Designation:D2855−20AnAmericanNationalStandardStandardPracticefortheTwo-Step(PrimerandSolventCement)MethodofJoiningPoly(VinylChloride)(PVC)orChlorinatedPoly(VinylChloride)(CPVC)PipeandPipingComponentswithTaperedSockets1ThisstandardisissuedunderthefixeddesignationD2855;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thispracticedescribesatwo-step(primerandsolventcement)methodofjoiningpoly(vinylchloride)(PVC)orchlorinatedpoly(vinylchloride)(CPVC)pipeandpipingcomponentswithtaperedsockets.NOTE1—Simplifiedproceduresmaybeallowedinnon-pressureappli-cationswherelocalcodespermit.NOTE2—Whereconflictsoccurbetweenthecodeandthemanufactur-er’sinstallationinstructions,themorerestrictiveprovisionsapply.1.2Theproductscoveredbythispracticeareintendedforusewiththedistributionofpressuredliquidsonly,whicharechemicallycompatiblewiththepipingmaterials.Duetoinherenthazardsassociatedwithtestingcomponentsandsys-temswithcompressedairorothercompressedgases,somemanufacturersdonotallowpneumatictestingoftheirproducts.Consultwithspecificproduct/componentmanufacturersfortheirspecifictestingprocedurespriortopneumatictesting.NOTE3—Pressurized(compressed)airorothercompressedgasescontainlargeamountsofstoredenergywhichpresentserioussafetyhazardsshouldasystemfailforanyreason.1.3Thisstandardpracticedoesnotaddresstheone-stepmethodofjoiningpipeandpipingcomponentswithtaperedsocketswithsolventcementwithouttheuseofprimer.Fortheone-stepmethodseePracticeF3328.1.4ThetechniquescoveredareapplicabletojoiningPVCtoPVCorCPVCtoCPVCpipeandpipingcomponentswithtaperedsockets.Intheremainderofthisstandardpractice,theterm“pipingcomponentswithtaperedsockets”,whetheritbebellendpipe,spigotconnections,oranyothertypeoftaperedconnectio...
