1、AN AMERICAN NATIONAL STANDARDASME A112.19.10-2017Revision of ASME A112.19.10-2003 (R2008)Retrofit Dual Flush Devices forWater ClosetsASME A112.19.10-2017Revision of ASME A112.19.10-2003 (R2008)Retrofit DualFlush Devices forWater ClosetsxAN AMERICAN NATIONAL STANDARDxDate of Issuance: February 21, 20
2、18This Standard will be revised when the Society approves the issuance of a new edition.ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard. Interpretations arepublished on the Committee Web page and under http:/go.asme.org/InterpsDatabase. Perio
3、dically certain actions of theASMEA112CommitteemaybepublishedasCases.CasesarepublishedontheASMEWebsiteundertheA112CommitteePageat http:/go.asme.org/A112committee as they are issued.Errata to codes and standards may be posted on the ASME Web site under the Committee Pages to provide corrections toinc
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11、American Society of Mechanical EngineersTwo Park Avenue, New York, NY 10016-5990Copyright 2018 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12、. . . . . . . . . . . . . . . . . . . ivCommittee Roster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vCorrespondence With the A112 Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13、 . . . . . . . . . . . . vi1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Te
14、sting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Markings and Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2iiiFOREWORDThe purpose of this Standard i
15、s to establish a nationally recognized standard for dual flush devices to achieve volu-metric water saving performance for water closets. This Standard provides guidance to manufacturers, distributors,purchasers, and jurisdiction officials, specifiers, or water utility planners for water conservatio
16、n, to promote betterunderstanding between suppliers and users, and to furnish a basis for fair competition in furnishing such productsto meet the principal demands of the trade.ThisStandardincludesaseriesoftestsforretrofitdualflushdevicesformodificationoftheflushvolumefrominstalledwater closets that
17、 use 1.28 gal per flush or a greater volume, to reduce water consumption, that may apply such controloptions to provide two distinctive modes of operation. The devices considered to be covered in this Standard are thoserequiredtoprovideatleasta30%reductioninwaterconsumptioninthereducedflushmodeandst
18、illmeettherequiredperformance levels of the Standard.The reductionin water closetflush volumedischargesthat maybe madebya variety oftechniques,other thanoneoranother single motion selector actuation and leaving the unit, are not covered by this Standard. Other active or passivetechniques, or methods
19、 not covered, include, but are not restricted to: installation of dams; displacement volumecontainers; cylindrical or other shaped water barrier containment elements; and hand-held observer, evaluator,and/or controls for termination of the flush. OEM devices are not covered by this Standard.Thetests
20、specifiedinthisStandardfortheremovalofliquidwastesandtoilettissues,orothercomparablewasteloads,are derived from industry experience, from field unit installations, independent laboratory evaluations by the methodsincludedherein,andresearchstudies.Theendeavoraccountsforservicerequirementsthatareneces
21、saryforthesanitaryprotection provided by water closets and water conservation achievable through the installation of these devices. Thetestspresentedarefromdemonstratedapplicationsbycompetentlaboratorypersonnelandfromotherstandardsappli-cations giving results of suitable reproducibility for the purp
22、oses intended.ASMEA112.19.10-1994wasthefirsteditionofthisStandard.Thesecondedition,ASMEA112.19.10-2003,changedtheperformancerequirementstoprovideforanacceptableamountofleakage.Inaddition,softmetricconversionoftheU.S.customary units were added and a number of minor editorial errors have been correcte
23、d.Thisrevisionofthe2003editionhaschangedthescopeofthisStandardtocoverretrofitdeviceswhicharetobefittedinto installed water closets that use 1.28 gal per flush or greater volume. This Standard was approved as an AmericanNational Standard on June 19, 2017.ivASME A112 COMMITTEEStandardization of Plumbi
24、ng Materials and Equipment(The following is the roster of the Committee at the time of approval of this Standard.)STANDARDS COMMITTEE OFFICERSW. M. Smith, ChairS. Rawalpindiwala, Vice ChairA. L. Guzman Rodriguez, SecretarySTANDARDS COMMITTEE PERSONNELR. K. Adler, City of San JoseJ. A. Ballanco, JB E
25、ngineering and Code ConsultingJ. E. Bertrand, Moen, Inc.A. Bonlender, Bradley Corp.R. Burnham, Zurn Industries, LLCM. Campos, ICC Evaluation Service, LLCW. E. Chapin, Professional Code Consulting, LLCP. V. DeMarco, IAPMON. E. Dickey, CSA GroupG. S. Duren, Code Compliance, Inc.R. Emmerson, Consultant
26、R. L. George, Plumb-Tech Design and Consulting Services, LLCA. L. Guzman Rodriguez, The American Society of MechanicalEngineersG. W. Harrison, ConsultantL. Himmelblau, Chicago FaucetJ. M. Koeller, Koeller and Co.C. J. Lagan, American StandardJ. W. Lauer, Sloan Valve Co.W. LeVan, Cast Iron Soil Pipe
27、InstituteD. Marbry, Fluidmaster, Inc.R. Mata, CSA GroupL. A. Mercer, IAPMOD. Orton, NSF InternationalS. Rawalpindiwala, Kohler Co.S. A. Remedios, Remedios Consulting, LLCM. Sigler, Plumbing Manufacturers InternationalG. L. Simmons, Charlotte Pipe however,theyshouldnotcontainproprietarynamesorinforma
28、tion.viRequeststhatarenotintheformatdescribedabovemayberewrittenintheappropriateformatbytheCommitteepriorto being answered, which may inadvertently change the intent of the original request.Moreover, ASME does not act as a consultant for specific engineering problems or for the general application o
29、runderstanding of the Standard requirements. If, based on the inquiry information submitted, it is the opinion ofthe Committee that the inquirer should seek assistance, the inquiry will be returned with the recommendationthat such assistance be obtained.ASMEproceduresprovideforreconsiderationofanyin
30、terpretationwhenorifadditionalinformationthatmightaffectan interpretation is available. Further, persons aggrieved by an interpretation may appeal to the cognizant ASMECommitteeorSubcommittee.ASMEdoesnot“approve,”“certify,”“rate,”or“endorse”anyitem,construction,proprietarydevice, or activity.Attendi
31、ngCommitteeMeetings. TheA112StandardsCommitteeregularlyholdsmeetingsand/ortelephoneconfer-encesthatareopentothepublic.Personswishingtoattendanymeetingand/ortelephoneconferenceshouldcontacttheSecretary of the A112 Standards Committee. Future Committee meeting dates and locations can be found on theCo
32、mmittee Page at http:/go.asme.org/A112committee.viiINTENTIONALLY LEFT BLANKviiiRETROFIT DUAL FLUSH DEVICES FOR WATER CLOSETS1 GENERAL1.1 ScopeThisStandardestablishesphysical,material,testing,andmarkingrequirementsforretrofitdualflushdevicesthatareinstalled within gravity-type water closet tanks and
33、have a full flush volume of 4.8 Lpf (1.28 gpf) or greater volume.1.2 Units of MeasurementThe values stated in either SI (metric) or U.S. Customary (inch/pound) units of measure are to be regarded as thestandard. In this Standard, the inch/pound units are shown in parentheses. The values stated in ea
34、ch measurementsystemareequivalentinapplication;however,eachsystemistobeusedindependently.Combiningvaluesfromthetwomeasurement systems can result in nonconformance with this Standard. All references to gallons are to U.S. gallons.1.3 ReferencesThe following document forms a part of this Standard to t
35、he extent specified herein. Unless otherwise specified, thelatest edition shall apply.ASME A112.19.5/CSA B45.15, Flush Valves and Spuds for Water Closets, Urinals, and TanksPublisher: The American Society of Mechanical Engineers (ASME), Two Park Avenue, New York, NY 10016-5990(www.asme.org)1.4 Defin
36、itionscycletime:thetimebeginningattheinstanttheflushreleasedeviceisoperated,andendingattheinstantthewatersupplyvalve is completely shut off and the water stops flowing.dual flush device:amechanismforcontrolofwaterclosetdischargethatprovidestheuserwithtwooptionsforselectiveoperation with either a nor
37、mal fill volume or a reduced volume of water from the tank.flapper valve: see flush valve.flowing pressure: the pressure in a water supply pipe at the inlet to an open valve.flushtank(gravitytype):avesselthatstoresapredeterminedquantityofwaterandincludesaflushingdevicetodischargewater (plus some thr
38、ough-flow from the water supply line) into a water closet bowl or urinal.NOTE: A common type of flush tank is a wall-hung vessel or a vessel close-coupled with the water closet bowl that is fitted with a fillvalve and flush valve.flush valve: a valve located in a flush tank and used to flush a fixtu
39、re by discharging water into the fixture.sanitary: reasonably acceptable appearance and not necessarily microbiologically clean.water closet: a plumbing fixture having a water-containing receptor that receives liquid and solid body waste and, uponactuation, conveys the waste through an exposed integ
40、ral trap seal into a gravity drainage system.water savings: theamountofflushvolumewaterreductionin gallonsorpercentagewhencomparing consumptionwithand without a dual flush device for a water closet.water surface: the surface of the still water in the water closet bowl when filled to the trap weir.AS
41、ME A112.19.10-201712 GENERAL REQUIREMENTS2.1 Functional OperationThe flush valve with dual flush feature shall be designed for retrofit use in water closets and shall fit within the tankpunchingwithoutinterferencewithotheroperatingparts.Theusershallberequiredtoactivateafullorreducedflushbyactuation
42、of the selector control. After release, the selected flush mode shall be completed without requiring furtheraction or holding by the user.2.2 Flush ValveThe flush valve shall meet the following requirements of ASME A112.19.5/CSA B45.15:(a) rated temperature(b) threads(c) overflow tube(d) thread torq
43、ue test(e) fixture and flush valve leak test(f) leak rate and chemical resistance test3 TESTING3.1 Life Cycle TestingTheflushvalvewithdualflushdeviceshallbeevaluatedfordurability.Thelifecycletestshallbeconductedasfollows:(a) Install the specimen with a minimum sustained water head of 150 mm (6.0 in.
44、) at 21C 5C (70F 10F).(b) Operatethespecimenandallowittoreturntoitsclosedpositionfor30,000cyclesusingasequenceofreducedtofull flushes in a ratio of 1:4. After completing 30,000 cycles at a ratio of 1:4, immediately begin 120,000 cycles in thereduced flush volume mode.3.2 Performance RequirementsDuri
45、ng and after the test, dual flush devices shall(a) continue to function as they did at the beginning of the test(b) show no signs of leakage(c) not develop any defects that might adversely affect their functionality or serviceability4 MARKINGS AND INSTALLATION INSTRUCTIONS4.1 MarkingsRetrofit dual f
46、lush devices shall be marked with the manufacturers name and/or registered trademark or, in case ofprivate labeling, the name for whom the device was manufactured.Markings shall be permanent, legible, and visible after installation.4.1.1 Repair Parts. Devices shall have a label indicating at least t
47、he following:(a) the telephone number of a service department from which end-users can obtain replacement parts(b) the serial or part number(c) information on procuring replacement parts for maintaining the flush volume4.2 InstallationInstallation instructions shall include the following provisions:
48、(a) theproceduresnecessarytoprovideafullvolumeflushandprocedurestoestablishapartialvolumeflushconsis-tent with the requirements in para. 2.1(b) thestepsnecessarytoensurethatthedualflushactuationselectorandallpartsmovefreelywhenthetankisemptyand normally filled4.3 Product Limitations to Specific Wate
49、r ClosetsRestrictions or limitations on the installation of the device(s) to any single or group of manufacturers water closetsshall be specified on a label on the package or instructions by the manufacturer, producer, or provider of the device(s).ASME A112.19.10-20172A112ASME STANDARDS RELATEDTO PLUMBINGA112.1.2-2012 (R2017) Air Gaps in Plumbing Systems (For Plumbing Fixtures and Water-Connected Receptors)A112.1.3-2000 (R2015) Air Gap Fittings for Use With Plumbing Fixtures, Appliances, and AppurtenancesA112.3.1-2007 (R2017) Stainless Steel Drainage Systems for Sanitary, D
