1、BSI Standards PublicationBS ISO 10631:2013Metallic butterfly valves forgeneral purposesBS ISO 10631:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 10631:2013.The UK participation in its preparation was entrusted to TechnicalCommittee PSE/18/3, Industrial
2、valves, steam traps, actuators andsafety devices against excessive pressure - Part turn valves (Ball, plugand butterfly).A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a cont
3、ract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 73191 4ICS 23.060.99Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the autho
4、rity of theStandards Policy and Strategy Committee on 30 September 2013.Amendments issued since publicationDate Text affectedBS ISO 10631:2013 ISO 2013Metallic butterfly valves for general purposesRobinets mtalliques papillon dusage gnralINTERNATIONAL STANDARDISO10631Second edition2013-09-01Referenc
5、e numberISO 10631:2013(E)BS ISO 10631:2013ISO 10631:2013(E)ii ISO 2013 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2013All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, i
6、ncluding 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 officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41
7、 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 10631:2013ISO 10631:2013(E) ISO 2013 All rights reserved iiiContents PageForeword iv1 Scope . 12 Normative references 13 Terms and definitions . 24 Pressure/temperature ratings 45 Design 45.1 Wall thickness 45.2 Constr
8、uction examples. 55.3 End connections . 55.4 Shaft 75.5 Operation . 75.6 Force or torque to be applied to manually actuated valves 85.7 Dimensions and tolerances of body ends 106 Materials 116.1 Body . 116.2 Disc . 116.3 Shaft . 126.4 Seating . 127 Suitability of use 127.1 Allowable leakage rate 127
9、.2 Flow velocity 128 Marking .129 Testing 1310 Inspection and preparation for despatch 1311 Example of data sheet 13Annex A (informative) Example of data sheet 14Bibliography .15BS ISO 10631:2013ISO 10631:2013(E)ForewordISO (the International Organization for Standardization) is a worldwide federati
10、on 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 represented on that committee
11、. 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 this document and tho
12、se 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 Directives, Part 2.
13、www.iso.org/directivesAttention 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 the development of the document
14、will be in the Introduction and/or on the ISO list of patent declarations received. www.iso.org/patentsAny trade name used in this document is information given for the convenience of users and does not constitute an endorsement.The committee responsible for this document is ISO/TC 153, Valves, Subc
15、ommittee SC 1, Design, manufacture, marking and testing.This second edition cancels and replaces the first edition (ISO 10631:1994), which has been technically revised.iv ISO 2013 All rights reservedBS ISO 10631:2013INTERNATIONAL STANDARD ISO 10631:2013(E)Metallic butterfly valves for general purpos
16、es1 ScopeThis International Standard specifies requirements for design, materials (e.g. steel, cast iron, ductile iron, copper alloy), pressure/temperature ratings and testing for butterfly valves having metallic bodies for use in general purpose flanged or butt welding piping systems.This Internati
17、onal Standard covers butterfly valves of the following nominal sizes, DN and NPS: DN 40; 50; 65; 80; 100; 125; 150; 200; 250; 300; 350; 400; 450; 500 (550); 600 (650); 700; 750; 800; 900; 1 000; 1 200; 1 400; 1 600; 1 800; 2 000; 2 200; 2 400. NPS 1 1/2; 2; 2 1/2; 3; 4; 5; 6; 8; 10; 12; 14; 16; 18;
18、20; (22); 24; (26); 28; 30; 32; 36; 40; 48; 56; 64; 72; 80; 88; 96.This International Standard is applicable to butterfly valves of the following pressure designations, PN and Class: PN 2,5; PN 6; PN 10; PN 16; PN 25; PN 40; Class 125; 150; 300.2 Normative referencesThe following documents, in whole
19、 or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 185, Grey cast irons ClassificationIS
20、O 1083, Spheroidal graphite cast irons - ClassificationISO 3755, Cast carbon steels for general engineering purposesISO 4991, Steel castings for pressure purposesISO 5208:2008, Industrial valves Pressure testing of metallic valvesISO 5209:1977, General purpose industrial valves MarkingISO 5211, Indu
21、strial valves Part-turn actuator attachmentsISO 5752, Metal valves for use in flanged pipe systems Face-to-face and centre-to-face dimensionsISO 5922, Malleable cast ironISO 7005-3, Metallic flanges Part 3: Copper alloy and composite flangesISO 9327-1, Steel forgings and rolled or forged bars for pr
22、essure purposes Technical delivery conditions Part 1: General requirementsISO 9327-2, Steel forgings and rolled or forged bars for pressure purposes Technical delivery conditions Part 2: Non-alloy and alloy (Mo, Cr and CrMo) steels with specified elevated temperature propertiesISO 9327-3, Steel forg
23、ings and rolled or forged bars for pressure purposes Technical delivery conditions Part 3: Nickel steels with specified low temperature properties ISO 2013 All rights reserved 1BS ISO 10631:2013ISO 10631:2013(E)ISO 9327-4, Steel forgings and rolled or forged bars for pressure purposes Technical deli
24、very conditions Part 4: Weldable fine grain steels with high proof strengthISO 9327-5, Steel forgings and rolled or forged bars for pressure purposes Technical delivery conditions Part 5: Stainless steelsISO 9328-1, Steel flat products for pressure purposes Technical delivery conditions Part 1: Gene
25、ral requirementsISO 9328-2, Steel flat products for pressure purposes Technical delivery conditions Part 2: Non-alloy and alloy steels with specified elevated temperature propertiesISO 9328-3, Steel flat products for pressure purposes Technical delivery conditions Part 3: Weldable fine grain steels,
26、 normalizedISO 9328-4, Steel flat products for pressure purposes Technical delivery conditions Part 4: Nickel-alloy steels with specified low temperature propertiesISO 9328-5, Steel flat products for pressure purposes Technical delivery conditions Part 5: Weldable fine grain steels, thermomechanical
27、ly rolledEN 1092-1:2007, Flanges and their joints Circular flanges for pipes, 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 1092-3, Flange
28、s and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated Part 3: Copper alloy flangesEN 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 metho
29、d for steel valve shellsEN 12516-4, Industrial valves Shell design strength Part 4: Calculation method for valve shells manufactured in metallic materials other than steelASME B1.1, Unified Inch Screw Threads, UN and UNR Thread FormASME B16.1, Gray Iron Pipe Flanges and Flanged Fittings: Classes 25,
30、 125, and 250ASME B16.5, Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch StandardASME B16.24, Cast Copper Alloy Pipe Flanges and Flanged Fittings: Classes 150, 300, 600, 900, 1500 and 2500ASME B16.25, Buttwelding EndsASME B16.34, Valves Flanged, Threaded and Welding EndASME B16
31、.42, Ductile Iron Pipe Flanges and Flanged Fittings: Classes 150 and 300ASME B16.47, Large Diameter Steel Flanges: NPS 26 through NPS 60 Metric/Inch Standard3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.2 ISO 2013 All rights reservedBS ISO 10631:
32、2013ISO 10631:2013(E)3.1nominal sizeDNalphanumeric designation of size for components of a pipework system, which is used for reference purposes, comprising the letters DN followed by a dimensionless whole number which is indirectly related to the physical size, in millimetres, of the bore or outsid
33、e diameter of the end connectionsSOURCE: ISO 6708:1995, definition 2.13.2nominal pressurePNnumerical designation relating to pressure that is a convenient rounded number for reference purposes, and which comprises the letters PN followed by the appropriate reference numberNote 1 to entry: It is inte
34、nded that all equipment of the same nominal size (DN) designated by the same PN number have compatible mating dimensions.Note 2 to entry: The maximum allowable pressure depends on materials, design, and working temperature, and is to be selected from the tables of pressure/temperature ratings given
35、in the appropriate standards.SOURCE: ISO 7268:1983, Clause 2, modified The definition and Notes 1 and 2 have been slightly modified.3.3NPSalphanumeric designation of size for components of a pipework system, which is used for reference purposes, and which comprises the letters NPS followed by a dime
36、nsionless number indirectly related to the physical size of the bore or outside diameter of the end connectionsNote 1 to entry: The number following the letters NPS does not represent a measurable value and is not intended to be used for calculation purposes except where specified in the relevant st
37、andard.3.4Classalphanumeric designation used for reference purposes related to a combination of mechanical and dimensional characteristics of a component of a pipework system, which comprises the word “Class” followed by a dimensionless whole numberNote 1 to entry: The number following the word “Cla
38、ss” does not represent a measurable value and is not intended to be used for calculation purposes except where specified in the relevant standard.3.5face-to-face dimensiondistance between the body ends of the installed equipment in accordance with ISO 57523.6differential pressureplimiting pressure d
39、ifference across the upstream and downstream sides of the closure element seals when the valve is in the closed positionNote 1 to entry: Differential pressure is expressed in bar.1)3.7cold working pressureCWPmaximum fluid pressure assigned to a valve for operation at a fluid temperature between - 20
40、 C and 38 C1) 1 bar = 0,1 MPa = 105Pa; 1 MPa = 1 N/mm2. ISO 2013 All rights reserved 3BS ISO 10631:2013ISO 10631:2013(E)4 Pressure/temperature ratingsThe pressure/temperature ratings of the valve shall meet the specification given in the appropriate pressure/temperature tables of the standards liste
41、d in Table 1.Table 1Body material PN-designated valve Class-designated valveSteel EN 12516-1 ASME B16.34Cast ironEN 1092-2ASME B16.1Ductile iron ASME B16.42Copper alloy EN 1092-3 ASME B16.24The complete assembly shall comply with differential pressure p/temperature ratings. The maximum allowable tem
42、perature and/or the design differential pressure may be limited by restrictions in the pressure/temperature ratings of materials used for certain components.Restrictions shall be marked on the valve by the manufacturer (see Clause 8).For temperatures below the lowest temperature listed in the pressu
43、re/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. Consideration should be given to the loss of ductility and impact strength of materials at low temperature.5
44、 Design5.1 Wall thicknessThe minimum wall thickness shall be determined using the standards indicated in Table 2.For pressure-temperature ratings of the valve bodies outside the size ranges of the referenced standards of Table 2, design and calculations for pressure-containing elements shall be in a
45、ccordance with an internationally recognised design code or standards with consideration of pipe loads, operating forces, etc. The choice of standard shall be by agreement.NOTE Examples of internationally recognised design codes or standards are ASME Section VIII, Division 1, or Division 2, and EN 1
46、3445-3.Table 2Body material PN-designated valve Class-designated valveSteelEN 12516-1EN 12516-2ASME B16.34Cast ironEN 12516-4ASME B16.1Ductile iron ASME B16.42Copper alloy ASME B16.244 ISO 2013 All rights reservedBS ISO 10631:2013ISO 10631:2013(E)5.2 Construction examplesThe valve shall be of either
47、 concentric disc design see Figure 1 a) or eccentric disc design see Figure 1 b). The offset may be single, double or triple.a) Concentric design b) Eccentric design (double offset design shown)Figure 1 Construction illustrations5.3 End connections5.3.1 Double-flanged valvesEnd connections of double
48、-flanged valves shall be in accordance with 5.7.2.1. See Figure 2.Figure 2 End connections of double-flanged valves5.3.2 Wafer-type valves5.3.2.1 GeneralThe PN-designated valves are for installation between pipe flanges that are in accordance with EN 1092-1, EN 1092-2 and EN 1092-3.The Class-designa
49、ted valves are for installation between pipe flanges that are in accordance with ASME B16.5 for NPS 24 or ASME B16.47 for NPS 24.Where through bolting is used with the result that the valve shaft holes are too close to the bolt holes, threaded bolt holes may be substituted.In case of valve size outside the scope of EN 1092, ASME B16.5 or ASME B16.47, another flange standard may be used by agreement between the manufacturer and the purchaser. The wall th
