1、AN AMERICAN NATIONAL STANDARD ASME B16.33-2012Revision of ASME B16.33-2002 (R2007)Manually Operated Metallic Gas Valves for Use in Gas Piping Systems Up to 175 psi (Sizes NPS Through NPS 2)ASME B16.33-2012Revision of ASME B16.33-2002 (R2007)Manually OperatedMetallic Gas Valves forUse in Gas PipingSy
2、stems Up to 175 psi(Sizes NPS Through NPS 2)AN AMERICAN NATIONAL STANDARDThree Park Avenue New York, NY 10016 USADate of Issuance: September 21, 2012The next edition of this Standard is scheduled for publication in 2017.ASME issues written replies to inquiries concerning interpretations of technical
3、 aspects of thisStandard. Periodically certain actions of the ASME B16 Committee may be published as Cases. Casesand interpretations are published on the ASME Web site under the Committee Pages athttp:/cstools.asme.org/ as they are issued.Errata to codes and standards may be posted on the ASME Web s
4、ite 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 posted.The Committee Pages can be found at http:/cstools.asme.org/. There is an option available toautoma
5、tically receive an e-mail notification when errata are posted to a particular code or standard.This option can be found on the appropriate Committee Page after selecting “Errata” in the “PublicationInformation” section.ASME is the registered trademark of The American Society of Mechanical Engineers.
6、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 have had an opportunity to participate. The
7、 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, construction, proprietary device, or activi
8、ty.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 applicable letters patent, nor assumes any such
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10、 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 procedures and policies, which precludes the issuance of interpretations by individuals.No part of t
11、his 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 Park Avenue, New York, NY 10016-5990Copyright 2012 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll right
12、s reservedPrinted in U.S.A.CONTENTSForeword ivCommittee Roster . vCorrespondence With the B16 Committee vi1 Scope . 12 Construction. 13 Materials 24 Design Qualification . 35 Production Testing . 4Figure1 Test Assembly 4Tables1 Materials for Metallic Valve Parts . 22 Torque Values 33 Bending Moment
13、Values 44 Tensile Load Values 55 Maximum Turning Torque Values . 56 Minimum Gas Flows . 5Mandatory AppendixI References 7Nonmandatory AppendixA Quality System Program 9iiiFOREWORDThe B16 Standards Committee was organized in the Spring of 1920 and held its organizationalmeeting on November 21 of that
14、 year. The group operated as a Sectional Committee (laterredesignated as a Standards Committee) under the authorization of the American EngineeringStandards Committee subsequently named American Standards Association, United States ofAmerica Standards Institute, and now, American National Standards
15、Institute (ANSI). Sponsorsfor the group were The American Society of Mechanical Engineers (ASME), ManufacturersStandardization Society of the Valve and Fittings Industry, and the Heating and Piping ContractorsNational Association (later the Mechanical Contractors Association of America).The American
16、 Gas Association (AGA) determined that standardization of gas shutoff valvesused in distribution services was desirable and needed. The AGA Task Committee on Standardsfor Valves and Shut-Offs was formed, and development work commenced in 1958. In 1968, itwas determined that a more acceptable documen
17、t would result if approval were gained fromANSI and to facilitate such action, the AGA Committee became Subcommittee No. 13 of the B16activity.This Standard offers more performance requirements than has been customary in B16 standards.It is expected that this will permit both manufacturers and users
18、 greater latitude in producingand using products made to this Standard.Work was extremely slow as the group gradually developed the document in the desiredformat. Its efforts were successful when, on July 18, 1973, final approval was granted by ANSI.The revision incorporated some major revisions to
19、the format. In addition, the scope of thestandard was clarified so that the standard could be applicable to all manually operated metallicgas valves for use in gas piping standards up to 125 psig. The revised standard incorporatedtesting criteria for valves that could have a specific pressure rating
20、 within this pressure range.This revision was made to clarify the fact that the standard is also applicable to valves with servicedesignations other than 60 psig and 125 psig. The revision was approved on February 10, 1981.The 1990 revision deleted the sampling inspection table on the basis that the
21、 scope clearlylimited the standard to turning torque valves at the time of manufacture. This edition establishedU.S. customary units as the standard and metric equivalents were deleted.In 1982, American National Standards Committee B16 was recognized as an ASME Committeeoperating under procedures ac
22、credited by ANSI.In 2002, a new materials section was added along with several other revisions. Also incorporatedwere metric values and a nonmandatory quality system program annex. Use of these valves inhigher rated systems is outside the scope of this Standard, and is neither permitted nor prohibit
23、ed.The 2012 edition of B16.33 brings an updated scope to allow all manually operated metallicgas valves for use in gas piping standards up to 175 psig. This revision also includes revisedtesting requirements to match this increase in pressure and updates to referenced standards.Following approval by
24、 the ASME B16 Standards Committee, this revision to the 2002 editionof this Standard was approved as an American National Standard by ANSI on August 21, 2012.ivASME B16 COMMITTEEStandardization of Valves, Flanges, Fittings, and Gaskets(The following is the roster of the Committee at the time of appr
25、oval of this Standard.)STANDARDS COMMITTEE OFFICERSW. B. Bedesem, ChairG. A. Jolly, Vice ChairC. E. OBrien, SecretarySTANDARDS COMMITTEE PERSONNELA. Appleton, Alloy Stainless Products Co., Inc.R. W. Barnes, Anric Enterprises, Inc.W. B. Bedesem, ConsultantR. M. Bojarczuk, ExxonMobil Research however,
26、 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 interpretation
27、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 activit
28、y.Attending Committee Meetings. The B16 Standards Committee regularly holds meetings, whichare open to the public. Persons wishing to attend any meeting should contact the Secretary ofthe B16 Standards Committee.viASME B16.33-2012MANUALLY OPERATED METALLIC GAS VALVES FOR USEIN GAS PIPING SYSTEMS UP
29、TO 175 psi(SIZES NPS12THROUGH NPS 2)1 SCOPE1.1 GeneralThis Standard covers requirements for manually oper-ated metallic valves sizes NPS12through NPS 2, foroutdoor installation as gas shutoff valves at the end ofthe gas service line and before the gas regulator andmeter where the designated gauge pr
30、essure of the gaspiping system does not exceed 175 psi (12.1 bar). TheStandard applies to valves operated in a temperatureenvironment between 20F and 150F (29C and66C).1.2 DesignThis Standard sets forth the minimum capabilities,characteristics, and properties that a valve at the timeof manufacture m
31、ust possess in order to be consideredsuitable for use in gas piping systems. Details of designand manufacture (other than those stated in thisStandard, including such design and production teststhat will produce a valve that will have the requiredcapabilities to meet this Standard) remain the respon
32、si-bility of the manufacturer.1.3 Standards and SpecificationsStandards and specifications adopted by reference inthis Standard and the names and addresses of the spon-soring organizations are shown in MandatoryAppendix I. It is not considered practical to refer to aspecific edition of each of the s
33、tandards and specifica-tions in the individual references. Instead the specificedition references are included in MandatoryAppendix I. A product made in conformance with aprior edition of reference standards and in all otheraspects conforming to this Standard will be consideredto be in conformance e
34、ven though the edition referencemay be changed in a subsequent revision of thisStandard.1.4 Quality SystemsNonmandatory requirements relating to the manufac-turers quality system program are described inNonmandatory Appendix A.11.5 ConventionFor determining conformance with this Standard, theconvent
35、ion 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 no
36、t imply a particularmethod of measurement.1.6 Codes and RegulationsA valve used under the jurisdiction of the Code ofFederal Regulation (CFR), such as Title 49, Part 192; theASME Code for Pressure Piping, such as ASME B31.8;or the National Fuel Gas Code, NFPA 54, is subject toany limitation of that
37、code or regulation.2 CONSTRUCTION2.1 GeneralEach valve at the time of manufacture shall be capableof meeting the requirements set forth in this Standard.The workmanship employed in the manufacture andassembly of each valve shall provide gas tightness,safety, and reliability of performance, and freed
38、om frominjurious imperfections and defects.2.2 Tamperproof FeaturesWhere valves are specified to be tamperproof, theyshall be designed and constructed to minimize the possi-bility of the removal of the core of the valve with otherthan specialized tools.2.3 Configuration2.3.1 Operating Indication. Th
39、e valve shall be somarked or constructed that the operator can visuallydetermine(a) when a14turn valve is in the open or closed posi-tion (if flat head, longitudinal axis of the head shall beperpendicular to the longitudinal axis of the valve whenvalve is in the closed position)(b) when the valve re
40、quires more than14turn to oper-ate valve, turning direction to open or close the valveASME B16.33-20122.3.2 Valve End. Valve ends shall comply with thefollowing standards where applicable:(a) ASME B1.20.1(b) ASME B16.1(c) ASME B16.52.4 MarkingExcept as may be modified herein, valves shall bemarked a
41、s required in MSS SP-25 and shall include(a) the manufacturers name or trademark and, wherespace permits, the designation “B16.33.” The B16.33mark is the manufacturers acknowledgement that thevalve was manufactured in conformance with ASMEB16.33.(b) marking for pressure ratings such as 60G, 125G,etc
42、., which may be shown on the head, stem, or body.(c) the designation “T” for tamperproof constructionwhere tamperproof features are not easily identifiablewithout disassembling the valve. This designation maybe shown on the head or stem.2.5 Lubrication (Sealant)Valves that require pressure lubricati
43、on (by the injec-tion of lubricant through fittings to the sealing surfaceof the valve) shall be capable of being lubricated whilesubjected to the pressure rating. Compliance with thisprovision can be met if lubrication can be accomplishedwith the valve in both the fully opened and fully closedposit
44、ions. The design must be such as to minimize entryof lubricant into the gasway when lubricated in accor-dance with the manufacturers instructions.3 MATERIALS3.1 Metallic Materials for Valve PartsMetallic materials known to be acceptable for compli-ance withthis Standardare listed inTable 1.Other met
45、al-lic materials may be used when the productincorporating them meets the requirements of thisStandard.3.2 Lubricants, Sealants, and Seating Materials3.2.1 Lubricants and Sealants. Lubricants and/orsealants shall be resistant to the action of fuel gasessuch as natural, manufactured, and LP gases. Th
46、e valvemanufacturer is responsible for the selection of lubri-cants and sealants, and for the determination of theirsuitability for the service conditions specified in thescope of this Standard.3.2.2 Seating and Stem Seal Materials. The valvemanufacturer is responsible for selection of seating andst
47、em seal materials and for determination of their suit-ability for the service conditions specified in the scopeof this Standard.2Table 1 Materials for Metallic Valve PartsCast iron ASTM A126 Class BASTM A48 Class 30Malleable iron ASTM A47 . . .ASTM A197 . . .Ductile iron ASTM A395 . . .ASTM A536 Gra
48、de 60-40-18 orGrade 65-45-12Steel ASTM A108 . . .ASTM A505 . . .ASTM A589 . . .Cast bronze ASTM B62 . . .Cast brass ASTM B584 Alloy UNS C83600Alloy UNS C84400Forged brass ASTM B283 Alloy UNS C37700Rod brass ASTM B16 Alloy UNS C36000Sintered brass ASTM B282 . . .MPIF Std 35 Code CZP 3002 orCZP 20023.
49、2.3 Elastomer Components3.2.3.1 Air Aging Tests. Elastomer parts that areexposed to fuel gas shall be made from materials that,following 70-hrair aging inaccordance withASTM D573at 212F (100C), meet elongation, tensile, and hardnessproperty requirements as follows:(a) Tensile tests shall be conducted on six dumbbellsin accordance with ASTM D412. Three dumbbells shallbe air aged 70 hr in accordance with ASTM D573 at212F (100C). The dumbbells shall have a thickness of0.080 in. 0.008 in. (2.0 mm 0.2 mm). The average ofthe three individual tests for the age
