1、AN AMERICAN NATIONAL STANDARDASME A112.14.3-2018Revision of ASME A112.14.3-2000 (R2014)Hydromechanical Grease InterceptorsASME A112.1 4.3-2018Revision of ASME A112.1 4.3-2000 (R201 4)HydromechanicalGreaseInterceptorsAN AMERICAN NATIONAL STANDARDxDate of Issuance: May 18, 2018This Standard will be re
2、vised when the Society appr oves the issuance of a new edition.ASME issues writt en replies to inquiries concerning int erpretations of technical aspects of this Standard. Interpretations arepublished on the Committ ee web page and under http:/ /go.asme.org/InterpsDatabase. Periodically certain acti
3、ons of the ASMEA112 Committ ee may be published as Cases. Cases are published on the ASME website under the A112 Committ ee Page atht tp:/go.asme.org/A112committ ee as they are issued.Errata to codes and stan dards may be post ed on the ASME website under the Committ ee Pages to provide corrections
4、toincorrectly published item s, or to correct typographical or grammatical err ors in codes and s tandards. Such errata shall be usedon the date post ed.The A112 Committ ee Page can be found at http:/ /go.asme.org/A112committ ee. There is an option available to automaticallyreceive an e-mail notific
5、ation when errata are post ed to a particular code or standard. This option can be found on theappr opriate Committ ee Page aft er selecting “ Errata ” in the “ Publication Information ” section.ASME is the regis tered trademark of The American Society of Mechanical Engineers.This code or standard w
6、as developed under proc edures accredited as meeting the criteria for American National Standards. The StandardsCommit tee that approved the code or standard was balanced to assure that individuals fro m competent and concerned int erests have had anopportunity to participate. The pr oposed code or
7、standard was made available for public review and comment that provides an opportunityfor additional public input fro m industry , academia, regulatory agencies, and the public-at -large.ASME does not “ appr ove, ” “ rate, ” or “ endorse ” any it em, construction, proprietary device, or activity .AS
8、ME does not take any position with respect to the validity of any patent rights assert ed in connection with any items mentioned in thisdocument, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable lett ers patent, norassume any such liab
9、ility . Users of a code or standard are expressly advised that determination of the validity of any such patent rights, and therisk of infringement of such rights, is entirely their own responsibility .Participation by federal agency representative(s) or person(s) affiliated with industry is not to
10、be interpret ed as government or industryendor sement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME proceduresand policies, which precludes the issuance of int erpretations by individuals.No part of
11、 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 SOCIETY OF MECHANICAL ENGINEERSAll r
12、ights reservedPrinted in U.S.A.CONTENTSForeword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ivCommittee Roster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13、 . . . . . . . . . . . . . . . . . . . . . vCorrespondence With the A112 Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14、 . . . . . . . . . . 12 General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Label
15、ing, Installation, and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 Sizing and Maintenance of Grease Interceptors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 Applications . . . . . . . . . . . . . . . . . . . . . .
16、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 Flow Control and/or Vent . . . . . . . . . . . . . . . . . . . . . . . . . . .
17、. . . . . . . . . . . . . . . . . . . . . . . . 10Nonmandatory AppendixA Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Figures1 Grease Interceptor Test Configuration for Rating Types A and B . . . . . . . . . .
18、 . . . . . . . . . . . . . . 32 Grease Interceptor Test Configuration for Rating Type C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Grease Interceptor Test Configuration for Rating Type D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Grease Interceptor Serving Trapped
19、 and Vented Sink Flow Control Air Intake IntersectsVent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 Grease Interceptor Serving Dishwasher Flow Control Air Intake Intersects Vent . . . . . . . . . . 116 Grease I
20、nterceptor Serving Two Individually Trapped and Vented Sinks Flow Control Air IntakeIntersects Vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 Grease Interceptor Serving Trapped and Vented Sinks Flow Control Air Intake Inters
21、ectsVent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Tables1 Standard Flow Rates and Grease Retention Capacity Ratings for Grease Interceptors . . . . . . . . . 22 Procedure for Sizing Grease Interceptors . . . .
22、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 Interceptor Sizing Method Utilizing Maximum Pipe Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Form3.6-1 Grease Interceptor Rating Test Reporting Form . . . . . . . . . . . . . . . . . . . . . . . . . .
23、 . . . . . . . . . . 8iiiFOREWORDIn 1994, the Plumbing and Drainage Institute (PDI) agreed to work with the American Society of Mechanical Engineersfor the development of this Standard. This Standard includes criteria for testing and rating of grease interceptors; generalrequirements for these appur
24、tenances; and an appendix of valuable sizing, installation, and maintenance data.PDI has a membership of organizations that manufacture products for the plumbing industry. The basic aim of PDI is tocontribute its combined talents and resources to the advancement of plumbing engineering and the plumb
25、ing 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 prevent grease accumulations from clogging connecting piping andsewer
26、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.For the next 50 years, there was no coordinated effort to standardize ratings, or to e
27、stablish performance requirementsfor 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 requirements.In late 1940 and early 1941, prior to the United
28、 States entry into World War II, grease interceptors were specified forArmy posts to meet specifications of the Construction Division, Office of the Quartermaster General. These specificationscalled for interceptors, which proved inadequate; it immediately became apparent that a comprehensive engine
29、ering andtesting program was needed to properly rate grease interceptors. Apart from prevention of sewage systems clogging,properly rated and sized grease interceptors were essential to the recovery of oils and grease so badly needed for the wareffort. As a result, a series of conferences involving
30、the Research Committee of the Plumbing and Drainage ManufacturersAssociation (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 ofgr
31、ease interceptors manufactured at that time.The program that emerged from these conferences included exhaustive laboratory testing of each grease interceptor atthe Iowa Institute of HydrauIic Research at Iowa State University. This phase of the program was covered in a compre-hensive report issued i
32、n August 1945. Using the guidelines established in Iowa, the Research Committee continued thetesting program at the United States Testing Company, Inc., which culminated in the publication of Standard PDI-G101 in1949 and the rating of applicable grease interceptors.Since its initial publication, Sta
33、ndard PDI-G101 has been widely accepted and is referenced in most plumbing codes. Ithas 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 st
34、andard:(a) adds sizes above 100 gpm(b) include a new drawing to show additions for testing 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 capacityThe Committee r
35、ecognizes that a number of sewerage treatment communities and other jurisdictions have establishedvarious maximum limits of fats, oils, and greases (FOG) in the waste stream. The most common of these is 100 mg/L or 100gpm. The Committee decided that until a specific maximum limit is universally acce
36、pted, no number should be included inthe Standard.ASME A112.14.3 was approved as an American National Standard on January 10, 2018.ivASME A112 COMMITTEEStandardization of Plumbing Materials and Equipment(The following is the roster of the Committee at the time of approval of this Standard.)STANDARDS
37、 COMMITTEE OFFICERSW. M. Smith, ChairS. Rawalpindiwala, Vice ChairA. L. Guzman Rodriguez, SecretarySTANDARDS COMMITTEE PERSONNELR. K. Adler, City of San JoseJ. A. Ballanco, JB Engineering and Code ConsultingJ. E. Bertrand, Moen, Inc.A. Bonlender, Bradley Corp.R. Burnham, Zurn Industries, LLCM. Campo
38、s, ICC Evaluation Service, LLCW. E. Chapin, Professional Code Consulting, LLCP. V. DeMarco, IAPMO GroupN. E. Dickey, CSA GroupG. S. Duren, Code Compliance, Inc.R. Emmerson, ConsultantR. L. George, Plumb- Tech Design and Consulting Services, LLCA. L. Guzman Rodriguez, The American Society of Mechanic
39、alEngineersG. 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 InstituteD. Marbry, Fluidmaster, Inc.R. Mata, CSA GroupL. A. Mercer, IAPMO GroupD. Orton, NSF InternationalS. Rawalp
40、indiwala, Kohler Co.S. A. Remedios, Remedios ConsultantM. Sigler, Plumbing Manufacturers InternationalG. L. Simmons, Charlotte Pipe however, they should not contain proprietary names orinformation.viRequests that are not in the format described above may be rewritten in the appropriate format by the
41、 Committee priorto 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 orunderstanding of the Standard requirements. If, based on the inquiry information submitt
42、ed, it is the opinion ofthe Committee that the Inquirer should seek assistance, the inquiry will be returned with the recommendationthat such assistance be obtained.ASME procedures provide for reconsideration of any interpretation when or if additional information that might affectan interpretation
43、is available. Further, persons aggrieved by an interpretation may appeal to the cognizant ASMECommittee or Subcommittee. ASME does not “approve, ” “certify, ” “rate, ” or “endorse” any item, construction, proprietarydevice, or activity.Attending Committee Meetings. The A112 Standards Committee regul
44、arly holds meetings and/or telephone confer-ences that are open to the public. Persons wishing to attend any meeting and/or telephone conference should contact theSecretary of the A112 Standards Committee. Future Committee meeting dates and locations can be found on theCommittee Page at http:/go.asm
45、e.org/A112committee.viiINTENTIONALLY LEFT BLANKviiiHYDROME CHANICAL GREASE INTERCEPTORS1 GENERAL1.1 ScopeThis Standard covers general product requirements aswell as the performance criteria for the testing and ratingof hydromechanical grease interceptors, rated by flow ingallons per minute (gpm) or
46、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 StandardsAs a prerequisite for evaluation, a product that tested tothe requirements of t
47、his Standard shall satisfy the require-ments of the latest edition of the following standards, asapplicable:ASME A112.3.1, Stainless Steel Drainage SystemsASME B1.20.1, Pipe ThreadsPublisher: The American Society of Mechanical Engineers(ASME), Two Park Avenue, New York, NY 10016-5990(www.asme.org)AS
48、TM 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 D2665, Standard Specification for Poly (VinylChl
49、oride) (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 Definitionsbreakdown grease capacity: the number of pounds or kilo-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%.directly connected: a grease interceptor that is designed torece
