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The American Society of Mechanical Engineers A N A M E R I C A N N A T I O N A L S T A N D A R D MANUALLY OPERATED METALLIC CAS VALVES FOR USE IN GAS PIPINC SYSTEMS UP TO 125 PSI(WES NPS V2THROUGH NPS 2)ASME B I 6.33-2002(Revision 01 ASME 61 6.33-1 990)Date of Issuance:July 30,2002 The next edition of this Standard is scheduled for publication in 2007.There will be no addenda or written interpretations of the requirements of this Standard issued to this edition.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 National Standards.The Standards Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate.The proposed code or standard was made available 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 activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable letters patent,nor assumes any such liability.Users of a code or standard are expressly advised that determination of the validity of any such patent rights,and the risk of infringement of such rights,is entirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted as government or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME 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 Engineers Three Park Avenue,New York,NY 10016-5990 Copyright O 2002 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved Printed in U.S.A.Foreword.Committee Roster.Correspondence with the B16 Committee.1 Scope.1.2 Design.1.3 Standards and Specifications.1.4 Quality Systems.1.5 Convention.1.6 Codes and Regulations.2 Construction.2.1 General.2.2 Tamper-Proof Features.2.3 Configuration.2.4 Marking.2.5 Lubrication(Sealant).3 Materials.3.1 Metallic Materials for Valve Parts.3.2 Lubricants,Sealants,and Seating Materials.4 Design Qualification.4.1 General.4.2 Gas Tightness.4.3 Temperature Resistance.4.4 Structural Provision.4.5 Flow Capacity.1.1 General.5 Production Testing.Figure 1 Test Assembly.Tables 1 Materials for Metallic Valve Parts.2 Torque Values 3 Bending Moment Values.4 Tensile Load Values.5 Maximum Turning Torque Values.6 Minimum Gas Flows.Annexes A References.B Quality System Program.iv vi vii 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 4 6 8.111 FOREWORD The B16 Standards Committee was organized in the Spring of 1920 and held its organizational meeting on November 21 of that year.The group operated as a Sectional Committee(later redesignated as a Standards Committee)under the authorization of the American Engineering Standards Committee(subsequently named American Standards Associ-ation,United States of America Standards Institute,and now,American National Standards Institute).Sponsors for the group were The American Society of Mechanical Engineers,Manufacturers Standardization Society of the Valve&Fittings Industry,and the Heating and Piping Contractors National Association(later the Mechanical Contractors Association of America).The American Gas Association determined that standardization of gas shut-off valves used in distribution services was desirable and needed.The AGA Task Committee on Standards for Valves and Shut-Offs was formed,and development work commenced in 1958.In 1968,it was determined that a more acceptable document would result if approval were gained from the American National Standards Institute and to facilitate such action,the AGA Committee became Subcommittee No.13 of the BI6 activity.This Standard offers more performance requirements than has been customary in B16 standards.It is expected that this will permit both manufacturers and users greater latitude in producing and using products made to this Standard.Work was agonizingly slow as the group gradually developed the document in the desired format.Its efforts were successful when,on July 18,1973,final approval was granted by the institute.The revision incorporated some major revisions to the format.In addition,the scope of the standard was clarified so that the standard could be applicable to all manually operated metallic gas valves for use in gas piping standards up to 125 psig.The revised standard incorporated testing criteria for valves,which could have a specific pressure rating within this pressure range.This revision was made to clarify the fact that the standard is also applicable to valves with service designations 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 scope clearly limited the standard to turning torque valves at the time of manufacture.This edition established U.S.customary units as the standard and metric equivalents were deleted.In 1982,American National Standards Committee B16 was recognized as an ASME Committee operating under procedures accredited by ANSI.In 2002,a new materials section was added along with several other revisions.Also incorporated were metric values and a nonmandatory Quality System Program Annex.Use of these valves in higher rated systems is outside the scope of this Standard,and is neither permitted nor prohibited.iv Following approval by the ASME B16 Standards Committee,this revision to the 1990 edition of this Standard was approved as an American National Standard by ANSI on May 16,2002.All requests for interpretations or suggestions for revisions should be sent to the Secretary,B16 Committee,The American Society of Mechanical Engineers,Three Park Avenue,New York,N.Y.10016-5990.ASME BI6 COMMITTEE Standardization of Valves,Flanges,Fittings,Gaskets,and Valve Actuators(The following is the roster of the Committee at the time of approval of this Standard.)OFFICERS H.R.Sonderegger,Chair M.L.Nayyar,Vice Chair P.A.Reddington,Secretary COMMITTEE PERSONNEL R.W.Barnes,Anric Enterprises R.R.Brodin,Fisher Controls International,Inc.M.A.Clark,Nibco,Inc.A.Cohen,A.Cohen and Associates C.E.Floren,Mueller Co.D.R.Frikken,Solutia,Inc.G.A.Jolly,Vogt Valve Co.W.G.Knecht,BWAP International,Inc.R.Koester,The William Powell Co.W.N.McLean.Newco Valves M.L.Nayyar,Bechtel Power Corp.P.A.Reddington,The American Society of Mechanical Engineers R.A.Schmidt,Trinity-Ladish Co.H.R.Sonderegger,Grinnell Corp.W.M.Stephan,Flexitallic,Inc.T.F.Stroud,Ductile Iron Pipe Research Association R.E.White,Richard E.White and Associates D.A.Williams,Southern Company Services L.A.Willis,The Dow Chemical Co.W.R.Worley,Union Carbide Corp.SUBCOMMITTEE L-GAS SHUTOFFS AND VALVES C.A.Floren,Chair,Muller Co.F.R.Volgstadt,Vice Chair,TPS Consulting,Inc.R.W.Conley,Kerotest Manufacturing Corp.J.D.Eckel,A Y McDonald D.S.Glover,Brass Craft Manufacturing C.A.Hamilton,ABS America A.J.Heil,NIBCO,Inc.G.E.Moino,The American Society of Mechanical Engineers T.Perrera,Csa International A.M.Pietramale,Pietramale and Associates T.J.Pitzl,Tennessee Valley Authority C.R.Stevens,National Meter Co.D.P.Zapalac,Rw Lyall&Co,Inc.vi CORRESPONDENCE WITH THE 616 COMMITTEE General.ASME Standards are developed and maintained with the intent to represent the consensus of concerned interests.As such,users of this Standard may interact with the Committee by requesting interpretations,proposing revisions,and attending Committee meetings.Correspondence should be addressed to:Secretary,B16 Main Committee The American Society of Mechanical Engineers Three Park Avenue New York,NY 10016-5990 Proposing Revisions.Revisions are made periodically to the Standard to incorporate changes that appear necessary or desirable,as demonstrated by the experience gained from the application of the Standard.Approved revisions will be published periodically.The Committee welcomes proposals for revisions to this Standard.Such proposals should be as specific as possible,citing the paragraph number(s),the proposed wording,and a detailed description of the reasons for the proposal,including any pertinent documentation.Interpretations.Upon request,the B 16 Committee will render an interpretation of any requirement of the Standard.Interpretations can only be rendered in response to a written request sent to the Secretary of the B16 Main Committee.The request for interpretation should be clear and unambiguous.It is further recommended that the inquirer submit hisher request in the following format:Subject:Edition:Question:Cite the applicable paragraph number(s)and the topic of the inquiry.Cite the applicable edition of the Standard for which the interpretation is being requested.Phrase the question as a request for an interpretation of a specific requirement suitable for general understanding and use,not as a request for an approval of a proprietary design or situation.The inquirer may also include any plans or drawings,which are necessary to explain the question;however,they should not contain proprietary names or information.Requests that are not in this format will be rewritten in this format by the Committee prior to being answered,which may inadvertently change the intent of the original request.ASME procedures provide for reconsideration of any interpretation when or if additional information that might affect an interpretation is available.Further,persons aggrieved by an interpretation 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 B 16 Main Committee regularly holds meetings,which are open to the public.Persons wishing to attend any meeting should contact the Secretary of the B16 Main Committee.vii ASME 616.33-2002 MANUALLY OPERATED METALLIC GAS VALVES FOR USE IN GAS PIPING SYSTEMS UP TO 125 PSI(SIZES NPS THROUGH NPS 2)1 SCOPE 1.4 Quality Systems 1.1 General This Standard covers requirements for manually oper-ated metallic valves sizes NPS/2 through NPS 2,for outdoor installation as gas shut-off valves at the end of the gas service line and before the gas regulator and meter where the designated gauge pressure of the gas piping system does not exceed 125 psi(8.6 bar).The Standard applies to valves operated in a temperature environment between-20F and 150F(-29C and 66C).Nonmandatory requirements relating to the manufac-turers Quality System Program are described in Non-mandatory Annex B.1.5 Convention For the purpose of determining conformance with this Standard,the convention for fixing significant digits where limits,maximum or minimum values,are speci-fied shall be“rounding off as defined in ASTM Practice E 29.This requires that an observed or calculated value shall be rounded off to the nearest unit in the last right-hand digit used for expressing the limit.Decimal values and tolerances do not imply a particular method of measurement.1.2 Design This Standard sets forth the minimum capabilities,characteristics,and properties,which a valve at the 1.6 Codes and Regulations time of manufacture must possess,in order to be A valve used under the jurisdiction of the Code of considered suitable for use in gas piping systems.Federal Regulation(CFR)such as Title 49 Part 192,Details of design and manufacture(other than those the ASME Code for Pressure Piping such as ASME stated in this Standard,including such design and B31.8,or the National Fuel G a s Code,2223.1,is production tests that will produce a valve that will subject to any limitation of that code or regulation.have the required capabilities to meet this Standard)remain the responsibility of the manufacturer.2 CONSTRUCTION 2.1 General 1.3 Standards and SDecifications Each valve at the time of manufacture shall be capable of meeting the requirements set forth in this Standard.The worhanship employed in the manufac-ture and assembly of each valve shall provide gas tightness,safety,and reliability of performance and freedom Erom injurious imperfections and defects.Standards and specifications adopted by reference in this Standard and the names and addresses of the sponsoring organizations are shown in Nonmandatory Annex A.It is not considered practical to refer to a specific edition of each of the standards and specifica-tions in the individual references.Instead the specific edition references are included in Nonmandatory Annex A.A product made in conformance with a prior edition 2.2 Tamper-Proof Features of reference standards and in all other aspects conform-ing to this Standard will be considered to be in confor-mance even though the edition reference may be changed in a subsequent revision of this Standard.Where valves are specified to be tamper-proof,they shall be designed and constructed to minimize the possibility of the removal of the core of the valve with other than specialized tools.1 ASME 816.33-2002 MANUALLY OPERATED METALLIC GAS VALVES FOR USE IN GAS PIPING SYSTEMS UP TO 125 PSI 2.3 Configuration 2.3.1 Operating Indication.The valve shall be so marked or constructed that the operator can visually determine:(a)when a v4 turn valve is in the open or closed position(if flat head,longitudinal axis of the head shall be perpendicular to the longitudinal axis of the valve when valve is in the closed position);(b)when the valve requires more than v4 turn to operate valve,turning direction to open or close the valve.2.3.2 Valve End.Valve ends shall comply with(a)ASME B1.20.1 Pipe Threads;(b)ASME B16.1 Cast Iron Flanges and Flanged(c)ASME B16.5 Steel Pipe Flanges and Flanged the following standards where applicable:Fittings;and Fittings.2.4 Marking 2.4.1 General.Except as may be modified herein,valves shall be marked as required in MSS SP-25 and shall include the following requirements.2.4.1.1 Name.The manufacturers name or trademark and,where space permits,the designation“B16.33”.The B16.33 mark is the manufacturers ac-knowledgement that the valve was manufactured in conformance with ASME B16.33.2.4.1.2 Pressure Rating.Marking for pressure ratings such as 60G,125G,etc.,may be shown on the head,stem,or body.2.4.1.3 Tamper-Proof.The designation“T”for tamper-proof construction where tamper-proof features are not easily identifiable without disassembling the valve.This designation may be shown on the head or ste