1、AN AMERICAN NATIONAL STANDARD ASME B16.14-2013(Revision of ASME B16.14-2010)Ferrous Pipe Plugs, Bushings, and Locknuts With Pipe ThreadsASME B16.14-2013(Revision of ASME B16.14-2010)Ferrous Pipe Plugs,Bushings, andLocknuts With PipeThreadsAN AMERICAN NATIONAL STANDARDTwo Park Avenue New York, NY 100
2、16 USADate of Issuance: November 15, 2013The next edition of this Standard is scheduled for publication in 2018.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 athtt
3、p:/cstools.asme.org/ as they are issued.Errata to codes and standards may be posted on the ASME Web site under the Committee Pages toprovide corrections to incorrectly published items, or to correct typographical or grammatical errorsin codes and standards. Such errata shall be used on the date post
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5、nformation” section.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 to assu
6、re 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-at-larg
7、e.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 utilizing
8、 a standard against liability forinfringement of any applicable letters patent, nor assumes any such liability. Users of a code or standard are expresslyadvised that determination of the validity of any such patent rights, and the risk of infringement of such rights, isentirely their own responsibil
9、ity.Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interpreted asgovernment or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the establishedASME
10、 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 EngineersTwo Park Av
11、enue, New York, NY 10016-5990Copyright 2013 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword ivCommittee Roster . viCorrespondence With the B16 Committee viiSummary of Changes viii1 Scope 12 General. 13 PressureTemperature Ratings . 14 Nominal Pipe S
12、ize. 15 Marking 26 Materials . 27 Dimensions and Tolerances 28 Threads 29 Pattern Taper . 2Tables1 Dimensions of Square Head Plugs 32 Dimensions of Bar or Slotted Head Plugs . 43 Dimensions of Countersunk Plugs 44 Dimensions of Outside Head, Inside Head, and Face Bushings 55 Dimensions of Locknuts .
13、 7Mandatory AppendicesI Dimensions of Fittings in U.S. Customary Units 9II References . 15Nonmandatory AppendixA Quality System Program . 16iiiFOREWORDIn 1921, the American Engineering Standards Committee later the American StandardsAssociation (ASA) organized Sectional Committee B16 to unify and de
14、velop standards for pipeflanges and fittings. Cosponsors of the B16 Committee were The American Society of MechanicalEngineers (ASME), the Heating and Piping Contractors National Association now MechanicalContractors Association of America (MCAA), and the Manufacturers Standardization Societyof the
15、Valve and Fitting Industry (MSS). Cosponsors were later designated as Co-Secretariatorganizations.Threaded fittings were also included in the scope of the B16 Committee, and Subcommittee 2(now Subcommittee B) was made responsible for threaded fittings other than steel.The American Standard for Pipe
16、Plugs was originally published as ASA B16e2-1936. It hadbeen developed by Subcommittee 2 from material assembled and published by MSS as a standardpractice in April 1929.From the beginning, pipe plugs have been made with the American Standard Taper Pipe Threadbut the design of the square heads neces
17、sary to screw them into fittings or any tapped hole hasbeen a matter of manufacturers and users individual design. However, the use of pipe plugs soonbroadened, and they came to be employed in many other service applications, e.g., automotive andindustrial machinery. Accordingly, it was natural for
18、the dimensions of the square heads and thesockets to conform to standard open wrench sizes and to maximum dimensions of standard hot-rolled steel bars.Pipe bushing and locknut dimensions were originally included in ASA B16c-1939, AmericanStandard for 150 lb Malleable Iron Screwed Fittings. ASA B16c-
19、1939 was adapted from informationassembled and published by MSS in 1929.In response to a demand for inclusion under one cover, B16.14-1943, American Standardfor Ferrous Plugs, Bushings, Locknuts, and Caps, was developed from ASA B16c-1939 andASA B16d-1941, American Standard for Cast Iron Screwed Fit
20、tings, 125 lb and 250 lb, andapproved by ASA in October 1943. The section of B16.14 covering pipe caps was later removedbecause of differences in pressure ratings between caps made of cast iron and malleable iron.This Standard was revised in 1948 and was approved by letter ballot vote of the Section
21、alCommittee and, following the approval of the sponsor bodies, it was presented to ASA, now theAmerican National Standards Institute (ANSI), with recommendations for approval as anAmerican Standard. This approval and designation was given on April 6, 1949.Subcommittee 2 began a review of the documen
22、t in 1963 and completed its work in 1964. TheSectional Committee approved a number of minor changes in format and wording. Followingapproval by the sponsor organizations, ANSI approval was granted on November 12, 1965.In 1970, a review was initiated by Subcommittee 2 that resulted in the proposal to
23、 revise thedocument in several minor areas and update referenced standards. Following approvals by theStandards Committee and Co-Secretariat, ANSI granted approval on November 1, 1971.In 1975, review was again initiated by Subcommittee B (formerly Subcommittee 2), and it wasdetermined that the only
24、significant changes needed were the updating of referenced standardsand the addition of metric equivalents. Approvals were granted by the Standards Committee,Co-Secretariat, and ANSI, the latter on February 4, 1977.In 1982, the American National Standards Committee was reorganized as an ASME Committ
25、eeoperating under procedures accredited by ANSI. That same year, Subcommittee B once againbegan review of the Standard. The only changes made were the dates of the referenced standards.After approval by the Standards Committee and ASME, final approval was granted by ANSI inJuly 1983.In the 1991 edit
26、ion of B16.14, U.S. customary units were established as the standard and updateswere made to the referenced standards and minimum specifications for steel fittings. Followingapproval by the Standards Committee and ASME, approval as an American National Standardwas given by ANSI on January 4, 1991, w
27、ith the new designation ASME B16.14-1991.ivIn the 2010 edition of B16.14, metric dimensions became the primary units, and inch dimensionswere incorporated into the Standard as secondary units and shown in parentheses. Followingapproval by the Standards Committee and the ASME Board, the revision to t
28、he 1991 edition ofthe Standard was approved as an American National Standard by ANSI on April 1, 2010, anddesignated as ASME B16.14-2010.In this 2013 edition, section 8 was revised and now requires threads and gaging practices tobe as per, and identical with, ASME B1.20.1 and other B16 standards. Fo
29、llowing approval by theASME B16 Standards Committee, approval as an American National Standard was given byANSI on July 29, 2013, with the new designation ASME B16.14-2013.vASME B16 COMMITTEEStandardization of Valves, Flanges, Fittings, and Gaskets(The following is the roster of the Committee at the
30、 time of approval of this Standard.)STANDARDS COMMITTEE OFFICERSW. Bedesem, ChairG. A. Jolly, Vice ChairC. E. OBrien, SecretarySTANDARDS COMMITTEE PERSONNELA. Appleton, Alloy Stainless Products Co., Inc.R. Barnes, Anric Enterprises, Inc.W. Bedesem, ConsultantR. M. Bojarczuk, ExxonMobil Research howe
31、ver, they shouldnot contain proprietary names or information.Requests that 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 interpretat
32、ion when or if additionalinformation that might affect an interpretation 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 act
33、ivity.Attending Committee Meetings. The B16 Standards Committee regularly holds meetings thatare open to the public. Persons wishing to attend any meeting should contact the Secretary ofthe B16 Standards Committee.viiASME B16.14-2013SUMMARY OF CHANGESFollowing approval by the B16 Committee and ASME,
34、 and after public review, ASME B16.14-2013was approved by the American National Standards Institute on July 29, 2013.ASME B16.14-2013 includes editorial changes, revisions, and corrections, which are identified bya margin designator, (13), placed next to the affected area.Page Location Change2 8 Rev
35、isedviiiASME B16.14-2013FERROUS PIPE PLUGS, BUSHINGS, AND LOCKNUTSWITH PIPE THREADS1 SCOPEThis Standard covers the following:(a) pressuretemperature ratings(b) size(c) marking(d) materials(e) dimensions and tolerances(f) threading(g) pattern taper2 GENERAL2.1 ReferencesStandards and specifications a
36、dopted by reference areshown in Mandatory Appendix II. It is not consideredpractical to identify the edition of each referenced stan-dard and specification in the text. Instead, the editionsof the referenced standards and specifications are listedin Mandatory Appendix II.2.2 Quality SystemsRequireme
37、nts relating to the product manufacturersquality system programs are described inNonmandatory Appendix A.2.3 Relevant UnitsThis Standard states values in both SI (Metric) unitsand U.S. Customary units. These systems of units areto be regarded separately as standard. Within the text,the U.S. Customar
38、y units are shown in parentheses orin separate tables that appear in Mandatory 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 nonconformanc
39、e withthe Standard.2.4 Service ConditionsCriteria for selection of materials suitable for particu-lar fluid service are not within the scope of this Standard.2.5 ConventionFor determining conformance with this Standard, theconvention for fixing significant digits where limits(maximum and minimum val
40、ues) are specified shall be1as 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 particularmethod of measurement.2.6 Denotation2.6.1 Pressure
41、 Rating Designation. Class followedby a dimensionless number is the designation forpressuretemperature ratings.2.6.2 Size. Nominal pipe size (NPS) followed by adimensionless number is the designation for nominalflange or flange fitting size. NPS is related to the refer-ence nominal diameter, DN, use
42、d in international stan-dards. The relationship is, typically, as follows:NPS DN12511432112402502126538312904 100For NPS 4, the related DN p 25 H11547 (NPS)3 PRESSURETEMPERATURE RATINGS(a) Pressuretemperature ratings for plugs and bush-ings shall be in accordance with ASME B16.4 if madeof cast iron,
43、 or ASME B16.3 if made of malleable iron,ductile iron, or steel. Use of cored plugs or hexagonhead bushings should be limited to Class 125 cast ironand Class 150 malleable iron threaded fittings. Solidplugs and face bushings are recommended for use withClass 250 cast iron fittings and Class 300 mall
44、eable ironfittings.(b) Locknuts are not pressuretemperature rated.4 NOMINAL PIPE SIZEAs applied in this Standard, the use of the phrase“nominal pipe size” or the designation NPS followedby a dimensionless number is for identifying the endconnection of fittings. The number is not necessarily thesame
45、as the fitting inside diameter.(13)ASME B16.14-20135 MARKINGEach fitting shall be marked for identification withthe manufacturers name or trademark, except where amarking is impractical.6 MATERIALS(a) These fittings are furnished in gray iron, malleableiron, ductile iron, or steel as indicated in th
46、e individualtables.(b) The chemical and mechanical properties of castmaterial shall equal or exceed those properties listed inASTM A126, as applicable. Steel castings, forgings, ormachined bar properties shall correspond to the compa-rable ASTM casting material specifications. The fittingsmanufactur
47、er shall be prepared to certify conformancebased on test data.7 DIMENSIONS AND TOLERANCES(a) Dimensions in metric units are given in Tables 1through 5 for various types of fittings. CorrespondingU.S. Customary values are given in Tables I-1 throughI-5 in Mandatory Appendix I.(b) At no point in the c
48、omponent wall shall the metalthickness be less than 90% of the values listed in thetables.8 THREADS8.1 Thread FormAll threads shall be in accordance with ASME B1.20.1.8.1.1 Countersinks and Chamfers. All internal taperpipe threads shall be countersunk or chamfered a dis-tance of not less than one-ha
49、lf the pitch of the threadat an angle of approximately 45 deg with the axis of thethread. External taper pipe threads shall be chamferedat an angle between 30 deg and 45 deg with the axis,2for easier entrance in making a joint and protection ofthe thread. Countersinking and chamfering shall be con-centric with the threads. The length of threads specifiedin all tables shall be measured to include the countersinkor chamfer.8.1.2 Alignment. The maximum allowable variationin the alignment of threads of all openings shall be5.0 mm/m (0.06 in./ft).8.1.3 Internal Threadin
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