Owner manual

23
VENT PIPE PREPARATION
1. INITIAL PREPARATION
 A. Makesurethesolventcementyouareplanningtouseis
designedforthespecicapplicationyouareattempting.
 B. Knowthephysicalandchemicalcharacteristicsandlimitationsof
thePVCandCPVCpipingmaterialsthatyouareabouttouse.
 C. Knowthereputationofyourmanufacturerandtheirproducts.
 D. Knowyourownqualicationsorthoseofyourcontractor.The
solventweldingtechniqueofjoiningPVCandCPVCpipeisa
specializedskilljustasanyotherpipettingtechnique.
 E. Closelysupervisetheinstallationandinspectthenished
jobbeforestart-up.
 F. Contactthemanufacturer,supplier,orcompetentconsulting
agencyifyouhaveanyquestionsabouttheapplicationor
installationofPVCandCPVCpipe.
 G. Takethetimeandefforttodoaprofessionaljob.Shortcuts
willonlycauseyouproblemsanddelaysinstart-up.Byfar,
themajorityoffailuresinPVCandCPVCsystemsarethe
resultofshortcutsand/orimproperjoiningtechniques.
2. SELECTION OF MATERIALS
• CuttingDevice-SaworPipeCutter
• DeburringTool,Knife,File,orBevelingMachine(2”andabove)
• Brush-PureBristle
• Rag-Cotton(NotSynthetic)
• PrimerandCleaner
• Solvent Cement - PVC for PVC Components and CPVC for
CPVCComponents
• Containers-MetalorGlasstoholdPrimerandCement.Select
thetypeofPVCorCPVCmaterialstobeusedonthebasisof
theirapplicationwithrespecttochemicalresistance,pressure
rating,temperaturecharacteristics,etc.
• InsertionTool - Helpfulfor larger diameter pipe andttings6
inches(15.2cm)andabove.
PRIMER
ItisrecommendedthatTetrahydrofuran(THF)beusedtopreparethe
surfacesofpipeandttingsforsolventwelding.Donotusewater,
rags,gasolineoranyothersubstitutesforcleaningPVCorCPVC
surfaces.AchemicalcleanersuchasMEKmaybeused.
CEMENT
Thecementshouldbeabodiedcementofapproximately500to
1600centipoiseviscositycontaining10-20%(byweight)virginPVC
material solvated with tetrahydrofuran (THF). Small quantities of
dimethylformamide(DMF)maybeincludedtoactasaretarding
agenttoextendcuringtime.Selectthepropercement;Schedule40
cementshouldbeusedforSchedule40pipe.Neveruseall-purpose
cements,commercialgluesandadhesivesorABScementtojoin
PVCorCPVCpipeandttings.
APPLICATORS
Select a suitable pure bristle type paint brush. Use a proper
widthbrushorrollertoapplytheprimerandcement,seeTable2.
Speedy application ofcement is important due to its fast drying
characteristics.IMPORTANTNOTE:Adaubertypeapplicatorshould
onlybeusedonpipesizes2”andbelow.Forlargerdiameterpipe,
abrushorrollermustbeused.
TABLE 2
RECOMMENDED BRUSH* SIZE FOR PRIMER
AND CEMENT APPLICATIONS
Nominal Pipe Size Brush Width
(IPS)
2 1.5” (3.8 cm)
3 1.5” - 2.5” (3.8 cm - 6.4 cm)
*USE ONLY NATURAL BRISTLE
3. MAKING THE JOINT
A. Cutting
 Pipemustbesquarelycuttoallowfortheproperinterfacingofthe
pipeendandthettingsocketbottom.Thiscanbeaccomplished
withamiterboxsaworwheeltypecutter.Wheeltypecuttersare
notgenerallyrecommendedforlargerdiameterssincetheytend
toarethecornerofthepipeend.Ifthistypeofcutterisused,
theareontheendmustbecompletelyremoved.
NOTE:Powersawsshouldbespecicallydesignedtocutplasticpipe.
STEP A