1、AN AMERICAN NATIONAL STANDARDASME A112.19.10-2017Revision of ASME A112.19.10-2003 (R2008)Retrofit Dual Flush Devices forWater ClosetsASME A112.19.10-201 7Revision of ASME A112.19.10-2003 (R2008)Retrofit DualFlush Devices forWater ClosetsxAN AMERICAN NATIONAL STANDARDxDate of Issuance: February 21, 2
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11、ions by individuals.No part of this document may be reproduced in any form,in an electronic retrieval sys t em or otherwise,without the prior writ ten permission of the publisher .The American Society of Mechanical EngineersTwo Park Avenue, New York, NY 10016-5990Copyright 2018 byTHE AMERICAN SOCIET
12、Y OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ivCommittee Roster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vCorrespondence With the A112 Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14、 . . . . . . . . . . . . . . . . . . . . . . . . 12 General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15、. . . . . . . . . . 24 Markings and Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2iiiFOREWORDThe purpose of this Standard is to establish a nationally recognized standard for dual flush devices to achieve volu-metric water saving performan
16、ce for water closets. This Standard provides guidance to manufacturers, distributors,purchasers, and jurisdiction officials, specifiers, or water utility planners for water conservation, to promote betterunderstanding between suppliers and users, and to furnish a basis for fair competition in furnis
17、hing such productsto meet the principal demands of the trade.This Standard includes a series of tests for retrofit dual flush devices for modification of the flush volume from installedwater closets that use 1.28 gal per flush or a greater volume, to reduce water consumption, that may apply such con
18、troloptions to provide two distinctive modes of operation. The devices considered to be covered in this Standard are thoserequired to provide at least a 30% reduction in water consumption in the reduced flush mode and still meet the requiredperformance levels of the Standard.The reduction in water c
19、loset flush volume discharges that may be made by a variety of techniques, other than one oranother single motion selector actuation and leaving the unit, are not covered by this Standard. Other active or passivetechniques, or methods not covered, include, but are not restricted to: installation of
20、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.The tests specified in this Standard for the removal of liquid wastes and
21、toilet tissues, or other comparable waste loads,are derived from industry experience, from field unit installations, independent laboratory evaluations by the methodsincluded herein, and research studies. The endeavor accounts for service requirements that are necessary for the sanitaryprotection pr
22、ovided by water closets and water conservation achievable through the installation of these devices. Thetests presented are from demonstrated applications by competent laboratory personnel and from other standards appli-cations giving results of suitable reproducibility for the purposes intended.ASM
23、E A112.19.10-1994 was the first edition of this Standard. The second edition, ASME A112.19.10-2003, changed theperformance requirements to provide for an acceptable amount of leakage. In addition, soft metric conversion of the U.S.customary units were added and a number of minor editorial errors hav
24、e been corrected.This revision of the 2003 edition has changed the scope of this Standard to cover retrofit devices which are to be fittedinto 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 A11
25、2 COMMITTEEStandardization of Plumbing 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,
26、City of San JoseJ. A. Ballanco, JB Engineering 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 Com
27、pliance, Inc.R. Emmerson, ConsultantR. 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 Va
28、lve Co.W. LeVan, Cast Iron Soil Pipe 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, they sh
29、ould not contain proprietary names orinformation.viRequests that are not in the format described above may be rewritten in the appropriate format by the Committee priorto being answered, which may inadvertently change the intent of the original request.Moreover, ASME does not act as a consultant for
30、 specific engineering problems or for the general application orunderstanding 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 assist
31、ance be obtained.ASME procedures provide for reconsideration of any interpretation when or if additional information that might affectan interpretation is available. Further, persons aggrieved by an interpretation may appeal to the cognizant ASMECommittee or Subcommittee. ASME does not “approve, ” “
32、certify, ” “rate, ” or “endorse” any item, construction, proprietarydevice, or activity.Attending Committee Meetings. The A112 Standards Committee regularly holds meetings and/or telephone confer-ences that are open to the public. Persons wishing to attend any meeting and/or telephone conference sho
33、uld contact theSecretary of the A112 Standards Committee. Future Committee meeting dates and locations can be found on theCommittee Page at http:/go.asme.org/A112committee.viiINTENTIONALLY LEFT BLANKviiiRETROFIT DUAL FLUSH DEVICES FOR WATER CLOSETS1 GENERAL1.1 ScopeThis Standard establishes physical
34、, material, testing, and marking requirements for retrofit dual flush devices that areinstalled within gravity-type water closet tanks and 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) u
35、nits of measure are to be regarded as thestandard. In this Standard, the inch/pound units are shown in parentheses. The values stated in each measurementsystem are equivalent in application; however, each system is to be used independently. Combining values from the twomeasurement systems can result
36、 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 the extent specified herein. Unless otherwise specified, thelatest edition shall apply.ASME A112.19.5/CSA B45.15, Flush Valves and Spuds for Wate
37、r Closets, Urinals, and TanksPublisher: The American Society of Mechanical Engineers (ASME), Two Park Avenue, New York, NY 10016-5990(www.asme.org)1.4 Definitionscycle time: the time beginning at the instant the flush release device is operated, and ending at the instant the water supplyvalve is com
38、pletely shut off and the water stops flowing.dual flush device: a mechanism for control of water closet discharge that provides the user with two options for selectiveoperation with either a normal fill volume or a reduced volume of water from the tank.flapper valve: see flush valve .flowing pressur
39、e: the pressure in a water supply pipe at the inlet to an open valve.flush tank (gravity type): a vessel that stores a predetermined quantity of water and includes a flushing device to dischargewater (plus some through-flow from the water supply line) into a water closet bowl or urinal.NOTE: A commo
40、n 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 fixture by discharging water into the fixture.sanitary: reasonably acceptable appearance an
41、d 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 integral trap seal into a gravity drainage system.water savings: the amount of flush volume
42、 water reduction in gallons or percentage when comparing consumption withand 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.ASME A112.19.10-201712 GENERAL REQUIREMENTS2.1 Functional OperationThe flush
43、 valve with dual flush feature shall be designed for retrofit use in water closets and shall fit within the tankpunching without interference with other operating parts. The user shall be required to activate a full or reduced flush byactuation of the selector control. After release, the selected fl
44、ush 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 torque test(e) fixture and flush valve leak test(f) leak ra
45、te and chemical resistance test3 TESTING3.1 Life Cycle TestingThe flush valve with dual flush device shall be evaluated for durability. The life cycle test shall be conducted as follows:(a) Install the specimen with a minimum sustained water head of 150 mm (6.0 in.) at 21C 5C (70F 10F).(b) Operate t
46、he specimen and allow it to return to its closed position for 30,000 cycles using a sequence of reduced tofull 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 RequirementsDuring and after th
47、e 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 INSTR UCTIONS4.1 MarkingsRetrofit dual flush devices s
48、hall 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 the following:(
49、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:(a) the procedures necessary to provide a full volume flush and procedures to establish a partial volume flush consis-tent with the requirements in para. 2.1(b) the steps necessary to ensure that the dual flush actuation selector and all parts move freely when the tank is emptyand normally filled
