ISO 12149-1999 Bolted bonnet steel globe valves for general-purpose applications《螺栓连接阀盖的通用钢制截止阀》.pdf

1、AReference numberISO 12149:1999(E)INTERNATIONALSTANDARDISO12149First edition1999-09-01Bolted bonnet steel globe valves forgeneral-purpose applicationsRobinets soupape en acier chapeau boulonn pour applicationsgnralesCopyright International Organization for Standardization Provided by IHS under licen

2、se with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 12149:1999(E) ISO 1999All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronicor mechanical, including photocopy

3、ing and microfilm, without permission in writing from the publisher.International Organization for StandardizationCase postale 56 CH-1211 Genve 20 SwitzerlandInternet isoiso.chPrinted in SwitzerlandiiContents Page1 Scope 12 Normative references 13 Terms and definitions .24 Pressure/temperature ratin

4、gs.25 Design.25.1 Body wall thickness25.2 Body dimensions45.3 Auxiliary connections.85.4 Operation.116 Materials .116.1 Materials other than trim materials .116.2 Trim 116.3 Bolting127 Testing and inspection128 Marking .139 Designation 1510 Preparation for dispatch .15Annex A (informative) Informati

5、on to be specified by the purchaser 16Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,- ISOISO 12149:1999(E)iiiForewordISO (the International Organization for Standardizat

6、ion) is a worldwide federation of national standards bodies (ISOmember bodies). The work of preparing International Standards is normally carried out through ISO technicalcommittees. Each member body interested in a subject for which a technical committee has been established hasthe right to be repr

7、esented on that committee. International organizations, governmental and non-governmental, inliaison with ISO, also take part in the work. ISO collaborates closely with the International ElectrotechnicalCommission (IEC) on all matters of electrotechnical standardization.International Standards are d

8、rafted in accordance with the rules given in the ISO/IEC Directives, Part 3.Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote

9、.International Standard ISO 12149 was prepared by Technical Committee ISO/TC 153, Valves, Subcommittee SC 1,Design, manufacture, marking and testing.Annex A of this International Standard is given for information only.Copyright International Organization for Standardization Provided by IHS under lic

10、ense with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 12149:1999(E) ISOivIntroductionThe intent of this International Standard is the establishment of the basic requirements and recommendations forflanged, threaded, socket-welding or butt-welding end ste

11、el globe valves of bolted bonnet construction for general-purpose applications.To maintain compatibility with ISO 7005-1, in which the American flanges previously designated by a class ratinghave been converted to nominal pressure (PN) ratings, this International Standard follows the same system. Th

12、eequivalent ratings are as follows: Class 150: PN 20; Class 300: PN 50; Class 600: PN 110.Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-INTERNATIONAL STANDARD ISO ISO 1

13、2149:1999(E)1Bolted bonnet steel globe valves for general-purpose applications1 ScopeThis International Standard specifies the requirements for bolted bonnet steel globe valves for general-purposeapplications and having the following features: bolted bonnets; flanged, threaded, socket-welding (DN 65

14、 and smaller) or butt-welding ends; outside screw and yoke, inside screw and rising stem; with metallic or soft obturator (disc, piston) or seat seals.It covers valves of the following nominal sizes, DN: 10; 15; 20; 25; 32; 40; 50; 65; 80; 100; 125; 150; 200; 250; 300; 350; 400;and applies to valves

15、 of the following nominal pressures, PN: 10; 16; 20; 25; 40; 50; 110.2 Normative referencesThe following normative documents contain provisions which, through reference in this text, constitute provisions ofthis International Standard. For dated references, subsequent amendments to, or revisions of,

16、 any of thesepublications do not apply. However, parties to agreements based on this International Standard are encouraged toinvestigate the possibility of applying the most recent editions of the normative documents indicated below. Forundated references, the latest edition of the normative documen

17、t referred to applies. Members of ISO and IECmaintain registers of currently valid International Standards.ISO 7-1:1994, Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, tolerancesand designation.ISO 7-2:1982, Pipe threads where pressure-tight joints are made on t

18、he threads Part 2: Verification by means oflimit gauges.ISO 261:1998, ISO general-purpose metric screw threads General plan.ISO 263:1973, ISO inch screw threads General plan and selection for screws, bolts and nuts Diameterrange 0.06 to 6 in.ISO 4200, Plain end steel tubes, welded and seamless Gener

19、al tables of dimensions and masses per unit length.ISO 5208, Industrial valves Pressure testing for valves.ISO 5209, General purpose industrial valves Marking.ISO 5210, Industrial valves Multi-turn valve actuator attachments.Copyright International Organization for Standardization Provided by IHS un

20、der license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 12149:1999(E) ISO2ISO 5752:1982, Metal valves for use in flanged pipe systems Face-to-face and centre-to-face dimensions.ISO 6708, Pipework components Definition and selection of DN (nominal si

21、ze).ISO 7005-1, Metallic flanges Part 1: Steel flanges.ISO 7268, Pipe components Definition of nominal pressure.ANSI/ASME B1.20.1:1983 (R1992), Pipe threads, General purpose (inch).ANSI/ASME B16.11:1991, Forged fittings Socket Welding and threaded.ANSI/ASME B16.34:1996, Valves Flanged, threaded and

22、welding end.3 Terms and definitionsFor the purposes of this International Standard, the definitions of nominal size (DN) and nominal pressure (PN)given in ISO 6708 and ISO 7268, respectively, apply.4 Pressure/temperature ratings4.1 The pressure/temperature ratings applicable to valves specified in t

23、his International Standard shall be inaccordance with those specified in ISO 7005-1 for steel flanges of the applicable PN and material specification.Restrictions on temperature or pressure, for example those imposed by soft seals and special trim materials, shallbe indicated on the valve identifica

24、tion plate (see 8.4.2).4.2 The temperature shown in a particular pressure/temperature rating is the maximum temperature of thepressure-containing shell of the valve. In general, this temperature is the same as that of the fluid contained. Use ofa pressure rating corresponding to a temperature other

25、than that of the fluid contained is the responsibility of theuser.4.3 For temperatures below the lowest temperature shown in the pressure/temperature rating tables inISO 7005-1, the service pressure shall be no greater than the rating shown for that lowest temperature. The use ofvalves at lower temp

26、eratures is the responsibility of the user. Consideration should be given to the loss of ductilityand impact strength of many materials at low temperature.5 Design5.1 Body wall thickness5.1.1 A schematic diagram of a valve body is shown in Figure 1. The minimum wall thickness tmat the time ofmanufac

27、ture shall be as given in Table 1 except as indicated in 5.1.2, 5.1.3, and 5.1.4.Additional metal thickness needed for assembly stresses, closing stresses, stress concentrations and shapes otherthan circular shall be determined by individual manufacturers, since these factors vary widely.5.1.2 The w

28、eld preparation in butt-welding end valves (see 5.2.2.2) shall not reduce the body wall thickness to lessthan the values required by 5.1.1 within a region closer to the outside surface of the body neck than tmmeasuredalong the run direction. The transition to the weld preparation shall be gradual an

29、d the section shall be essentiallycircular through the entire length of the transition. Sharp discontinuities or abrupt changes in section in areas thatinfringe into the transition shall be avoided, except that test collars or bands, either welded or integral, are allowed.In no case shall the thickn

30、ess be less that 0,77tmat a distance of 1,33tmfrom the weld end.Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,- ISOISO 12149:1999(E)35.1.3 The valve body neck shall main

31、tain the minimum wall thickness tmas required by 5.1.1 within the distance of11, dtmmeasured from outside of the body run along the neck direction, where d is the nominal inside diameter asdefined in 5.2.1.4.Beyond the distance 11, dtmfrom the outside of the body run, straight circular sections of b

32、ody necks with insidediameter d shall be provided with a local wall thickness at least equal to t where t is determined, by interpolation ifnecessary, as the value of tmwhich would correspond to a value of d equal to 2d/3, using the applicable ISO PN(nominal pressure) rating.It will be noted that, f

33、or any case where d 1,5d, the newly determined minimum wall thickness for the body neckwill be greater than the basic value tm. In such cases, this greater wall thickness shall be provided for all of the bodyneck having a diameter greater than 1,5d.5.1.4 Local areas having less than the minimum wall

34、 thickness will be acceptable, provided that all of the followinglimitations are satisfied:a) the area of sub-minimum thickness can be enclosed by a circle whose diameter is no greater than 035, dtm,where d is the nominal inside diameter as given in Table 2 and tmis the minimum body wall thickness a

35、s shownin Table 1;b) the measured thickness is no less than 0,75tm;c) enclosure circles are separated from each other by an edge-to-edge distance of no less than 175, dtm.Key1 Junction of body run and body neck 5 Bonnet flange2 Body end flange 6 Body neck3 Body end port inside diameter 7 Axis of bod

36、y run4 Axis of body neck 8 Body runFigure 1 Identification of termsCopyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 12149:1999(E) ISO4Table 1 Body wall thicknessNomina

37、lsizeNominal pressure PNDN a10 16 20 25 40 50 110Minimum body wall thickness, tmmm103333333,31533333,13,13,420 3 3 3,1 3,3 3,5 3,8 4,125 4 4 4,1 4,2 4,6 4,8 4,832 4,5 4,5 4,8 4,8 4,8 4,8 4,840 4,5 4,5 4,8 4,8 4,8 4,8 5,650 5 5,5 5,6 5,7 6,1 6,4 6,465 5 5,5 5,6 5,8 6,6 6,4 7,180 5 5,5 5,6 5,8 6,6 7,1

38、 7,9100 6 6 6,4 6,6 7,3 7,8 9,6125 6,3 6,5 7,1 7,2 8,1 9,6 11,2150 6,5 7 7,1 7,5 8,8 9,6 12,7200 7 8 8,1 8,6 10,2 11,2 15,8250 7,5 8,5 8,6 9,3 11,4 12,7 19300 8,5 9,5 9,6 10,4 12,7 14,2 23,1350 9 10 10,4 11,3 14 15,8 24,6400 9,6 11 11,2 12,7 15,4 17,5 27,7aFor the corresponding body end port nominal

39、 inside diameter, see Table 2.5.2 Body dimensions5.2.1 Flanges5.2.1.1 Face-to-face dimensions for flanged end valves shall be in accordance with Table 8 of ISO 5752:1982 forstraight pattern and Table 9 for angle pattern.5.2.1.2 Body end flanges shall comply with the requirements of ISO 7005-1.5.2.1.

40、3 End flanges shall be cast or forged integral with the body except that flanges may be attached by weldingby a qualified welding operator using a qualified welding procedure, provided that all such flanges on valves DN 50and larger shall be butt-welded. Any heat treatment necessary to ensure that t

41、he material is suitable for the fullrange of service temperatures shall be performed.5.2.1.4 For unlined flanged valves, the nominal inside diameter d of the body end port shall be as specified inTable 2 as applicable.Copyright International Organization for Standardization Provided by IHS under lic

42、ense with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,- ISOISO 12149:1999(E)5Table 2 Body end port nominal inside diameter, dPNDN 10; 16; 20; 25 40; 50 110dmm10 10 10 1015 13 13 1320 19 19 1925 25 25 2532 32 32 3240 38 38 3850 50 50 5065 64 64 6480 76 76 7610

43、0 100 100 100125 125 125 125150 150 150 150200 200 200 200250 250 250 250300 300 300 300350 335 335 325400 385 385 3755.2.2 Butt-welding ends5.2.2.1 End-to-end dimensions for butt-welding end valves shall be in accordance with Table 8 of ISO 5752:1982for straight pattern and Table 9 for angle patter

44、n.5.2.2.2 Butt-welding ends shall be in accordance with the details shown in Figure 2, unless otherwise specified inthe purchase order.5.2.3 Threaded and socket-welding ends5.2.3.1 End-to-end dimensions for threaded and socket-welding end valves shall be the manufacturers standard.5.2.3.2 Valve body

45、 threads shall be taper or parallel threads in accordance with ISO 7-1 or taper threads inaccordance with ANSI/ASME B1.20.1 as appropriate.5.2.3.3 Threads shall be gauged in accordance with ISO 7-2 or taper threads in accordance withANSI/ASME B1.20.1, as appropriate.5.2.3.4 Socket-welding end dimens

46、ions shall be in accordance with Table 3.Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 12149:1999(E) ISO6Table 3 Socket bore and depthDN Socket boremm 0,3Socket dep

47、thmmmin.10 17,8 915 22,0 1020 27,3 1325 34,1 1332 42,8 1340 48,9 1350 61,4 1665 74,1 16NOTE These dimensions are equal to those in ANSI/ASMEB16,11 for socket-welding ends and similar to those inISO 7005-1 for socket-welding flanges.Copyright International Organization for Standardization Provided by

48、 IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,- ISOISO 12149:1999(E)7a) Welding end for connection to pipe of wallthickness T 22 mmb) Welding end for connection to pipe of wallthickness T . 22 mmA = Nominal outside diameter of welding en

49、dB = Nominal inside diameter of pipeT = Nominal wall thickness of pipeNominal size, DN 25 32 40 50 65 80 100 125 150 200 250 300 350 400nom. 35 44 50 62 78 91 117 144 172 223 278 329 362 413A mmtol.-+1025,-+14B mm tol.-+11-+22NOTE 1 Dotted lines denote the maximum envelope for transitions from the we