Designation:D3261−15StandardSpecificationforButtHeatFusionPolyethylene(PE)PlasticFittingsforPolyethylene(PE)PlasticPipeandTubing1ThisstandardisissuedunderthefixeddesignationD3261;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thisspecificationcoverspolyethylene(PE)buttfusionfittingsforusewithpolyethylenepipe(IPS,DIPS,andISO)andtubing(CTS).Includedarerequirementsformaterials,workmanship,dimensions,marking,sustainedpressure,andburstpressure.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.2.ReferencedDocuments2.1ASTMStandards:2D1598TestMethodforTime-to-FailureofPlasticPipeUnderConstantInternalPressureD1599TestMethodforResistancetoShort-TimeHydraulicPressureofPlasticPipe,Tubing,andFittingsD1600TerminologyforAbbreviatedTermsRelatingtoPlas-ticsD2122TestMethodforDeterminingDimensionsofTher-moplasticPipeandFittingsD2513SpecificationforPolyethylene(PE)GasPressurePipe,Tubing,andFittingsD3350SpecificationforPolyethylenePlasticsPipeandFit-tingsMaterialsF412TerminologyRelatingtoPlasticPipingSystems2.2FederalStandard:Fed.Std.No.123MarkingforShipment(CivilAgencies)32.3MilitaryStandard:MIL-STD-129MarkingforShipmentandStorage32.4NationalSanitationFoundationStandard:StandardNo.14forPlasticPipingComponentsandRelatedMaterials42.5PlasticPipeInstitute5PPITR-3PoliciesandProceduresforDevelopingHydro-staticDesignBasis(HDB),PressureDesignBasis(PDB),StrengthDesignBasis(SDB),andMinimumRequiredStrength(MRS)RatingsforThermoplasticPipingMate-rialsorPipe7PPITR-4HDB/SDB/PDB/MRSListedMaterials,PPIList-ingofHydrostaticDesignBasis(HDB),StrengthDesignBasis(SDB),PressureDesignBa...
