Designation:D622−99(Reapproved2020)StandardTestMethodsforRubberHoseforAutomotiveAirandVacuumBrakeSystem1ThisstandardisissuedunderthefixeddesignationD622;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.ThesetestmethodswerepreparedjointlybytheSocietyofAutomotiveEngineersandtheAmericanSocietyforTestingandMaterials.1.Scope1.1Thesetestmethodsareintendedforuseintestingtheconventionaltypesofhoseemployedfortheoperationofairbrakeandvacuumbrakesystems,2eitheronasinglemotorvehicleorasconnectingortransmissionlinesinacombinationofvehicles.Thehosemaybeassembledwithsuitablemetalcouplingsormaybeasfabricatedforusewithdetachablefittings.Theterm“rubber”asusedinthesetestmethodsincludessyntheticcompoundsaswellascompoundsofnaturalrubber.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:3D380TestMethodsforRubberHoseD413TestMethodsforRubberProperty—AdhesiontoFlex-ibleSubstrateD471TestMethodforRubberProperty—EffectofLiquidsD573TestMethodforRubber—DeteriorationinanAirOvenD1149TestMethodsforRubberDeterioration—CrackinginanOzoneControlledEnvironmentD2240TestMethodforRubberProperty—Dur...
