ASME A112 4 14-2004 Manually Operated Quarter-Turn Shutoff Valves for Use in Plumbing Systems《管道工程用手动直角转弯截止阀》.pdf

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1、AN AMERICAN NATIONAL STANDARDManually Operated, Quarter-Turn Shutoff Valves for Use in Plumbing SystemsASME A112.4.14-2004ASME A112.4.14-2004Manually Operated,Quarter-Turn ShutoffValves for Use inPlumbing SystemsAN AMERICAN NATIONAL STANDARDThree Park Avenue New York, NY 10016Date of Issuance: April

2、 22, 2005This Standard will be revised when the Society approves the issuance of a new edition. There willbe no addenda issued to this edition.ASME issues written replies to inquiries concerning interpretations of technical aspects of thisStandard. Interpretations are published on the ASME Web site

3、under the Committee Pages at http:/www.asme.org/codes/ as they are issued.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 t

4、hat approved the code or standard was balanced to assure 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

5、, 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 anyitems mentioned in this docum

6、ent, and does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent, nor assume 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 infringe

7、ment of such rights, isentirely their own responsibility.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 d

8、ocument issued in accordance with the establishedASME 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.Th

9、e American Society of Mechanical EngineersThree Park Avenue, New York, NY 10016-5990Copyright 2005 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword ivCommittee Roster . vCorrespondence With the A112 Committee . vi1 General 12 General Construction and

10、 Assembly . 23 Materials 24 Design Requirements . 25 Qualification Testing 36 Markings 3iiiFOREWORDIn 2001, the American Society of Mechanical Engineers received a request for the developmentof a standard for ball valves that would normally be used in residential hot and cold waterplumbing systems.

11、This request was approved by the ASME A112 Standards Committee andassigned to a new project team (PT 4.14).The IAPMO IGC 157 entitled “Ball Valves” was used as the base document for this Standard.While in development, the ASME project team broadened the title and scope to cover “quarterturn shutoff

12、valves.”This Standard was developed with the hope that due consideration should be given for adoptionof these provisions by model, state, and local codes.Suggestions for improvement of this Standard will be welcomed. They should be sent to TheAmerican Society of Mechanical Engineers; Attn: Secretary

13、, A112 Standards Committee; ThreePark Avenue; New York, NY 10016-5990.This Standard was approved as an American National Standard on May 25, 2004.ivASME A112 STANDARDS COMMITTEE(The following is the roster of the Committee at the time of approval of this Standard.)OFFICERSD. W. Viola, ChairS. A. Rem

14、edios, Vice ChairC. J. Gomez, SecretaryCOMMITTEE PERSONNELR. H. Ackroyd, Rand EngineeringJ. A. Ballanco, JB Engineering however, 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, whic

15、h 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 interpretation is available. Further, persons aggrieved by aninterpretation may appeal to the cognizant ASME Committee

16、 or Subcommittee. ASME does not“approve,” “certify,” “rate,” or “endorse” any item, construction, proprietary device, or activity.Attending Committee Meetings. The A112 Standards Committee schedules meetings as needed,which are open to the public. Persons wishing to attend any meeting should contact

17、 the Secretaryof the A112 Standards Committee. The A112 home page contains information on future meetingdates and locations.viASME A112.4.14-2004MANUALLY OPERATED, QUARTER-TURN SHUTOFF VALVESFOR USE IN PLUMBING SYSTEMS1 GENERAL1.1 ScopeThis Standard establishes requirements for manuallyoperated, qua

18、rter-turn valves in nominal sizes (NPS) 2.These valves are intended for indoor installation as pota-ble water shutoff valves between the meter and the sup-ply stop. Valves governed by this Standard are intendedfor service at temperatures between 34F (1C) and 180F(82C), with an allowable working pres

19、sure rating notless than 125 psi (862 kPa).1.2 LimitationsThis Standard does not apply to hose end valves orendpoint devices as defined in NSF/ANSI 61, Section 9.1.3 Units of MeasurementThe values stated in either U.S. customary units orthe International System of Units (SI) are to be regardedsepara

20、tely as standard. The values stated in each systemare not exact equivalents; therefore, each system mustbe used independently of the other. Combining valuesfrom the two systems may result in non-conformancewith the Standard. All pressures, unless otherwise speci-fied, are gauge pressures. For the pu

21、rpose of determin-ing conformance with this Standard, the convention for“rounding off” shall be as defined in ASTM E29.1.4 ReferencesThe following is a list of publications referenced inthis Standard.ASME B1.20.1, Pipe Threads (Excluding Dryseal)ASME B16.18, Cast Copper Alloy Solder Joint PressureFi

22、ttingsASME B16.22, Wrought Copper and Copper Alloy Sol-der Joint Pressure FittingsASME B16.26, Cast Copper Alloy Fittings for FlaredCopper TubesPublisher: The American Society of Mechanical Engi-neers (ASME), Three Park Avenue, New York, NY10016-5990; Order Department: 22 Law Drive, Box2300, Fairfie

23、ld, NJ 07007-23001ASTM B16, Free-Cutting Brass Rod, Bar, and Shapes forUse in Screw MachinesASTM B62, Composition Bronze or Ounce MetalCastingsASTM B124, Copper and Copper Alloy Forging Rod,Bar, and ShapesASTM B371, Copper-Zinc-Silicon Alloy RodASTM B584, Copper Alloy Sand Castings for GeneralApplic

24、ationsASTM D2846, Chlorinated Poly (Vinyl Chloride) (CPVC)Plastic Hot- and Cold-Water Distribution SystemsASTM E29, Standard Practice for Using Significant Dig-its in Test Data to Determine Conformance with Speci-ficationsASTM F439, Chlorinated Poly (Vinyl Chloride) (CPVC)Plastic Pipe Fittings, Sche

25、dule 80ASTM F876, Crosslinked Polyethylene (PEX) TubingASTM F877, Crosslinked Polyethylene (PEX) PlasticHot- and Cold-Water Distribution SystemsASTM F1498, Taper Pipe Threads 60for ThermoplasticPipe and FittingsASTM F1807, Metal Insert Fittings Utilizing a CopperCrimp Ring for SDR9 Cross-linked Poly

26、ethylene (PEX)TubingASTM F1960, Cold Expansion Fittings with PEX Rein-forcing Rings for Use with Cross-linked Polyethylene(PEX) TubingASTM F1970, Special Engineered Fittings, Appurte-nances or Valves for use in Poly (Vinyl Chloride) (PVC)or Chlorinated Poly (Vinyl Chloride) (CPVC) SystemASTM F2159,

27、Plastic Insert Fittings Utilizing a CopperCrimp Ring for SDR9 Cross-linked Polyethylene (PEX)TubingPublisher: The American Society for Testing and Materi-als (ASTM), 100 Barr Harbor Drive, West Consho-hocken, PA 19428.ANSI/ISA 75.01.01, Flow Equations for Sizing ControlValvesPublisher: Instrument So

28、ciety of America (ISA), 67 Alex-ander Drive, Research Triangle Park, NC 27709.NSF/ANSI 61, Drinking Water System Components Health EffectsPublisher: NSF International, 789 North Dixboro Road,Ann Arbor, MI 48113.ASME A112.4.14-2004 MANUALLY OPERATED, QUARTER-TURN SHUTOFF VALVESFOR USE IN PLUMBING SYS

29、TEMS2 GENERAL CONSTRUCTION AND ASSEMBLY2.1 GeneralSamples for testing to this Standard shall be randomlyselected from a lot of production representative samples.2.2 End Connections2.2.1 Taper Pipe Threads. Metallic taper pipe threadsshall be in accordance with ASME B1.20.1. Plastic taperpipe threads

30、 shall be in accordance with ASTM F1498.2.2.2 Solder Connections. Solder-cup ends for coppertube connection shall be in accordance with ANSI B16.18or ASME B16.22.2.2.3 Solvent Cement Connections. Socket ends forsolvent-cement connection to PVC or CPVC pipe or tubeshall be in accordance with ASTM D24

31、66 (PVC andCPVC), ASTM D2467 (PVC), ASTM D2846 and ASTMF439 (CPVC).2.2.4 PEX Barbs Connection. Metallic barb-ends forconnection to PEX tubing shall be in accordance withASTM F1807. Plastic barb-ends for connection to PEXtubing shall be in accordance with ASTM F2159 or ASTMF1960.2.2.5 Flared Connecti

32、on. Flared connections to coppertube shall be in accordance with ASME B16.26.2.2.6 Grooved End. Grooved end connections shall bein accordance with AWWA C606.2.2.7 Other Connections. Connection methods notspecified herein shall be in accordance with a nationallyor internationally recognized standard.

33、2.3 OperationThe valve shall require14turn from the fully closedposition to the fully opened position, or from the fullyopened position to the fully closed position. The valveshall be constructed so that the operator can visuallydetermine that the valve is in the opened or closed posi-tion. When the

34、 valve is in the closed position, theoperating lever or flow indicator shall be perpendicularto the longitudinal axis of the valve. The stem flats orindicator on the top of the stem shall indicate that thevalve is in the opened or closed position when theoperating device has been removed.3 MATERIALS

35、The following requirements pertain to materials usedin valve body, bonnet, end pieces, pressure-containingparts, and wetted operating parts.3.1 Copper AlloysCopper alloys shall be minimum 58% copper and meetone of the following specifications:2ASTM B62 (C83600)ASTM B584 (C84400)ASTM B124 (C37000)AST

36、M B16 (C36000)ASTM B371 (C69430)UNS C89831UNS C89833UNS C89837UNS C89510UNS C89520ISO Cu Zn40 Pb2 CW617NISO Cu Zn36 Pb2 As CW602NISO Cu Zn39 Pb3 CW614N3.2 Ferrous AlloysFerrous alloys shall be a 300 series stainless steel.3.3 Polymeric Materials(a) PEX cross-linked polyethylene shall conform toASTM

37、F876 or ASTM F877.(b) Chlorinated polyvinyl chloride (CPVC) materialused for pressure containing parts shall conform toASTM D1784, Classification 23447.3.4 Alternate MaterialsAlternate equivalent materials used shall conform tonational or international standards for which mechani-cal and chemical da

38、ta are available. Metallic alloys withan excess of 8% lead shall not be used in contact withpotable water.3.5 Flux and SoldersFlux and solders containing more than 0.2% lead shallnot be used in contact with potable water.4 DESIGN REQUIREMENTS4.1 Stem DesignThe valve shall be designed so that the ste

39、m-seal alonedoes not retain the stem to prevent the removal of thestem while the valve is under pressure.4.2 Temperature, Pressure RatingMetallic valves shall have a minimum pressure ratingof 125 psi (862 kPa) and the minimum temperature rat-ing shall be 140F (60C) for continuous use and 180F(82C) f

40、or intermittent use.4.3 Temperature and Pressure RatingPolymeric valves shall have a minimum pressure rat-ing of 125 psi (862 kPa) and the minimum temperaturerating shall be 140F (60C) for continuous use and100 psi (689 kPa) at 180F (82C) for intermittent use.5 QUALIFICATION TESTINGMANUALLY OPERATED

41、, QUARTER-TURN SHUTOFF VALVES ASME A112.4.14-2004FOR USE IN PLUMBING SYSTEMS5.1 Hydrostatic Test(a) Metallic Valves. The test valve shall be given ahydrostatic test at a pressure of two times its markedpressure rating. The test fluid shall be water. The testfluid temperature shall be 140F (60C). The

42、 durationof the test shall be 1 min.The ball or disc shall be in such a position during theshell test as to ensure full pressurization of the valve.(b) Polymeric Valves. Polymeric valves shall be hydro-statically tested to ASTM F1970, para. 8.2.5.1.1 Performance Criteria. The valve exterior shallsho

43、w no visible leakage. Leakage through the stem pack-ing shall not be cause for rejection as long as a packinggland adjustment stops the leakage.5.2 Seat Test5.2.1 Procedure. Following the shell test, the testvalve shall be given a seat test. The test shall be a hydro-static test at not less than 125

44、 psi at 140F (60C) or themaximum rated pressure and temperature of the valve.The test pressure shall be applied successively on eachside of the closed valve for duration of not less than1 min.Valves marked as one-way valves require a seat testonly in the direction of the flow.5.2.2 Performance Crite

45、ria There shall be no visibleevidence of leakage through the disc or ball nor leakagepast the seat.5.3 Cycle Test5.3.1 Procedure. A production sample valve shallwithstand 1,000 cycles of operation from the fullyopened to the fully closed position at its continuousrated temperature not less than 140F

46、 (60C). The test isto be conducted with a hydrostatic pressure-differentialapplied across the closed disc/ball equal to the ratedworking pressure. Restrict an opening downstream of thevalve to a flow of approximately 2.5 gpm (9.5 L/min)during the open portion of the test.35.3.2 Performance Criteria.

47、 After the cycling test, thevalve shall comply with the seat test (para. 5.2). Thevalve assembly shall show no signs of visible damage.5.4 Flow Test5.4.1 Procedure. With the valve in the full open posi-tion, a flow test shall be conducted to determine the Cvof the valve as specified in ANSI/ISA 75.0

48、1.01.5.4.2 Performance Criteria. The valve shall have a Cvfactor equal to or greater than the following table:Nominal Pipe Size Cv181.51433861210341712711425112652 1005.5 Potable Water Compatibility TestThe valve shall comply with NSF/ANSI 61, section 8.6 MARKINGS(a) The required markings shall be l

49、egible and readilyvisible. They shall be applied by such means asembossing, etching, silk screening on handle, or equiva-lent means.(b) The manufacturers name or trademark, or privatelabelers name or trademark shall be shown.(c) The marking shall indicate the maximum workingpressure-temperature for which the valve is designed.(d) The size shall be shown on the valve.(e) For unidirectional valves, the direction of flowshall be shown on the valve.4ASME STANDARDS RELATED TO PLUMBINGAir Gaps in Plumbing Systems (For Plumbing Fixtures and Water-Connected Receptor