Designation:D2661−21AnAmericanNationalStandardStandardSpecificationforAcrylonitrile-Butadiene-Styrene(ABS)Schedule40PlasticDrain,Waste,andVentPipeandFittings1ThisstandardisissuedunderthefixeddesignationD2661;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thisspecificationcoversfittingsandsingleandcoex-trudedacrylonitrile-butadiene-styrene(ABS)plasticdrain,waste,andventpipe(DWV)madetoSchedule40ironpipesizes(IPS).Plasticwhichdoesnotmeetthematerialrequire-mentsspecifiedinSection5isexcludedfromsinglelayerandallcoextrudedlayers.1.2SpecificationforfittingsforusewithpipemeetingtherequirementsofthisspecificationaregiveninAnnexA1.1.3Acrylonitrile-butadiene-styreneplastic,whichdoesnotmeetthedefinitionofvirginABSplasticasgivenin3.2.2,isexcluded,asperformanceofplasticotherthanthosedefinedasvirginwasnotdetermined.ABSreworkplastic,whichmeetstherequirementsofreworkplasticasgivenin5.3,isaccept-able.1.4ReprocessedplasticorrecycledplasticasdefinedinTerminologyD883isexcluded.1.5Recommendationsforstorage,joining,andinstallationareprovidedinAppendixX1,AppendixX2,andAppendixX3,respectively.1.6Thetextofthisspecificationreferencesnotes,footnotes,andappendixeswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthespecification.1.7Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.8Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheW...
