1、AN AMERICAN NATIONAL STANDARDASME A112.14.3-2018Revision of ASME A112.14.3-2000 (R2014)Hydromechanical Grease InterceptorsASME A112.14.3-2018Revision of ASME A112.14.3-2000 (R2014)HydromechanicalGreaseInterceptorsAN AMERICAN NATIONAL STANDARDxDate of Issuance: May 18, 2018This Standard will be revis
2、ed 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 arepublishedontheCommitteewebpageandunderhttp:/go.asme.org/InterpsDatabase.PeriodicallycertainactionsoftheASMEA112 Com
3、mittee may be published as Cases. Cases are published on the ASME website under the A112 Committee Page athttp:/go.asme.org/A112committee as they are issued.Errata to codes and standards may be posted on the ASME website under the Committee Pages to provide corrections toincorrectlypublisheditems,or
4、tocorrecttypographicalorgrammaticalerrorsincodesandstandards.Sucherratashallbeusedon the date posted.The A112 Committee Page can be found at http:/go.asme.org/A112committee. There is an option available to automaticallyreceive an e-mail notification when errata are posted to a particular code or sta
5、ndard. This option can be found on theappropriate Committee Page after selecting “Errata” in the “Publication Information” section.ASME is the registered trademark of The American Society of Mechanical Engineers.ThiscodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmericanNa
6、tionalStandards.TheStandardsCommitteethatapprovedthecodeorstandardwasbalancedtoassurethatindividualsfromcompetentandconcernedinterestshavehadanopportunity to participate.The proposed code orstandardwas made available for public review and commentthat provides an opportunityfor additional public inpu
7、t 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 mentio
8、ned in thisdocument,anddoesnotundertaketoinsureanyoneutilizingastandardagainstliabilityforinfringementofanyapplicableletterspatent,norassumeanysuchliability.Usersofacodeorstandardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrights,andtherisk of infringement of such rights, is enti
9、rely their own responsibility.Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interpreted as government or industryendorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordanc
10、e with the established ASME proceduresand 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 Mecha
11、nical 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Testing . . . . . . . .
14、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Labeling, Installation, and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 Sizing and Maintenance of Grease Interceptors . . . . . .
15、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16、 . . . . . . . . . . . . . . . . . . . 98 Flow Control and/or Vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Nonmandatory AppendixA Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17、 . . . . . . . . . . . . . 13Figures1 Grease Interceptor Test Configuration for Rating Types A and B . . . . . . . . . . . . . . . . . . . . . . . . 32 Grease Interceptor Test Configuration for Rating Type C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Grease Interceptor Test Config
18、uration for Rating Type D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Grease Interceptor Serving Trapped and Vented Sink Flow Control Air Intake IntersectsVent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19、 . . . 115 Grease Interceptor Serving Dishwasher Flow Control Air Intake Intersects Vent . . . . . . . . . . 116 Grease Interceptor Serving Two Individually Trapped and Vented Sinks Flow Control Air IntakeIntersects Vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20、 . . . . . . . . . . . . . . . . . 117 Grease Interceptor Serving Trapped and Vented Sinks Flow Control Air Intake IntersectsVent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Tables1 Standard Flow Rates and Grease
21、 Retention Capacity Ratings for Grease Interceptors . . . . . . . . . 22 Procedure for Sizing Grease Interceptors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 Interceptor Sizing Method Utilizing Maximum Pipe Capacity . . . . . . . . . . . . . . . . . . . . .
22、 . . . . . 10Form3.6-1 Grease Interceptor Rating Test Reporting Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8iiiFOREWORDIn1994,thePlumbingandDrainageInstitute(PDI)agreedtoworkwiththeAmericanSocietyofMechanicalEngineersforthedevelopmentofthisStandard.ThisStandardincl
23、udescriteriafortestingandratingofgreaseinterceptors;generalrequirements for these appurtenances; and an appendix of valuable sizing, installation, and maintenance data.PDIhasamembershipoforganizationsthatmanufactureproductsfortheplumbingindustry.ThebasicaimofPDIistocontribute its combined talents an
24、d resources to the advancement of plumbing engineering and the plumbing industry.This Standard was developed with the assistance of PDI.For more than a century, grease interceptors have been used in plumbing wastewater systems to permit free flow ofdrainage from sinks and similar equipment and to pr
25、event grease accumulations from clogging connecting piping andsewer lines. In 1883, one Nathaniel T. Whiting of California applied for a patent on a grease trap, which was issued inOctober 1884. Whitings design principle does not differ greatly from present-day grease interceptors.Forthenext50years,
26、therewasnocoordinatedefforttostandardizeratings,ortoestablishperformancerequirementsfor grease interceptors. Ratings were determined by each manufacturer for its interceptors, which were produced in avariety of sizes and types in an effort to meet engineers specifications and satisfy code requiremen
27、ts.Inlate1940andearly1941,priortotheUnitedStatesentryintoWorldWarII,greaseinterceptorswerespecifiedforArmypoststomeetspecificationsoftheConstructionDivision,OfficeoftheQuartermasterGeneral.Thesespecificationscalledforinterceptors,whichprovedinadequate;itimmediatelybecameapparentthatacomprehensiveeng
28、ineeringandtesting program was needed to properly rate grease interceptors. Apart from prevention of sewage systems clogging,properlyratedandsizedgreaseinterceptorswereessentialtotherecoveryofoilsandgreasesobadlyneededforthewareffort.Asaresult,aseriesofconferencesinvolvingtheResearchCommitteeofthePl
29、umbingandDrainageManufacturersAssociation (now PDI), representatives of the Quartermaster General, Surgeon General, Army Corps of Engineers, andothers were held to develop a testing program to establish flow rates and grease holding capacity for uniform rating ofgrease interceptors manufactured at t
30、hat time.Theprogramthatemergedfromtheseconferencesincludedexhaustivelaboratorytestingofeachgreaseinterceptoratthe Iowa Institute of HydrauIic Research at Iowa State University. This phase of the program was covered in a compre-hensive report issued in August 1945. Using the guidelines established in
31、 Iowa, the Research Committee continued thetestingprogramattheUnitedStatesTestingCompany,Inc.,whichculminatedinthepublicationofStandardPDI-G101in1949 and the rating of applicable grease interceptors.Sinceitsinitialpublication,StandardPDI-G101hasbeenwidelyacceptedandisreferencedinmostplumbingcodes.It
32、has been reprinted in its original format many times.PDI currently maintains a grease interceptor testing, rating, and certification facility. This revision includes thefollowing changes to the 2018 edition of the standard:(a) adds sizes above 100 gpm(b) include a new drawing to show additions for t
33、esting 75 and 100 gpm sizes and larger(c) eliminate efficiency “B”(d) add definition for hydromechanical grease interceptor(e) add additional sizing, see Table 3 based on maximum flow for pipe capacityTheCommitteerecognizesthatanumberofseweragetreatmentcommunitiesandotherjurisdictionshaveestablished
34、variousmaximumlimitsoffats,oils,andgreases(FOG)inthewastestream.Themostcommonoftheseis100mg/Lor100gpm.TheCommitteedecidedthatuntilaspecificmaximumlimitisuniversallyaccepted,nonumbershouldbeincludedinthe Standard.ASME A112.14.3 was approved as an American National Standard on January 10, 2018.ivASME
35、A112 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. Adle
36、r, 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, IAPMO GroupN. E. Dickey, CSA GroupG. S. Duren,
37、 Code Compliance, 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,
38、Sloan Valve Co.W. LeVan, Cast Iron Soil Pipe InstituteD. Marbry, Fluidmaster, Inc.R. Mata, CSA GroupL. A. Mercer, IAPMO GroupD. Orton, NSF InternationalS. Rawalpindiwala, Kohler Co.S. A. Remedios, Remedios ConsultantM. Sigler, Plumbing Manufacturers InternationalG. L. Simmons, Charlotte Pipe however
39、theyshouldnotcontainproprietarynamesorinformation.viRequeststhatarenotintheformatdescribedabovemayberewrittenintheappropriateformatbytheCommitteepriorto being answered, which may inadvertently change the intent of the original request.Moreover, ASME does not act as a consultant for specific enginee
40、ring 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 assistance be obtained.
41、ASMEproceduresprovideforreconsiderationofanyinterpretationwhenorifadditionalinformationthatmightaffectan interpretation is available. Further, persons aggrieved by an interpretation may appeal to the cognizant ASMECommitteeorSubcommittee.ASMEdoesnot“approve,”“certify,”“rate,”or“endorse”anyitem,const
42、ruction,proprietarydevice, or activity.AttendingCommitteeMeetings. TheA112StandardsCommitteeregularlyholdsmeetingsand/ortelephoneconfer-encesthatareopentothepublic.Personswishingtoattendanymeetingand/ortelephoneconferenceshouldcontacttheSecretary of the A112 Standards Committee. Future Committee mee
43、ting dates and locations can be found on theCommittee Page at http:/go.asme.org/A112committee.viiINTENTIONALLY LEFT BLANKviiiHYDROMECHANICAL GREASE INTERCEPTORS1 GENERAL1.1 ScopeThis Standard covers general product requirements aswellas the performancecriteriafor the testing and ratingof hydromechan
44、ical grease interceptors, rated by flow ingallons per minute (gpm) or liters per minute (L/min).1.2 Units of MeasurementValues are stated in U.S. Customary units and in theInternational System of Units (SI). The U.S. Customaryunits shall be considered as the standard.1.3 Reference StandardsAsaprereq
45、uisiteforevaluation,aproductthattestedtotherequirementsofthisStandardshallsatisfytherequire-ments of the latest edition of the following standards, asapplicable:ASME A112.3.1, Stainless Steel Drainage SystemsASME B1.20.1, Pipe ThreadsPublisher:TheAmericanSocietyofMechanicalEngineers(ASME), Two Park
46、Avenue, New York, NY 10016-5990(www.asme.org)ASTM A53/A53M, Standard Specification for Pipe, Steel,Black and Hot-Dipped, Zinc-Coated, Welded andSeamlessASTM A888, Standard Specification for Hubless Cast IronSoil Pipe and Fittings for Sanitary and Storm Drain,Waste, and Vent Piping ApplicationsASTM D
47、2665, Standard Specification for Poly (VinylChloride) (PVC) Plastic Drain, Waste, and Vent Pipeand FittingsPublisher: American Society for Testing and Materials(ASTM International), 100 Barr Harbor Drive, P.O.Box C700, West Conshohocken, PA 19428-2959(www.astm.org)1.4 Definitionsbreakdowngreasecapac
48、ity:thenumberofpoundsorkilo-grams of grease a grease interceptor retains at a specificflow rate at the last increment preceding two successiveincrements in which either the average efficiency is lessthan 90% or the incremental efficiency is less than 80%.directlyconnected:agreaseinterceptorthatisdes
49、ignedtoreceivethedischargedirectlyfromfixtureswithoutanairgaporairbreakandbedirectlyorindirectlyconnectedtothe plumbing drainage system.flow control, unvented: a device installed upstream of orwithin the interceptor, having an orifice that controls therate of flow through the interceptor.flow control, vented: a device installed upstream of theinterceptor having an orifice and air intake (vent) down-stream from the orifice which allows air to be drawn intotheflow.Thedevicethatcontrolstherateofflowthroughthe interceptor, and an air intake (vent) downstream tothe interceptor
