of ISO 5209:1977 are optional.Each Clas
45、s-designated valve shall be marked in accordance with ASME B16.34. ISO 2017 All rights reserved 5BS ISO 19240:2017ISO 19240:2017(E)7 Inspection and testing7.1 Lining test7.1.1 Visual inspectionAll inside and outside lining shall show no evidence of pinholes, porosity, cracks or surface discontinuiti
46、es, when inspected. The linings shall fit properly inside the housings with no delamination.The gasket seating surface of the lining shall be free of surface defects that could impair sealing effectiveness. Scratches, dents, nicks, or tool marks on the seating surface shall not be deeper than 10 % o
47、f the face lining thickness and the length shall not exceed more than 20 % of the sealing surface.in the radial direction.7.1.2 Porosity testAll non-conductive lined components shall be tested between 15 kV and 25 kV spark test to make sure the lining is not porous, according to EN 14879-4:2007, 9.4
48、.6.7.1.3 Anti-static testElectrical conductivity between the obturator and the body of the valve shall be tested in accordance with EN 12266-2:2012, F21 and F22.7.2 Pressure testEach valve shall be pressure-tested in accordance with ISO 5208. All pressure tests shall be in accordance with ISO 5208:2
49、015, Table 1.7.3 Allowable closure test leakage rateThe closure test leakage rate shall be rate A according to ISO 5208:2015 and shall be published in the valve manufacturers literature.7.4 Additional examinationAdditional examinations or tests may be applied upon agreement between the purchaser and the manufacturer.6 ISO 2017 All rights reservedBS ISO 19240:2017ISO 19240:2017(E)Bibliography1 ISO 6708:1995, Pipework components Definition and selection of DN (nominal si
