1、AN AMERICAN NATIONAL STANDARDCast Copper Alloy Fittings for Flared Copper TubesASME B16.26-2011(Revision of ASME B16.26-2006)Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright ASME Internat
2、ional Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME B16.26-2011(Revision of ASME B16.26-2006)Cast CopperAlloy Fittings forFlared CopperTubesAN AMERICAN NATIONAL STANDARDThree Park Avenue New York, NY 10016 USACopyright
3、 ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Date of Issuance: October 7, 2011The next edition of this Standard is scheduled for publication in 2016.ASME issues written replies to inquiries concerning i
4、nterpretations of technical aspects of thisStandard. Periodically certain actions of the ASME B16 Committee may be published as Cases.Cases and interpretations are published on the ASME Web site under the Committee Pages athttp:/cstools.asme.org as they are issued and will be published within the ne
5、xt edition of thestandard.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under procedures accredited as meeting the criteria for American NationalStandards. The Standards Committee that approved the code or standard was balanced t
6、o 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 that provides an opportunity for additional public input from industry, academia,regulatory agencies, and the public-a
7、t-large.ASME does not “approve,” “rate,” or “endorse” any item, construction, proprietary device, or activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with anyitems mentioned in this document, and does not undertake to insure anyone uti
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10、edASME procedures and policies, which precludes the issuance of interpretations by individuals.No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersThree
11、 Park Avenue, New York, NY 10016-5990Copyright 2011 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-CONTENTSForewo
12、rd ivCommittee Roster . vCorrespondence With the B16 Committee viSummary of Changes vii1 Scope . 12 General . 13 Pressure Rating 14 Size. 15 Marking . 16 Material . 17 Dimensions 18 Threading . 29 Hydrostatic Test . 2Tables1 General Dimensions Cast Copper Alloy Fittings for Flared Copper Tubes 32 Th
13、read Specifications: External Threads on Fittings Class 2A 43 Thread Specifications: Internal Threads on Nuts Class 2B . 4Mandatory AppendicesI U.S. Customary Units . 5II References 7Nonmandatory AppendicesA Flared Tube Dimensions 8B Quality System Program 9iiiCopyright ASME International Provided b
14、y IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-FOREWORDThe development of a standard for brass fittings for flared copper water tubes was initiatedby a subcommittee of the Copper Tube and Fitting Manufacturers Standardization Committe
15、ein 1929. When a general agreement had been reached, the draft of the proposed standard wassubmitted to Sectional Committee A40 on Minimum Requirements for Plumbing andStandardization of Plumbing Equipment, of the American Standards Association (ASA). SectionalCommittee A40 was jointly sponsored by
16、the American Society of Sanitary Engineering and TheAmerican Society of Mechanical Engineers (ASME).Final ASA approval and designation as an American Standard, ASA A40.2-1936, was grantedJanuary 20, 1936.The Standard remained unchanged and without reaffirmation until 1955 when this activitywas trans
17、ferred from Sectional Committee A40 to Sectional Committee B16 on Standardizationof Pipe Flanges and Fittings, under the sponsorship of ASME, the Mechanical ContractorsAssociation of America, Inc., and the Manufacturers Standardization Society of the Valve andFittings Industry.Subcommittee No. 9 B16
18、 on Solder-Joint Fittings was instructed to develop a revised standard.The revised draft of this Standard was submitted to industry for criticism and comment. Thefinal draft was approved by Sectional Committee B16 and its sponsors by letter ballot.ASA approval and designation as ASA B16.26-1958 was
19、granted on February 12, 1958. Beginningin 1965, consideration was given to reviewing the Standard in light of progress made in theproduction of these fittings. Subcommittee No. 9 completed its work by recommending theupdating of referenced standards and thread specifications and including additional
20、 material.Following approval by the USA Standards Committee and Sponsors, the revision was approvedby the new USA Standards Institute on April 21, 1967.In 1982, American National Standards Committee B16 was reorganized as an ASME Committeeoperating under procedures accredited by the American Nationa
21、l Standards Institute (ANSI). Inthe 1988 edition, metric units were omitted, and references to other standards were updated.Following approval by the B16 Main Committee and the ASME Supervisory Board, and afterpublic review, the Standard was approved as an American National Standard by ANSI onAugust
22、 23, 1988.In the 2006 edition, metric units became the primary reference units while U.S. Customaryunits were maintained in either parenthetical or separate forms. SI values were positioned in themain text; U.S. Customary values were positioned in Mandatory Appendix I. The Scope wasclarified, and a
23、section on hydrostatic testing was added, along with a quality assurance recom-mendation in Nonmandatory Appendix B. Additional information concerning the design of thetube flare was also incorporated, in answer to user requests for such information, and wasreported in Nonmandatory Appendix A. Follo
24、wing approval by the B16 Main Committee andthe ASME Supervisory Board, and after public review, the Standard was approved as an AmericanNational Standard by ANSI on May 23, 2006.In this edition, references to ASME standards were revised to no longer list specific edition years;the latest editionof A
25、SME publications appliesunless stated otherwise. Materialsmanufactured toother editions of the referenced ASTM standards have been permitted to be used to manufacturefittings meeting the requirements of this Standard as long as the fitting manufacturer verifiesthematerial meetstherequirements ofthe
26、referencededition.Following approvalbythe StandardsCommittee and the ASME Board on PTCS, this revision to the 2006 edition was approved as anAmerican National Standard by ANSI on August 9, 2011 with the new designation,ASME B16.26-2011.Requests for interpretations or suggestions for revisions should
27、 be sent to the Secretary,B16 Committee, The American Society of Mechanical Engineers, Three Park Avenue, New York,NY 10016-5990.ivCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME B16 COMMITTE
28、EStandardization of Valves, Flanges, Fittings, and Gaskets(The following is the roster of the Committee at the time of approval of this Standard.)STANDARDS COMMITTEE OFFICERSW. B. Bedesem, ChairG. A. Jolly, Vice ChairD. R. Sharp, SecretarySTANDARDS COMMITTEE PERSONNELA. Appleton, Alloy Stainless Pro
29、ducts Co., Inc.R. W. Barnes, Anric Enterprises, Inc.W. B. Bedesem, ConsultantR. M. Bojarczuk, ExxonMobil Research and Engineering Co.D. F. Buccicone, Elkhart Products Corp.A. M. Cheta, Royal Dutch ShellM. A. Clark, Nibco, Inc.G. A. Cuccio, Capitol Manufacturing Co.C. E. Davila, Crane EnergyD. R. Fri
30、kken, Becht Engineering Co.R. P. Griffiths, U.S. Coast GuardSUBCOMMITTEE J COPPER AND COPPER ALLOY FLANGES, FLANGED FITTINGS, AND SOLDER JOINT FITTINGSM. A. Clark, Chair, Nibco, Inc.D. F. Buccicone, Vice Chair, Elkhart Products Corp.C. E. OBrien, Secretary, The American Society of MechanicalEngineer
31、sJ. A. Ballanco, JB Engineering and Code Consulting, P.C.S. L. Cavanaugh, Cavanaugh ConsultingA. Ciechanowski, NSF InternationalvG. A. Jolly, Vogt Valves/Flowserve Corp.M. Katcher, Haynes InternationalW. N. McLean, B however, they shouldnot contain proprietary names or information.Requests that are
32、not in this format will be rewritten in this format by the Committee priorto being answered, which may inadvertently change the intent of the original request.ASME procedures provide for reconsideration of any interpretation when or if additionalinformation that might affect an interpretation is ava
33、ilable. Further, persons aggrieved by aninterpretation may appeal to the cognizant ASME Committee or Subcommittee. ASME does not“approve,” “certify,” “rate,” or “endorse” any item, construction, proprietary device, or activity.Attending Committee Meetings. The B16 Standards Committee regularly holds
34、 meetings, whichare open to the public. Persons wishing to attend any meeting should contact the Secretary ofthe B16 Standards Committee.viCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME B16.
35、26-2011SUMMARY OF CHANGESFollowing approval by the ASME B16 Committee and ASME, and after public review,ASME B16.26-2011 was approved by the American National Standards Institute on August 9, 2011.ASME B16.26-2011 includes the following change identified by a margin note, (11). In addition,in the ma
36、in text, the “General” section was moved to section 2, and subsequent sections andtheir paragraphs were renumbered accordingly.Page Location Change7 Mandatory Appendix II UpdatedviiCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permit
37、ted without license from IHS-,-,-INTENTIONALLY LEFT BLANKviiiCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME B16.26-2011CAST COPPER ALLOY FITTINGS FOR FLARED COPPER TUBES1 SCOPEThis Standard
38、establishes specifications for cast cop-per alloy fittings and nuts used with flared seamlesscopper tube conforming to ASTM B88 (water and gen-eral plumbing systems). Included are requirements forthe following:(a) pressure rating(b) size(c) marking(d) material(e) dimensions(f) threading(g) hydrostat
39、ic testing2 GENERAL2.1 ReferencesCodes,standards,andspecificationscontainingprovi-sions to the extent referenced herein constitute require-ments of this Standard. These reference documents arelisted in Mandatory Appendix II.2.2 ConventionFor determining conformance with this Standard, theconvention
40、for fixing significant digits where limits(maximum and minimum values) are specified shall beas defined in ASTM E29. This requires that an observedor calculated value be rounded off to the nearest unitin the last right-hand digit used for expressing the limit.Decimal values and tolerances do not imp
41、ly a particularmethod of measurement.2.3 Relevant UnitsThis Standard states values in both SI (Metric) andU.S. Customary units. These systems of units are to beregarded separately as standard. Within the text, theU.S. Customary units are shown in parentheses or inseparate tables that appear in Manda
42、tory Appendix I.The values stated in each system are not exact equiva-lents; therefore, it is required that each system of unitsbe used independently of the other. Combining valuesfrom the two systems constitutes nonconformance withthe Standard.2.4 Quality SystemsRequirements relating to the product
43、 manufacturersquality system programs are described inNonmandatory Appendix B.12.5 Service ConditionsCriteria for selection of materials suitable for particu-lar fluidservice are notwithin the scope ofthis Standard.3 PRESSURE RATINGThe fittings covered by this Standard are designed fora maximum cold
44、-water service pressure of1 200 kPa (175 psig).4 SIZEThe sizes of the fittings shown in Table 1 (Table I-1)correspond to standard water tube size as defined inASTM B88.5 MARKINGEach fitting shall be marked with the manufacturersname or trademark and other applicable markings asrequired by MSS SP-25.
45、 Marking of fittings less thannominal size12is optional.6 MATERIALCastings shall be copper alloy produced to meet thefollowing:(a) the requirements of ASTM B62 UNS alloyC83600 or(b) the chemical and tensile requirements of ASTMB584 UNS alloy C83800 or C84400 and in all otherrespects shall complywith
46、 the requirement ofASTM B627 DIMENSIONS7.1 Fitting and NutThe dimensions and tolerances of fittings and nutsshall be as shown in Table 1 (Table I-1). Design of thesealing surfaces of the fitting and nut shall be at thediscretion of the manufacturer.7.2 Tube FlareDimensions relating to the flared end
47、 of the tube aredescribed in Nonmandatory Appendix A. SI units areshowninTable A-1,andU.S.Customary unitsareshownin Table A-2.Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME B16.26-20118 THRE
48、ADINGStraight threads shall conform to ASME B1.1 Class 2Aexternal and Class 2B internal. The dimensions ofstraight threads are given in Tables 2 and 3(Tables I-2 and I-3).Taper pipe threads (NPT) shall conform toANSI/ASME B1.20.1.9 HYDROSTATIC TESTHydrostatic testing is not required.2Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME B16.26-2011Table 1 General Dimensions Cast Copper Alloy Fittings for Flared Copper TubesAHATLBBBGCCD45-deg elbowCorner
