27
B. deburring
 Useaknife,plasticpipedeburringtool,orfiletoremoveburrsfrom
theendof smalldiameter pipe.Besure toremoveall burrsfrom
aroundtheinsideaswellastheoutsideofthepipe.Aslightchamfer
(bevel)ofabout10°-15°shouldbeaddedtotheendtopermiteasier
insertionofthepipeintotheendofthefitting.Failuretochamferthe
edgeofthepipemayremovecementfromthefittingsocket,causing
thejointtoleak.
step B
C. Test dry t of the joint
Taperedttingsocketsaredesignedsothataninterfacedtshould
occurwhenthepipeisinsertedabout 1/3to2/3ofthewayinto the
socket.Occasionally,whenpipettingdimensionsareatthetolerance
extremes,itwillbe possibletofullyinsert drypipetothe bottomof
thettingsocket.Whenthishappens,asufcientquantityofcement
mustbeappliedtothejoint���tollthegapbetweenthepipeandtting.
Thegapmustbelledtoobtainastrong,leak-freejoint.
d. Inspection, cleaning, priming
Visuallyinspectthe inside of the pipe and tting sockets and
removealldirt,greaseormoisturewithacleandryrag.Ifwiping
fails to clean the surfaces, a chemical cleaner must be used.
Checkforpossibledamagesuchassplitsorcracksandreplace
if necessary.
depth-of-entry
 Markingthedepthofentryisaway tocheckifthepipehas
reachedthebottomofthefittingsocketinStep F.Measure
thefittingdepthandmarkthisdistanceonthepipeO.D.You
maywanttoaddseveralinchestothedistanceandmakea
secondmarkastheprimerandcementwillmostlikelydestroy
your first one.
 Applyprimerto thesurface ofthepipe andtting socketwith
anaturalbristle brush.Thisprocesssoftens andpreparesthe
PVCorCPVCforthesolventcementingstep.Movequicklyand
withouthesitationtothecementingprocedurewhilethesurfaces
arestillwetwithprimer.
e. application of solvent cement
• Applythesolvent cementevenlyand quicklyaroundthe
outsideofthepipeatawidthalittlegreaterthanthedepth
ofthettingsocket.
• Applyalightcoatofcementevenlyaroundtheinsideofthe
ttingsocket.Avoidpuddling.
• Applyasecondcoatofcementtothepipeend.
step e
f. joint assembly
 Workingquickly,insertthepipeintothettingsocketbottomand
givethepipeorttinga1/4turntoevenlydistributethecement.
Donotcontinuetorotatethepipeafterithashitthebottomofthe
ttingsocket.Agoodjointwillhavesufcientcementtomakea
beadallthewayaroundtheoutsideofthettinghub.Thetting
willhaveatendency toslidebackwhilethe cementisstillwet
soholdthejointtogetherforabout15seconds.
step f
G. cleanup and joint movement
 Removeallexcesscementfromaroundthepipeandttingwitha
drycottonrag.Thismustbedonewhilethecementisstillsoft.
 Thejointshouldnotbedisturbedimmediatelyafterthecementing
procedure,andsufcienttimeshouldbeallowedforpropercuring
ofthe joint. Exact drying time is difcult to predict because it
dependsonvariablessuchastemperature,humidityandcement
integrity.Formorespecicinformation,youshouldcontactyour
solvent cement manufacturer.
step G