Designation:F2768−09StandardSpecificationforModifiedStubACMEThreadJointwithElastomericSealinPlasticPipingComponents1ThisstandardisissuedunderthefixeddesignationF2768;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThisspecificationcoversaModifiedStubACMEThreadJointwithanElastomericSealusedtosealthejointcomponentsinplasticpipingcomponents,or(ifapplicable)tocomponentsmadeofothernon-plasticmaterialsusedforplasticpipingcomponentsusedinturfirrigationsystems.1.2Thisspecificationestablishesrequirementsfordimen-sionsandgaugingofModifiedStubACMEThreadandElastomericseal.1.3Taperedpipethreadsarenotcoveredinthisspecifica-tion.NOTE1—Theterms“bottomout”and“backoff”areusedtoimplycompleteengagementofthethreadedconnectionandun-threadingoftheconnectionanddonotimplyusingapipewrenchorothertoolswhichwoulddamageplasticpipeandfittings.1.4Thevaluesstatedininch-poundunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D1600TerminologyforAbbreviatedTermsRelatingtoPlas-ticsF412TerminologyRelatingtoPlasticPipingSystemsF477SpecificationforElastomericSeals(Gaskets)forJoin-ingPlasticPipeF1970SpecificationforSpecialEngineeredFittings,Appur-tenancesorValvesforuseinPoly(VinylChloride)(PVC)orChlorinatedPoly(VinylChloride)(CPVC)Systems3.Terminology3.1TerminologyisinaccordancewithTerminologyF412andabbreviationsareinaccordancewithTerminologyD1600,unlessotherwiseindicated.4.SignificanceandUse4.1Connectionsmadeinaccordancewiththesespecifica-tionsconsistofaModifiedStubACMEextern...
