1、AN AMERICAN NATIONAL STANDARDASME B16.34-2009(Revision of ASME B16.34-2004)ValvesFlanged, Threaded, and Welding EndCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME B16.34-2009(Revision of ASME
2、 B16.34-2004)ValvesFlanged,Threaded, andWelding EndAN AMERICAN NATIONAL STANDARDCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Date of Issuance: September 30, 2009The next edition of this Standar
3、d is scheduled for publication in 2012. There will be no addendaissued to this edition.ASME issues written replies to inquiries concerning interpretations of technical aspects of thisStandard. Interpretations are published on the ASME Web site under the Committee Pages athttp:/cstools.asme.org as th
4、ey are issued.Items approved as errata to this edition are published on the ASME Web site under the CommitteePages at http:/cstools.asme.org.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under procedures accredited as meeting the
5、 criteria for American NationalStandards. The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have had an opportunity to participate. The proposed code or standard was madeavailable for public review and comment tha
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10、 otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersThree Park Avenue, New York, NY 10016-5990Copyright 2009 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyright ASME International Provided by IHS under l
11、icense with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-CONTENTSForeword vCommittee Roster . viiCorrespondence With the B16 Committee viiiIntroduction . ix1 Scope 12 PressureTemperature Ratings . 23 Nominal Pipe Size. 44 Marking 45 Materials . 56 Dimension
12、s . 67 Pressure Testing 108 Requirements for Special Class Valves 11Figures1 Method of Designating Location of Auxiliary Connections When Specified 142 Thread Length for Auxiliary Connections . 153 Socket Welding for Auxiliary Connections 154 Butt Welding for Auxiliary Connections 155 Bosses for Aux
13、iliary Connections . 166 Gate Body (Pressure Seal Bonnet) 167 Y Pattern Globe Body (Pressure Seal Bonnet) . 178 Angle Body (Pressure Seal Bonnet): Bonnet Same as Y Pattern Globe 179 Elbow Down (Pressure Seal Bonnet) 1810 Gate Body (Flanged Bonnet) . 1811 Globe Body (Flanged Bonnet) 1912 Butterfly Bo
14、dy . 1913 Plug Body . 2014 Conduit Gate Body (Pressure Seal Bonnet) 2015 Dished Cover 2116 Flat Cover . 2117 Butterfly Valve Body . 22Tables1 Material Specification List: Applicable ASTM Specification 232 PressureTemperature Ratings 283 Valve Body Minimum Wall Thickness, tm, mm (in.) . 954 Minimum W
15、all Thickness for Socket Welding and Threaded Ends . 101Mandatory AppendicesI Radiography Examination: Procedure and Acceptance Standards 103II Magnetic Particle Examination: Procedure and Acceptance Standards 105III Liquid Penetrant Examination: Procedure and Acceptance Standards 106IV Ultrasonic E
16、xamination: Procedure and Acceptance Standards . 107V Requirements for Limited Class Valves . 108VI Basis Equations for Minimum Wall Thickness . 111VII PressureTemperature Ratings: U.S. Customary Units . 113VIII Reference Standards and Specifications . 179iiiCopyright ASME International Provided by
17、IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Nonmandatory AppendicesA Relationship Between Nominal Pipe Size and Inside Diameter 182B Method Used for Establishing PressureTemperature Ratings 184C Quality System Program . 191ivCopyrigh
18、t ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-FOREWORDIn December 1969, American National Standards Committee B16 changed its name from Stan-dardization of Pipe Flanges and Fittings to Standardization o
19、f Valves, Fittings, and Gaskets,reflecting American National Standards Institute approval of a broadened scope for the B16Committee. At the same meeting, the committee approved a plan for the organization of asubcommittee to develop a new standard for steel valves with other than flanged ends. Subse
20、-quently, B16 Subcommittee 15 was appointed and held its first meeting in December 1970.Historically, in the development of standards and pressure-temperature ratings for steel valves,the various rating classes for flanges provided an obviously logical basis for valve ratings. Steelvalves with flang
21、es of standard dimensions, many also offered in buttwelding-end versions, weregiven the same pressure-temperature ratings as the flanges. In 1949, a new edition of the standard,then designated B16e-1949, was published, in which a table covering wall thickness requirementsfor weld end valves had been
22、 added. In 1964, the Manufacturers Standardization Society of theValve and Fittings Industry developed and published Standard Practice SP 66, covering pressure-temperature ratings of steel buttwelding-end valves. SP 66 introduced a new method for establish-ing ratings by making ratings a function of
23、 the mechanical strength properties of the body materialat all temperatures. Following the publication of SP 66, B16 activated Subcommittee 4 for thepurpose of studying the general subject of pressure-temperature ratings and developing rationalcriteria for such ratings.In the B16 charge to Subcommit
24、tee 15, it was established that the new standard would replaceSP 66 and also remove the reference to buttwelding-end valves from B16.5. Flanged-end valveswould continue to be covered in B16.5 but on a fully specified basis, rather than as an add-on.As the work of the subcommittee got underway, concu
25、rrent action was initiated in Subcommittee3 for revision of B16.5. Subsequent operations of Subcommittees 3 and 15 were closely coordinatedto provide assurance that the new standard and the revised B16.5 would be compatible.A key and basic issue of mutual concern in this coordination was the matter
26、of pressure-temperature ratings. It was necessary to incorporate the SP 66-type ratings in the new standard,but at the same time also to provide ratings equivalent to those in B16.5 covering the buttweldingequivalents of flanged-end valves. Subcommittee 4 had made definitive recommendations forrevis
27、ions in the flange ratings and it was obviously desirable to rationalize the two types ofratings as they would appear side-by-side in the new standard.The results of these efforts appear herein in the form of pressure-temperature ratings tables.The method of computing the ratings is detailed in Nonm
28、andatory Appendix B. The ratingsdiffer from the pre-1968 B16.5 ratings because they are now calculated as a function of themechanical properties of the pressure boundary materials, in contrast to the empirical basis usedpreviously. A change in the SP 66-type rating (herein designated Special Class)
29、discontinues theapplication of a plasticity factor at elevated temperatures which, in the opinion of the committee,could not be justified in dimension-sensitive valves.Other innovations include the coverage of forged or fabricated body valves and an increase indetailed coverage by pressure-temperatu
30、re ratings from 17 materials in B16.5 to 24 materialgroups in the new standard and in the revised B16.5. Dimensional requirements have been refinedand augmented to give the designer more latitude and the user more assurance of adequacy. Anumber of the innovations have had trial use and at least some
31、 degree of acceptance, as theyhave been taken from the section on valve requirements developed and published by the ASMEBoiler and Pressure Vessel Code to cover valves used in nuclear power plants. A section on valvetesting eliminates uncertainties on such points as seat test requirements and stem s
32、eal testing.Approval for the 1973 edition of the Standard by the American National Standards Institutewas granted in October 1973.In December 1973, a reorganization of the subcommittee structure for B16 was approved.Subcommittee 15 was redesignated as Subcommittee N and was assigned responsibility f
33、or allsteel valves. Work began to include coverage for flanged-end valves in ANSI B16.34. The 1977vCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-edition contained flanged-end valve requirements
34、formerly in ANSI B16.5. The rating proceduresof B16.5 were adopted and made applicable to Standard Class buttwelding-end valves. Themethod of deriving ratings was revised. Major changes were made in the method for determiningratings for austenitic stainless steel valves and ratings for Class 150 val
35、ves for all materials. Thepressure-temperature tables and materials groups were rearranged and revised using data fromthe reference Sections of the ASME Boiler and Pressure Vessel Code through the Summer 1975Addenda. A number of clarifying and editorial revisions were also made in order to improveth
36、e text. It was also resolved that frequent minor changes in pressure-temperature ratings becauseof revisions to the reference material strength property tables should be avoided and that, as ageneral guide, such changes should not be considered unless resulting ratings would be changedby an amount i
37、n excess of 10%.Approval for the 1977 edition of the Standard by the American National Standards Institutewas granted on June 16, 1977.During 1979, work began on the 1981 edition. Materials coverage was expanded. Nickel alloysand other alloys were added. Bolting rules were revised to accommodate spe
38、cial alloy boltingfor the new materials. Revisions were included to clarify requirements for rotary motion valves,e.g., ball valves and butterfly valves. Wafer-type valves were specifically identified. Other clarify-ing and editorial revisions were made in order to improve the text.Following approva
39、ls by the Standards Committee and Secretariat, approval for the 1981 editionwas granted by the American National Standards Institute on August 14, 1981.During 1985, revisions were proposed that added requirements for socket welding-end andthreaded-end valves. The inclusion of requirements for these
40、valves increased the scope of theStandard. Also, the listings for nickel alloy and other alloy valves materials were expanded. Rulesfor threaded body joints were added, and wafer-type valve body rules improved.Following approvals by the Standards Committee and ASME, approval for the 1988 editionwas
41、granted by the American National Standards Institute on February 24, 1988.During 1993 and carrying over into 1994, revisions offered included multiple material markingand an improved interpolation procedure. New materials were added and the pressure-tempera-ture rating tables were recalculated in ac
42、cordance with Nonmandatory Appendix B using thelatest data available from the reference ASME Boiler and Pressure Vessel Code sources. Anappendix was added covering nonmandatory requirements for a quality system program.Following the approvals the Standards Committee and ASME, approval for the new ed
43、itionwas granted by the American National Standards Institute on October 3, 1996.Work was started during 1999 to revise the standard to include metric units as the primaryreference units while maintaining U.S. customary units in either parenthetical or separate forms.The goal is to delete the U.S. c
44、ustomary units in a future revision. All pressure-temperatureratings have been recalculated using data from the latest edition of the ASME Boiler and PressureVessel Code, Section II, Part D. As a result, some materials have been shifted to other materialgroups and some changes were made to some valv
45、e ratings within material groups. Because ofdiminished interest for flanged end valves conforming to ASME Class 400, they are not specificallylisted in this revision. Flanges for Class 400 will continue to be listed in B16 flange standards.Provisions were made to allow Class 400 valves to be furnish
46、ed as intermediate rated valves.Numerous requirement clarifications and editorial revisions were also made.Work was started during 2007 to revise the standard. Metric units remain the primary referenceunits with U.S. Customary units in either parenthetical or separate forms shown as in the earliered
47、ition. Pressure-temperature ratings, in some cases, have been revised and new materials havebeen added, all in keeping with the material properties provided in the latest edition of theASME Boiler and Pressure Vessel Code, Section II, Part D. A number of requirement clarificationsand editiorial revi
48、sions have also been made.Following the approvals of the Standards Committee and ASME, approval for the new editionwas granted by the American National Standards Institute on June 18, 2009.All requests for interpretation or suggestions for revisions should be sent to the Secretary, B16Committee, The
49、 American Society of Mechanical Engineers, Three Park Avenue, New York, NY10016-5990.viCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME B16 COMMITTEEStandardization of Valves, Flanges, Fittings, and Gaskets(The following is the roster of the Committee at the time of approval of
