1、ASME B16.33-2002(Revision of ASME B16.33-1990)MANUALLY OPERATED METALLIC GAS VALVES FORUSE IN GAS PIPING SYSTEMSUP TO 125 PSI(SIZES NPS 1/2 THROUGH NPS 2)AN AMERICAN NATIONAL STANDARDCopyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permi
2、tted without license from IHS-,-AN AMERICAN NATIONAL STANDARDMANUALLY OPERATED METALLIC GAS VALVES FORUSE IN GAS PIPING SYSTEMSUP TO 125 PSI(SIZES NPS 1/2 THROUGH NPS 2)ASME B16.33-2002(Revision of ASME B16.33-1990)Copyright ASME International Provided by IHS under license with ASMENot for ResaleNo
3、reproduction or networking permitted without license from IHS-,-Date of Issuance: July 30, 2002The next edition of this Standard is scheduled for publication in 2007. Therewill be no addenda or written interpretations of the requirements of thisStandard issued to this edition.ASME is the registered
4、trademark of The American Society of Mechanical Engineers.This code or standard was developed under procedures accredited as meeting the criteria forAmerican National Standards. The Standards Committee that approved the code or standardwas balanced to assure that individuals from competent and conce
5、rned interests have had anopportunity to participate. The proposed code or standard was made available for public reviewand 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 “endor
6、se” any item, construction, proprietary device,or activity.ASME does not take any position with respect to the validity of any patent rights asserted inconnection with any items mentioned in this document, and does not undertake to insure anyoneutilizing a standard against liability for infringement
7、 of any applicable letters patent, nor assumesany such liability. Users of a code or standard are expressly advised that determination of thevalidity of any such patent rights, and the risk of infringement of such rights, is entirely theirown responsibility.Participation by federal agency representa
8、tive(s) or person(s) affiliated with industry is not tobe interpreted as government or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued inaccordance with the established ASME procedures and policies, which precludes the
9、issuanceof 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 Park Avenue, New York, NY 10016-5990Copyright 2002 b
10、yTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll Rights ReservedPrinted in U.S.A.Copyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-CONTENTSForeword . ivCommittee Roster . viCorrespondence with the B16
11、Committee vii1 Scope . 11.1 General 11.2 Design . 11.3 Standards and Specifications . 11.4 Quality Systems 11.5 Convention . 11.6 Codes and Regulations 12 Construction . 12.1 General 12.2 Tamper-Proof Features 12.3 Configuration . 22.4 Marking . 22.5 Lubrication (Sealant) 23 Materials . 23.1 Metalli
12、c Materials for Valve Parts . 23.2 Lubricants, Sealants, and Seating Materials . 24 Design Qualification . 34.1 General 34.2 Gas Tightness 34.3 Temperature Resistance . 34.4 Structural Provision . 44.5 Flow Capacity 55 Production Testing . 5Figure1 Test Assembly . 4Tables1 Materials for Metallic Val
13、ve Parts . 22 Torque Values 43 Bending Moment Values 44 Tensile Load Values . 55 Maximum Turning Torque Values . 56 Minimum Gas Flows . 5AnnexesA References . 6B Quality System Program 8iiiCopyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking
14、 permitted without license from IHS-,-FOREWORDThe B16 Standards Committee was organized in the Spring of 1920 and held itsorganizational meeting on November 21 of that year. The group operated as a SectionalCommittee (later redesignated as a Standards Committee) under the authorization of theAmerica
15、n Engineering Standards Committee (subsequently named American Standards Associ-ation, United States of America Standards Institute, and now, American National StandardsInstitute). Sponsors for the group were The American Society of Mechanical Engineers,Manufacturers Standardization Society of the V
16、alve however, they should not contain proprietary names orinformation.Requests that are not in this format will be rewritten in this format by the Committeeprior to being answered, which may inadvertently change the intent of the original request.ASME procedures provide for reconsideration of any in
17、terpretation when or if additionalinformation that might affect an interpretation is available. Further, persons aggrieved byan interpretation may appeal to the cognizant ASME Committee or Subcommittee. ASMEdoes not “approve,”“certify,”“rate,” or “endorse” any item, construction, proprietary device,
18、or activity.Attending Committee Meetings. The B16 Main Committee regularly holds meetings, whichare open to the public. Persons wishing to attend any meeting should contact the Secretaryof the B16 Main Committee.viiCopyright ASME International Provided by IHS under license with ASMENot for ResaleNo
19、reproduction or networking permitted without license from IHS-,-Copyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-ASME B16.33-2002MANUALLY OPERATED METALLIC GAS VALVES FOR USE IN GASPIPING SYSTEMS UP T
20、O 125 PSI (SIZES NPS1/2THROUGH NPS 2)1 SCOPE1.1 GeneralThis Standard covers requirements for manually oper-ated metallic valves sizes NPS12through NPS 2, foroutdoor installation as gas shut-off valves at the endof the gas service line and before the gas regulatorand meter where the designated gauge
21、pressure of thegas piping system does not exceed 125 psi (8.6 bar).The Standard 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, which a valve at thetime of manufactur
22、e must possess, in order to beconsidered suitable for use in gas piping systems.Details of design and manufacture (other than thosestated in this Standard, including such design andproduction tests that will produce a valve that willhave the required capabilities to meet this Standard)remain the res
23、ponsibility of the manufacturer.1.3 Standards and SpecificationsStandards and specifications adopted by reference inthis Standard and the names and addresses of thesponsoring organizations are shown in NonmandatoryAnnex A. It is not considered practical to refer to aspecific edition of each of the s
24、tandards and specifica-tions in the individual references. Instead the specificedition references are included in Nonmandatory AnnexA. A product made in conformance with a prior editionof reference standards and in all other aspects conform-ing to this Standard will be considered to be in confor-man
25、ce even though the edition reference may bechanged in a subsequent revision of this Standard.11.4 Quality SystemsNonmandatory requirements relating to the manufac-turers Quality System Program are described in Non-mandatory Annex B.1.5 ConventionFor the purpose of determining conformance withthis St
26、andard, the convention for fixing significant digitswhere limits, maximum or minimum values, are speci-fied shall be “rounding off” as defined in ASTM PracticeE 29. This requires that an observed or calculated valueshall be rounded off to the nearest unit in the lastright-hand digit used for express
27、ing the limit. Decimalvalues and tolerances do not imply a particular methodof measurement.1.6 Codes and RegulationsA valve used under the jurisdiction of the Code ofFederal Regulation (CFR) such as Title 49 Part 192,the ASME Code for Pressure Piping such as ASMEB31.8, or the National Fuel Gas Code,
28、 Z223.1, issubject to any limitation of that code or regulation.2 CONSTRUCTION2.1 GeneralEach valve at the time of manufacture shall becapable of meeting the requirements set forth in thisStandard. The workmanship employed in the manufac-ture and assembly of each valve shall provide gastightness, sa
29、fety, and reliability of performance andfreedom from injurious imperfections and defects.2.2 Tamper-Proof FeaturesWhere valves are specified to be tamper-proof, theyshall be designed and constructed to minimize thepossibility of the removal of the core of the valve withother than specialized tools.C
30、opyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-MANUALLY OPERATED METALLIC GAS VALVES FOR USE INGAS PIPING SYSTEMS UP TO 125 PSIASME B16.33-20022.3 Configuration2.3.1 Operating Indication. The valve s
31、hall beso marked or constructed that the operator can visuallydetermine:(a) when a14turn valve is in the open or closedposition (if flat head, longitudinal axis of the headshall be perpendicular to the longitudinal axis of thevalve when valve is in the closed position);(b) when the valve requires mo
32、re than14turn tooperate valve, turning direction to open or close thevalve.2.3.2 Valve End. Valve ends shall comply withthe following standards where applicable:(a) ASME B1.20.1 Pipe Threads;(b) ASME B16.1 Cast Iron Flanges and FlangedFittings; and(c) ASME B16.5 Steel Pipe Flanges and FlangedFitting
33、s.2.4 Marking2.4.1 General. Except as may be modified herein,valves shall be marked as required in MSS SP-25 andshall include the following requirements.2.4.1.1 Name. The manufacturersnameortrademark and, where space permits, the designation“B16.33”. The B16.33 mark is the manufacturers ac-knowledge
34、ment that the valve was manufactured inconformance with ASME B16.33.2.4.1.2 Pressure Rating. Marking for pressureratings such as 60G, 125G, etc., may be shown on thehead, stem, or body.2.4.1.3 Tamper-Proof. The designation “T” fortamper-proof construction where tamper-proof featuresare not easily id
35、entifiable without disassembling thevalve. This designation may be shown on the heador stem.2.5 Lubrication (Sealant)Valves which require pressure lubrication (by theinjection of lubricant through fittings to the sealingsurface of the valve) shall be capable of being lubricatedwhile subjected to the
36、 pressure rating. Compliancewith this provision can be met if lubrication can beaccomplished with the valve in both the fully openedand fully closed positions. The design must be suchas to minimize entry of lubricant into the gaswaywhen lubricated in accordance with the manufacturersinstruction.2TAB
37、LE 1MATERIALS FOR METALLIC VALVE PARTSCast Iron ASTM A 126 Class BASTM A 48 Class 30Malleable Iron ASTM A 47ASTM A 197Ductile Iron ASTM A 395ASTM A 536 Grade 60-40-18 orGrade 65-45-12Steel ASTM A 108ASTM A 505ASTM A 589Cast Bronze ASTM B 62Cast Brass ASTM B 584 Alloy UNS C83600Alloy UNS C84400Forged
38、 Brass ASTM B 283 Alloy UNS C37700Rod Brass ASTM B 16 Alloy UNS C36000Sintered Brass ASTM B 282MPIF Std 35 Code CZP 3002 orCZP 20023 MATERIALS3.1 Metallic Materials for Valve PartsMetallic materials known to be acceptable for compli-ance with this Standard are listed in Table 1. Othermetallic materi
39、als may be used when the product incor-porating them meets the requirements of this Standard.3.2 Lubricants, Sealants, and SeatingMaterials3.2.1 Lubricants and Sealants. Lubricants and/or sealants shall be resistant to the action of fuel gasessuch as natural, manufactured, and LP gases. Thevalve man
40、ufacturer is responsible for the selection oflubricants and sealants, and for the determination oftheir suitability for the service conditions specified inthe scope of this Standard.3.2.2 Seating and Stem Seal Materials. Thevalve manufacturer is responsible for selection of seatingand stem seal mate
41、rials and for determination of theirsuitability for the service conditions specified in thescope of this Standard.3.2.3 Elastomer Components3.2.3.1 Air Aging Tests. Elastomer parts thatare exposed to fuel gas shall be made from materialsthat, following 70 hr air aging in accordance withASTM D 573 at
42、 212F (100C), meet elongation,tensile, and hardness property requirements a follows:Tensile tests shall be conducted on six dumbbells inaccordance with ASTM D 412. Three dumbbells shallCopyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking per
43、mitted without license from IHS-,-MANUALLY OPERATED METALLIC GAS VALVES FOR USE INGAS PIPING SYSTEMS UP TO 125 PSI ASME B16.33-2002be air aged 70 hr in accordance with ASTM D 573at 212F (100C). The dumbbells shall have a thicknessof 0.080 + 0.008 in. (2.0 0.2 mm). The average ofthe three individual
44、tests for the aged dumbbells shallexceed 60% retention of ultimate elongation and 60%retention of tensile strength at break. The average ofthe three individual tests for the non-aged dumbbellsshall be the basis for % retention calculation. Hardnesstests shall be conducted using specimens in accordan
45、cewith ASTM D 395, Type 2. Three specimens shall beair aged 70 hr in accordance with ASTM D 573 at212F (100C). The average of the three individualtests for the aged specimens shall not show a hardnesschange of more than 10 shore hardness points relativeto the average hardness of the non-aged specime
46、ns.3.2.3.2 Swell Tests. Elastomer parts, which areexposed to fuel gas, shall be made from materials that,after 70 hr exposure in n-hexane at 74F (23C), inaccordance with ASTM D 471, meet the volume change,elongation, and tensile property requirements as follows:Volume change test shall be conducted
47、using sixspecimen in accordance with ASTM D 471, Section8. Three specimen shall be exposed for 70 hr at 74F(23C) in n-hexane in accordance with ASTM D 471.The average of the three individual n-hexane tests shallnot show an increase in volume of more than 25% ora decrease in volume of more than 1%. T
48、he averageof the three tests for the non-aged specimen shall bethe basis for the % retention change calculation.Tensile tests shall be conducted on six dumbbellsin accordance with ASTM D 412. Three of the tensiletests shall be conducted on dumbbells exposed in n-hexane at 74F (23C) for 70 hr in acco
49、rdance withASTM D 471. The dumbbells shall have a thicknessof 0.080 + 0.008 in. (2.0 0.2 mm). The average ofthe three individual n-hexane tests shall exceed 60%retention of ultimate elongation and 60% retention oftensile strength at break. The average of the three testsfor the non-aged specimen shall be the basis for the% volume change calculation.3.2.3.3 Compression Set Tests. Elastomerparts, which may be expose
