1、AN AMERICAN NATIONAL STANDARDCopper and Copper Alloy Press-Connect Pressure FittingsASME B16.51-2011Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright ASME International Provided by IHS und
2、er license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME B16.51-2011Copper andCopper AlloyPress-ConnectPressure FittingsAN AMERICAN NATIONAL STANDARDThree Park Avenue New York, NY 10016 USACopyright ASME International Provided by IHS under license
3、with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Date of Issuance: January 31, 2012The next edition of this Standard is scheduled for publication in 2016.ASME issues written replies to inquiries concerning interpretations of technical aspects of thisStanda
4、rd. 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 next edition of thestandard.Errata to codes and s
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7、merican 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 to assure that individuals fromcompetent and concerned interests hav
8、e 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-at-large.ASME does not “approve,” “rate,” or “endorse” any item, con
9、struction, 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 utilizing a standard against liability forinfringement of any applicab
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13、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-,-,-CONTENTSForeword ivCommittee Roster . vCorrespondence With the B16 Committee vi1
14、Scope . 12 General . 13 Terminology . 14 Size. 15 Marking . 26 Material . 27 Laying Lengths 28 Tube Stops 29 Design 210 Threaded Ends. 311 Alignment . 312 Gaging 313 Installation Instructions 314 Design Qualification . 4Figures1 Method of Designating Laying Lengths of Fittings and Openings of Reduci
15、ngFittings 62 Tube Stops . 83 Alignment 84 Test Setup for Pressure Test . 85 Test Setup for Static Torque Test 96 Test Setup for Bending Test . 97 Test Setup for Vibration Test 108 Test Setup for Thermocycling Test . 109 Test Setup for Dynamic Torque Test . 11Tables1 Dimensions of Press-Connect Ends
16、 122 Maximum Slippage . 133 Torque . 134 Concentrated Load . 13Mandatory AppendicesI U.S. Customary Equivalents . 15II References 18Nonmandatory AppendixA Quality System Program 19iiiCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking perm
17、itted without license from IHS-,-,-FOREWORDStandardization of cast and wrought press-connect pressure fittings was initiated inSubcommittee J of the ASME B16 Committee in 2000. The first draft of the Standard was basedon International Association of Plumbing and Mechanical Officials (IAPMO) Interim
18、GuideCriteria IGC 137-2000. The general requirements of ASME B16.22-2000 and B16.24-1998 wereadded to the first draft. The development of the Standard was necessary to regulate the strengthof the joint in copper press-connect fittings. The performance test requirements of this Standardare an importa
19、nt aspect for determining the quality of the fittings.Following approval by the Standards Committee and the ASME Board on PTCS, approval asan American National Standard was given by the American National Standards Institute onDecember 21, 2011, with the new designation ASME B16.51-2011.Requests for
20、interpretation or suggestions for revision should be sent to the Secretary,B16 Committee, ASME, 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 B1
21、6 COMMITTEEStandardization 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 Sta
22、inless Products 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 Energ
23、yD. R. Frikken, 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 Mechanic
24、alEngineersJ. A. Ballanco, JB Engineering and Code Consulting, PCS. 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 t
25、hat are 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 interpretatio
26、n is available. 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 regular
27、ly holds 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-,-,-A
28、SME B16.51-2011COPPER AND COPPER ALLOYPRESS-CONNECT PRESSURE FITTINGS1 SCOPEThisStandardestablishesrequirementsforcastcopperalloy, wrought copper, and wrought copper alloy, press-connect pressure fittings for use with hard drawn seam-less copper water tube conforming to ASTM B88 forpiping systems co
29、nveying water. The press-connect sys-tem (tube, fitting, and joint) conforming to this Standardis for use at a maximum pressure of 1 380 kPa (200 psi)over the temperature range from 0C to 93C (32F to200F).This Standard provides requirements for fittings suit-able for press-connect joining and covers
30、 the following:(a) size designations(b) pressuretemperature ratings(c) terminology(d) dimensions and tolerances(e) materials(f) design qualification(g) required installation instructions(h) markings2 GENERAL2.1 ConventionFor determining conformance with this Standard, theconvention for fixing signif
31、icant 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 imply a particularme
32、thod of measurement.2.2 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 Mandatory Appendix I.T
33、he 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.2.3 ReferencesCodes, standards, and specifications, containing pro-visio
34、ns to the extent referenced herein, constitute1requirements of this Standard. These referenced docu-ments are listed in Mandatory Appendix II.2.4 Quality SystemsRequirements relating to the product manufacturersQuality System Programs are described inNonmandatory Appendix A.3 TERMINOLOGY3.1 Abbrevia
35、tionsThe following symbols are used to designate the typeof fitting end as shown in Fig. 1:F p internal ANSI/ASME B1.20.1 taper pipe-thread end (NPTI)FTG p solder-joint fitting end made to copper tubeoutside diameterM p external ANSI/ASME B1.20.1 taper pipe-thread end (NPTE)P p internal press-connec
36、t joint end made toreceive copper tube diameter3.2 DefinitionsThis paragraph defines the terms used in thisStandard.joining, press-connect: the act of joining a fitting or pipingcomponent to a tube by use of a tool that mechanicallycompresses the wall of the fitting end over the tubing,encasing an e
37、lastomeric seal between the matingsurfaces.out-of-roundness: the maximum measured diameterminus the minimum measured diameter.press-connect fitting: a type of piping component (e.g.,coupling, tee, elbow) used to connect tubing or otheraccessories by mechanically compressing the wall of thefitting en
38、d over the tube, using an elastomeric materialto provide a seal between the inside surface of the fittingand the outside surface of the tube.4 SIZEThe size designations of the fittings shown in thetables of this Standard correspond to standard watertube size as shown in ASTM B88, Specification forSe
39、amless Copper Water Tube. The size designations ofthe threaded ends correspond to nominal pipe size asshown in ANSI/ASME B1.20.1.Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME B16.51-2011Fit
40、tings shall be designated by the size of the openingsin the sequence illustrated in Fig. 1.5 MARKINGEach fitting shall be permanently marked with themanufacturers name or trademark in accordance withMSS SP-25. Marking on fittings less than nominal size12or on any fitting where it damages joining sur
41、facesis not required.6 MATERIAL6.1 Wrought Copper Alloys(a) Fittings shall be made from copper UNS alloynumber C10200, C12000, C12200, or C23000.(b) Other coppers and copper alloys shall be permit-ted provided their chemical composition contains a min-imum of 84% copper and a maximum of 16% zinc and
42、provided the fittings produced from the copper alloymeet all the mechanical and corrosion-resistant proper-ties for the end purposes of the fittings. The compositionof the copper alloy shall not inhibit joining to the tubeor to other fittings.6.2 Cast Copper AlloysCastings shall be copper alloys pro
43、duced to meeteither of the following:(a) the requirements of ASTM B62 Alloy C83600(b) the chemical composition and tensile require-ments of ASTM B584 Alloy C83800 or C84400 and in allother respects the requirements of ASTM B626.3 Elastomers (Seals)Elastomeric componentsshall beresistant tomicrobio-l
44、ogical attack and ozone attack, and shall contain inhibi-tors to prevent copper degradation. The elastomer shallbe an ethylene propylene diene monomer (EPDM) andshall meet the minimum property and test requirements,as defined by ASTM D2000, shown in the followingtable:Material EPDMMinimum nominal du
45、rometer hardness, 605 pointsMinimum tensile strength, MPa (psi) 10 (1,450)Heat resistance A25Compression set B35Water resistance EA14Low-temperature resistance F17Tear resistance G21Special requirements Z1, Z2, Z3, Z4The special requirements shall be as follows:(a) Z1 designates compliance with NSF/
46、ANSI 61.(b) Z2 designates the compression set. The maximumcompression set shall be 45% when compressed 2.62 mm2(0.103 in.), 40% when compressed 3.53 mm (0.139 in.),and 35% when compressed 5.33 mm (0.210 in.).(c) Z3 designates chloramine resistance that is deter-mined by testing for 1 008 h at 70C (1
47、58F) perASTM D6284 a solution containing 50 ppm total chlo-rine; this shall be checked and refreshed daily. Uponcompletion of the test, the change in volume shall beless than 30%, and the change in durometer hardnessshall be a maximum of 6. There shall be no visual degra-dation of the elastomeric ma
48、terial.(d) Z4 designatesresistance of the elastomerto copperdegradation. The test shall be conducted in accordancewith para. 14.9.1 of this Standard. Upon completion ofthe test, the change in volume shall be less than 30%,and the change in durometer hardness shall be a maxi-mum of 6. There shall be
49、no visual degradation of theelastomeric material.6.4 Seal LubricantThe only seal lubricant that shall be used is that speci-fied by the manufacturer.7 LAYING LENGTHSDue to widely varying manufacturing processes,meaningful laying length requirements of fittings cannotbe established. Consult the manufacturer for thesedimensions.8 TUBE STOPSExcept
