Rehau PEXa Plumbing Installation guide

Rehau
Brand
Rehau
Model
PEXa Plumbing
Type
Installation guide
PEXa PLUMBING DESIGN AND INSTALLATION GUIDE
RAUPEX
®
UV Shield Pipe and EVERLOC+
®
Compression-sleeve Fittings
1. Scope 3
2. System Overview 4
2.1 Application 4
2.2StandardsandCertications 4
2.3Specication 5
2.4Warranty 5
2.5DesignServices 5
3. RAUPEX PEXa Pipe 6
3.1 Pipe Properties 6
3.2PipeDimensionsandWeights 6
3.3PipeMarkings 7
3.4PressureandTemperatureRatings 7
3.5ExcessiveTemperatureandPressureCapability 7
3.6CorrosionResistance 8
3.7ChlorineResistance 8
3.8UltravioletResistance 8
3.9BendRadius 9
3.10ChemicalCompatibility 9
3.11FreezeBreakResistance 9
3.12 Condensation 9
3.13 Pressure Loss 9
4. EVERLOC+ Compression-sleeve Fittings 10
4.1FittingScope 10
4.2FittingAssembly 12
4.3 Installation Considerations 12
4.4EVERLOC+Compression-sleeveTools 15
CONTENTS
Forupdatestothispublicationandthemostcurrenttechnicalinstructions,safetyinformationandmanufacturer’srecommendations,visitwww.na.rehau.com/resourcecenter
5. Design Considerations 17
5.1PipeSizing 17
5.2EquivalentLengthofFittings 18
5.3PipingLayouts 19
5.4ThermalExpansionandContraction 20
5.5InstallationinFire-ratedAssemblies 22
5.6OverheadInstallations 25
5.7WaterQuality 25
5.8HotWaterRecirculation 26
5.9WaterHammer 26
6. Installation Considerations 27
6.1LocalCodeApprovals 27
6.2Packaging,Transport,HandlingandStorage 27
6.3UncoilingPipe 27
6.4BendingPipe 27
6.5DistanceBetweenFittings 28
6.6PipeProtection 28
6.7Insulation 29
6.8InstallationBelow-grade,in-slab 29
6.9FixtureConnectionCommonComponents 29
6.10WaterHeaterConnections 30
6.11SupportingRAUPEXPipe 31
6.12SupportingEVERLOC+Fittings 31
6.13CopperSoldering 31
6.14KinkRepair 32
6.15ThawingFrozenPipe 32
6.16Disinfection 32
6.17PressureTesting 33
2
This technical information applies to the REHAU PEXa
plumbing system and specically the assembly and use of the
EVERLOC+
®
compression-sleeve system with RAUPEX
®
UV shield pipe (PEXa pipe) intended for use in hot- and cold-
water potable distribution systems.
Forprofessionaluseonly.Personsusingthisguidemustbeexperi-
encedandappropriatelylicensedcontractors,whohaveanunder-
standingoftheprinciplesandpracticesfortheinstallationofhot-and
cold-waterpotabledistributionsystems.
Theinformationpresentedinthisguideisintendedtodemonstratethe
properassemblymethodandinstallationrecommendationsforthe
REHAUPEXaplumbingsystem.Itistheresponsibilityofthelicensed
contractortochecktheprevailinglocalcodesandtoverifythat
technicalinformationpresentedinthisguideisappropriatefora
particular installation.
Nothinginthisguidesupersedesnationalorlocalcoderequirements
ortherecommendationsofothermanufacturersregardingtheir
components.Observeallapplicablenational,stateandlocallaws,
regulations,standards,codesandordinances.IfyoubelieveREHAU
productinformationconictswithapplicablecoderequirements,
industrystandards,ortherecommendationsofothermanufacturers
regardingtheircomponents,contacttheREHAUdistributorinyour
areaandconsultwiththebuildingauthorityhavingjurisdictionbefore
installingtheREHAUPEXaplumbingsystem.
Beforestartingtheinstallationprocess,readtheREHAUPEXa Limited
Warranty,availableatwww.na.rehau.com/warranties.Itcanalsobe
obtainedfromyourauthorizedREHAUdistributororbywritingto
REHAUConstructionLLC,1501EdwardsFerryRoadNE,LeesburgVA
20176US.
Properinstallationistheresponsibilityoftheinstallingcontractor.
ReviewtheREHAUTechnical Guidelinespriortoinstallationofthe
REHAUPEXaplumbingsystem.REHAUTechnical Guidelines are
denedintheREHAUPEXa Limited Warranty as:Themostcurrentand
applicableversionsofallthetechnicalliteratureavailableonthe
REHAUNorthAmericawebsiteatwww.na.rehau.com/resourcecenter,
including,butnotlimitedto,technicalmanuals,instructionguides,
technicalbulletins,submittalsandREHAUAcademytrainingpresenta-
tions.ChecktheREHAUResourceCenter(www.na.rehau.com/
resourcecenter)forthelatestupdates.
ContacttheREHAUdistributorinyourareaifyoudonotunderstand
theinformationinthismanualorifyouhavequestionsaboutthe
REHAUTechnical Guidelines.
Thisguidecontainssafety-relatedinformationthatrequiresyour
specialattention.Itisindicatedwiththesafetyalertsymbolandthe
signalwordsdescribedbelow:
DANGER
Indicatesahazardoussituationwhich,ifnot
avoided,willresultindeathorseriousinjury.
WARNING
Indicatesahazardoussituationwhich,ifnot
avoided,couldresultindeathorserious
injury.
CAUTION
Indicatesahazardoussituationwhich,ifnot
avoided,couldresultinminorormoderate
injury.
NOTICE
Indicatesariskofpropertydamage.
Onlytrainedpersonnelshouldbeengagedintheinstallationprocess.
FollowtheinstructionsinthisguideandotherREHAUTechnical
Guidelinesandusecommonsensetoreducetheriskofinjuryor
propertydamage.
WARNING
ReadtheinstructionmanualfortheEVERLOC+
compression-sleevetoolsbeforeuseandfollowall
safetyprecautions-improperusecancauseserious
personalinjury
WARNING
EVERLOC+compression-sleevetoolsuseastrong
hydraulicforcetoexpandPEXapipeandcompress
componentsoftheREHAUEVERLOC+
compression-sleevesystem.
Toreducetheriskofcrushandlacerationinjury,
keepngers,handsandallpartsofyourbodyaway
fromtheexpanderhead,hydraulicslideand
compressionjawsduringoperation.Removethe
batterybeforeattemptingtochangeoradjustthe
expanderheadorcompressionjaws.
EVERLOC
®
isaregisteredtrademarkofREHAU.DEWALT
®
andthe
DEWALTlogoaretrademarksofStanleyBlack&Decker,Inc.,oran
afliatethereofandareusedunderlicense.MAKITA
®
isatrademark
ofMakitaCorporation,oranafliatethereof.
1. SCOPE
3
2.1 Application
TheREHAUPEXaplumbingsystemincludesRAUPEXUVshieldPEXa
pipe,PEXacompressionsleevesandEVERLOC+polymerand
lead-freebrassttings.Thissystemisdesignedforpotable
applications.
TheEVERLOC+compression-sleevettingsystemisacold-expan-
sionPEXattingsystemthatisavailableinpolymerandlead-free(LF)
brassandisassembledwithaspeciallydesignedPEXacompression
sleeve.ThettingisdesignedspecicallyforusewithRAUPEXpipe
andcanonlybeassembledwiththeEVERLOC+compression-sleeve
tools.
Fig. 2.1: RAUPEX UV shield crosslinked polyethylene (PEXa) pipe
Fig. 2.2: EVERLOC+ compression-sleeve fittings and sleeves
2. SYSTEM OVERVIEW
Fig. 2.3: EVERLOC+ compression-sleeve tools
2.2 Standards and Certications
ThegoverningmodelcodeswithintheUnitedStatesandCanada
denetherequiredstandardsforPEXpipingsystems.
IntheUS,themodelcodesthataretypicallyadoptedbylocal
jurisdictionsare:theInternationalCodes(Mechanical,Plumbingand
Residential)governedbytheInternationalCodeCouncil(ICC)orthe
UniformCodes(MechanicalandPlumbing)andtheNationalStandard
PlumbingCode,governedbytheInternationalAssociationofPlumbing
andMechanicalOfcials(IAPMO).
InCanada,themodelcodethatistypicallyadoptedbylocaljurisdic-
tionsistheNationalPlumbingCodeofCanada(NPCC)whichis
governedbytheNationalResearchCouncilofCanada(NRCC).
Withinthesemodelcodes,thestandardrequirementsforPEXpipe
andttingsareASTMF877orCSAB137.5.Thesestandardsdene
therequirementsandtestmethodsforPEXpipingsystems.
TheREHAUPEXaplumbingsystemisthird-partycertiedbyNSF
International(www.nsf.org)tothefollowingstandards:
-ASTMF876StandardSpecicationforCrosslinkedPolyethylene
(PEX)Tubing
-ASTMF877StandardSpecicationforCrosslinkedPolyethylene
(PEX)Hot-andCold-WaterDistributionSystems
-CSAB137.5CrosslinkedPolyethylene(PEX)TubingSystemsfor
Pressure Applications
-NSF/ANSI14PlasticPipingSystemComponentsandRelated
Materials
-NSF/ANSI61DrinkingWaterSystemComponentsandRelated
Materials
-NSF/ANSI372DrinkingWaterSystemComponents–LeadContent
(complieswiththelead-freerequirementsoftheU.S.SafeDrinking
Water Act)
4
2.3 Specication
REHAUprovidesarecommendedspecicationfordomesticwater
pipingandttings.Thisrecommendedspecicationisprovidedasa
guidefordevelopmentofthenalspecicationbyaarchitect,
engineer,orbuilder.Thearchitect/engineer/buildershallberespon-
sibletoconvertthisrecommendedspecicationintoanalspecica-
tionthatmeetsthefunctionalneedsoftheclient,aswellastocomply
withallapplicablebuilding,plumbing,andmechanicalcodes.
Specicationsareavailableatwww.na.rehau.com/resourcecenter.
2.4 Warranty
RAUPEXUVshieldpipeandEVERLOC+compression-sleevettings
andsleevesarebackedbya25-yearlimitedwarranty.EVERLOC+
compression-sleevetoolsarebackedbya2-yearlimitedwarranty.
REHAUoffersthiswarrantywhentheinstallationiscarriedoutin
accordancewiththerequirementsoutlinedintheREHAUPEXa
Warranty 855.018
,whichisavailableasaseparatedocumentat
www.na.rehau.com/warranties.Pleasereadwarrantypriorto
installation.
2.5 Design Services
REHAUDesignServicescanprovidecustomerswithadetailed
submittalpackagetosupporttheinstallationoftheREHAUPEXa
plumbingsystem.
REHAUPlumbingDesignServicesinclude:
-BIMlibraryofplumbingsystemcomponents
-Productsubmittals
-Projectbillofmaterials
-Supportofpipelayoutbasedontheprojectengineer’sapproved
plumbingpipingdesign
2.5.1 Building Information Modeling Library
TheREHAUBIMLibraryoffersadirectoryofdrawingsthatareeasyto
downloadintoanactivedesign.BIMlesofferefcienciestoproject
ownersthrougheaseofcollaboration.TheREHAUBIMlibraryoffers
modelsofcoreproductsincludingpipe,ttings,manifoldsand
installation accessories.
2.5.2 LoopCAD
®
Software
REHAUPlumbingCADcreatesprofessionalpipelayoutdrawingsand
billofmaterialsfortheREHAUPEXaplumbingsystem.
5
3. RAUPEX PEXa PIPE
3.1 Pipe Properties
Crosslinkedpolyethyleneispolyethylene(PE)whichhasundergonea
changeinmolecularstructurewherebythepolymerchainsare
chemicallylinked,crosslinked(X),witheachothertoformathree-
dimensionalnetwork.Theresultisaexiblethermosetpolymerwith
improvedmechanical,thermalandchemicalproperties.
TherearethreemethodsofmanufacturingPEX:
-Theperoxidemethod(PEXa),ASTMrequiresaminimumof70%
crosslinkedPEmolecules
-Thesilanemethod(PEXb),ASTMrequiresaminimumof65%
crosslinkedPEmolecules
-Theradiationmethod(PEXc),ASTMrequiresaminimumof65%
crosslinkedPEmolecules
RAUPEXpipeismanufacturedusingtheperoxidemethod(PEXa),
whichyieldsthehighest,mostconsistentlevelofcrosslinking.PEXa
technologyenhancesexibilityandthermalmemory,providingeaseof
handlingandkinkrepaircomparedtoPEXbandPEXc.
PEXahasdistinctadvantagesovermetalandotherpolymerpipes:
-Resistspittingandstresscorrosion
-Resistsscalinganddepositbuild-upwhenusedwithbothhardand
softenedwater
-Minimizesnoisethatistransmittedthroughpipes
-Resistsnotchingandabrasiondamage
RAUPEXismanufacturedbyREHAUinafacilitywhosequality
managementsystemisISO9001certied.Inaddition,RAUPEX
productionisindependentlymonitoredannuallyNSFInternational,
CSAInternationalandUnderwritersLaboratoriesInc.(UL).
Table 3.1: RAUPEX Properties
Specication English SI Standard
Minimum
Density
58lb/ft
3
926kg/m
3
ASTMF876
Minimum
Degreeof
Crosslinkling
70% 70% ASTMF876
MaxThermal
Conductivity
2.84Btuin/(ft
2
˚F•hr) 0.41W/(m˚K) DIN16892
Coefcientof
Linear
Expansion
9.33x10-4in/ft˚F
@68˚F
1.33x10-3in/ft˚F
@212˚F
0.14mm/(m˚C)
@20˚C
0.2mm/(m˚C)
@100˚C
Mean @
20-70˚CperDIN
16892
Modulusof
Elasticity
87,000-130,500psi
@68˚F
43,500-58,000psi
@176˚F
600-900N/mm
2
@20˚C
300-400N/mm
2
@80˚C
Minimum@
20˚CperDIN
16892
Specication English SI Standard
Tensile
Strength
4194-4355psi
@68˚F
2610-2900psi
@176˚F
perASTMD638
26-30N/mm
2
@20˚C
18-20N/mm
2
@80˚C
perASTMD638
--
IZODImpact
Resistance
No Break No Break --
Roughness
e=0.00028in. e=0.007mm --
Temperature
WorkingRange
-40to200˚F -40to93˚C --
Maximum
Short-term
Exposure
150psig@210˚F
(48hr)
1035kPa@99˚C
(48hr)
ASTMF876
UVResistance SeeTB218 ASTM2657
3.2 Pipe Dimensions and Weights
RAUPEXpipeisavailableinnominalsizesrangingfrom3/8to2in.
RAUPEXisinaccordancetothedimensionalstandardsdenedin
ASTMF876.RAUPEXiscoppertubesize(CTS)outsidediameter
(OD),whichmeansthattheactualODofthepipeis1/8in(3.18mm)
largerthanthenominalsize.
Wallthicknessisdenedbythestandarddimensionalratio(SDR).
RAUPEXUVshieldpipeisSDR9,whichequatestotheoutside
diameterbeingapproximatelyninetimesthewallthickness.
Table 3.2: RAUPEX Dimensions and Weights
Pipe Size Average OD
in (mm)
Min Wall Thickness
in (mm)
Weight
lb/ft (kg/m)
3/8in 0.500(12.70) 0.070(1.78) 0.04(0.07)
1/2in 0.625(15.88) 0.070(1.78) 0.06(0.08)
5/8in 0.750(19.50) 0.083(2.12) 0.08(0.11)
3/4in 0.875(22.22) 0.097(2.47) 0.10(0.15)
1 in 1.125(28.58) 0.125(3.18) 0.17(0.26)
11/4in 1.375(34.92) 0.153(3.88) 0.25(0.37)
11/2in 1.625(41.28) 0.181(4.59) 0.35(0.52)
2 in 2.125(53.98) 0.236(6.00) 0.60(0.90)
6
3.3 Pipe Markings
RAUPEXpipemarkingsarerepeatedevery3ft(0.9m),listall
certicationsandapprovals,andincludeanincrementalfootage
markingtoassistwithinstallation.
3.3.1 PEX Designation Code
RAUPEXpipeisfurtheridentiedwithaPEXMaterialDesignation
codeinaccordancetoASTMF876.ThePEXDesignationCodeisthe
abbreviationforthematerial-PEX-followedbyfournumerals.
The PEX Designation Code for RAUPEX UV shield pipe is
PEX 3306
Therstnumeral(3)referstothechlorineresistanceinoneoffour
categories,whentestedinaccordancewithASTMTestMethodF2023
andevaluatedinaccordancewithASTMF876.Thismeasurement
indicatestheallowablehoursof140°Fwaterrecirculationin1day.
0 = none
1 = 4 hours
e.g., 25% of lifetime
3 = 12 hours
e.g., 50% of lifetime
5 = 24 hours
e.g., 100% of lifetime
Thesecondnumeral(3)referstoUVresistanceinoneoffour
categories,whentestedinaccordancewithASTMTestMethodF2657
andevaluatedinaccordancewithASTMF876.Themeasurement
indicatestheallowabletimepipecanbeexposedtoUVwithoutbeing
compromised.
0 = none 1 = 1 month 2 = 3 months 3 = 6 months
Thethirdandfourthnumerals(06)refertotheHydrostaticDesign
Stressforwaterat73°Finhundredsofpsi.Thestandardpressure
ratingat73°Fisderivedfromthismeasurement.
06 = 630 psi
3.4 Pressure and Temperature Ratings
ThemaximumtemperatureandpressureratingsoftheRAUPEX
plumbingsystemareinaccordancetoASTMF876,CSAB137.5and
PPITR-3.Thedesignershalldeterminetheactualconditionsand
applytheappropriateandadditionaldesignfactorsasrequiredforany
particularproject.
AccordingtotheREHAUPEXa Limited Warranty,theRAUPEXpipe
warrantyperiodisforoperatingconditionsatorbelow180°F(82.2°C)
inpermittedapplicationswhenthehandling,use,installationand
maintenancecontinuallycomplieswithallREHAUTechnical
Guidelines.
Table 3.3: RAUPEX UV Shield Pipe Pressure and Temperature Ratings
RAUPEX UV shield Pipe
Maximum Pressures and Temperatures Design Factors
160psi@73.4°F(1055kPa@23°C) 0.50(perASTMF876,CSAB137.5)
100psi@180°F(690kPa@82.2°C) 0.50(perASTMF876,CSAB137.5)
80psi@200°F(550kPa@93.3°C) 0.50(perASTMF876,CSAB137.5)
REHAUdenesElevated Temperature Applicationsasthosewith
operatingconditionsgreaterthan180°F(82.2°C).WhenRAUPEX
pipesareplannedtobeoperatedinconditionsgreaterthan180˚F
(82.2°C),thedesignermustsufcientlyconsiderthethermaland
oxidativestabilityperformanceofthepipingmaterialtoensurethe
PEXapipedesignwillmeetprojectserviceliferequirements.
For Elevated Temperature Applications,REHAUadvisesagainsttheuse
ofastressreductiondesignfactorthatlowerstheoperatingpressure
asitmaynotsufcientlyaccountforthermaloroxidativedegradation.
REHAUappliesaservicelifemethodologyforRAUPEXpipesdrawn
fromASTMF876,CSAB137.5,ISO9080andMiner'sruleaccording
toDIN13760todeterminethewarrantyperiod.RAUPEXpipesshould
alwaysbeoperatedatorbelowtheREHAUpublishedtemperatureand
pressureratings.
Whentheoperatingconditionsarelessthanorequalto180°F
(82.2°C),thenaccordingtotheREHAU PEXa Limited Warranty the
warrantyperiodforRAUPEXpipeis25years.WhenRAUPEXpipes
are operated in Elevated Temperature Applications,wherethe
operatingconditionsaregreaterthan180°F(82.2°C),contactREHAU
Engineeringtoverifyyouroperatingconditionscomplywiththe
requirementsintheREHAU PEXa Limited Warrantyforawarranty
periodof25years.
3.5 Excessive Temperature and Pressure Capability
Temperatureandpressure(T&P)reliefvalvesaresafetymechanisms
incasethesystemoverheats(mandatoryinhotwaterdistribution
systems).Thesevalvesactquicklytorelieveexcesstemperatureor
pressureifeitheroneoftheseconditionsisreached.Intheeventofa
waterheatingsystemfailureorT&Preliefvalvefailure,RAUPEXpipe
hasbeentestedtoaccommodateshort-termexposureconditionsof
210°F(99°C)at150psi(10bar)for48hours.
NOTICE
Failuretofollowpressureandtemperaturelimitsmaydamagethepipe
resultinginleaksandoperationalfailures,andwillnegateany
warrantyprovidedbyREHAUforRAUPEXpipes.Thedesignermust
incorporatepropercontrolsintothesystemtoensurethepressureand
temperaturecapabilityofthepipeisnotexceeded.
7
3.6 Corrosion Resistance
RAUPEXpipeisnon-reactiveanddisplaysexcellentcorrosion
resistance.Corrosionisaprocessthatrequireselectricallyconductive
materialsandoccursonmetals.PEXa,beingadielectric,doesnot
corrodelikemetalpipes.PEXaalsoresiststhebuildupofscalewhich
iscommonwithcopperpipe.
3.7 Chlorine Resistance
RAUPEXpipehasbeentestedinaccordancewithASTMF2023,
Standard Test Method for Evaluating the Oxidative Resistance of
Crosslinked Polyethylene (PEX) Tubing and Systems to Hot Chlorinated
Water asrequiredinASTMF876.RAUPEXpipeexceedstheminimum
extrapolatedtestlifetimeascertiedbyNSFandPPIforcoldwater
applications,intermittenthotwaterapplicationsandtimedhotwater
applications.
Basedonthistesting,whenusingRAUPEXUVshieldpipefor
plumbingapplicationswithoutcontinuoushotwaterrecirculation,the
followingwaterqualityconditionsmustbemet:
-ThepHofwateris7.0orhigher
-Theconcentrationoffreechlorineis4.0ppmorlower
-Watertemperatureis140°F(60°C)orlower
-Waterpressureis80psig(550kPa)orlower
-Oxidativereductionpotential(ORP)of825mVorlower
ThisrecommendationappliestoRAUPEXUVshieldplumbingpipesfor
coldwaterandintermittenthotwaterapplications(25%@140°F,
75%@73°F)andfortimedhotwaterrecirculationsystemsforupto
12hoursperday(50%@140°F,50%@73°F).TheASTMF876
standardincludesdesignationcodesfortheseapplicationswhichare
includedontheprintlineofRAUPEXpipes.
WhenusingRAUPEXUVshieldpipeforplumbingapplicationswith
continuoushotwaterrecirculation,thefollowingwaterquality
conditionsmustbemet:
-ThepHofthewateris7.9orhigher
-Theconcentrationoffreechlorineis2.4ppmorlower
-Watertemperatureis140°F(60°C)orlower
-Waterpressureis80psig(550kPa)orlower
-Oxidativereductionpotential(ORP)of750mVorlower
Iftheseconditionsarenotmet,itisnecessarytoincorporateatime
controlsothesystemoperatesatamaximum50%@140°Fand
50%@73°F.
Itshouldalsobenotedthatinrareandisolatedcases,othercharac-
teristicsofthemakeupofdrinkingwatercanimpactthelong-term
performanceofplumbingsystemcomponentsevenwhenthewater
qualitylevelsarewithinthepermissiblerangesetforthbythe
EPANational Primary Drinking Water RegulationsandtheGuidelines
for Canadian Drinking Water QualitybyHealthCanada.Thelicensed
installingcontractormusthavepracticalexperiencewithintheregion
ofintendeduse.Inaddition,consultationwiththelocalplumbing
authorityandlocalwaterauthorityregardingtheperformanceof
plumbingsystemcomponentsshouldoccurbeforetheselectionand
installationofsystemswithinthatspecicgeographicregion.
Therefore,thespecicapplicationshouldalsobetakenintoconsider-
ationwhendesigningandinstallingplumbingsystems.
3.8 Ultraviolet Resistance
Allpolymersaresusceptibletodamagefromexposuretothe
ultraviolet(UV)radiationinsunlight.PEXpipescanbedesignedto
protectagainstshort-termUVdamage,butaftersometime,UV
radiationwillreducethelifetimeofthepipe.Theextentofthe
reductiondependsonfactorssuchastemperature,pressureand
chlorinationlevelsinpotablewater.
REHAUhasperformedextensivetestingofRAUPEXpipesexposedto
naturalsunlight,leadingtothemaximumUVexposuretimesex-
pressedinaccumulateddays.Oncethepipesleavethemanufacturing
plant,anyexposuretoUV,includingtransportationandstoragebythe
wholesaler,ispartoftheaccumulatedexposuretime.
AlthoughASTMF876onlycategorizesupto6monthsofUVresis-
tance(MaterialDesignationCode=3306),REHAUhastestedand
certiedRAUPEXUVshieldpipeaccordingtoASTMF2657forthe
followingmaximumUVexposureperiod:
-RAUPEXred,whiteandblueUVshieldpipe:Maximumexposure
timeofoneyearaccumulated
RAUPEXpipesmustbekeptintheoriginalpackaginguntilthetimeof
installation.RAUPEXmustnotbestoredoutdoorsandisnotdesigned
forpermanentoutdoorexposure(withtheexceptionofnon-exposed
buriedapplications).ExcessiveUVexposurewillreducethelifetimeof
PEXapipe.
3.8.1 UV Emitted by Fluorescent Lamps
ASTMF2657wasestablishedtotesttotheworstcasescenariofor
UVexposurebytestingindirectsunlight.UVemittedbyuorescent
lampsisinsignicantwhencomparedtoUVpresentinsunlight.GE
Lightinghasstated“SolarUVisenormouslymorephotoactiveand
damagingthantheUVfromlinearuorescentlamps.SolarUV
includesUV-A,UV-BandUV-C.UV-AisnearUV,notveryenergetic
andisthebulkofUVemittedbyorescentlamps.”Therefore,when
8
REHAUPEXapipesareinstalledinthepresenceofuorescentlamps
theUVemittedbythoselampsshouldhavenoeffectonthelifetimeof
thepipes.Forexample,thereisnoconcernofUVdamageonREHAU
PEXapipesinstalledinaboilerroomwhereuorescentlampsare
present.
NOTICE
FailuretofollowmaximumUVexposurelimitsmaydamagethepipe
resultinginleaksandoperationalfailures,andwillnegateany
warrantyprovidedbyREHAUforRAUPEXpipes.
3.9 Bend Radius
RAUPEXpipemaybebent,evenwhencold.REHAUsupportbends
canassisttocreatetightbendswithoutkinking.Thetypicalbend
radiususedbytheinstalleris8XtheOD.Theminimumbendradiusis
5XtheODforcoldbends.Foranevensmallerbendradius,thepipe
maybeheatedwithaheatgunandbenttonolessthan3XtheOD.If
atighterbendradiusisrequired,thenthedesignershouldconsider
usingasmallerdiameterpipe.
Table 3.4: RAUPEX Bend Radius
Bend Radius in (mm)
Pipe Size Typical 8X OD Min. Cold 5X OD Min. Heated 3X OD
3/8in 4.0(102) 2.500(64) 1.500(38)
1/2in 5.0(127) 3.125(79) 1.875(48)
5/8in 6.0(152) 3.750(95) 2.250(57)
3/4in 7.0(178) 4.375(111) 2.625(67)
1 in 9.0(229) 5.625(143) 3.375(86)
11/4in 11.0(279) 6.875(175) 4.125(105)
11/2in 13.0(330) -- --
2 in
17.0(432) -- --
3.10 Chemical Compatibility
WhileRAUPEXpipesareresistanttomanychemicalsthatareusedin
typicalplumbingapplications,therearesomechemicalsthatmay
damagethepipe.
Chemicalsthatmaybedamaginginclude(butarenotlimitedto):
-Adhesives
-Oilorpetroleum-basedproducts
-Paints
-Solvents
-Oxidizingagents
-Disinfectants
-PVCglues
-Solventsandcements
Manyfactors,suchasexposuretime,temperature,pressureandother
operatingparameters,caninuencetheperformanceofapipethatis
exposedtoachemical.Todeterminetheimpactofaparticular
chemical,short-andlong-termpressuretestingmayberequired.In
somecases,apipemayberesistanttoshort-termexposuretothe
chemical,butnotresistanttocontinuousexposure.Eachchemical
mustbeevaluatedindividually.Itistheresponsibilityoftheinstalling
contractortoverifychemicalcompatibilityofanychemicalswhen
comingintocontactwiththepolymermaterial.
3.11 Freeze Break Resistance
TheexibilityoftheRAUPEXpipeallowsittoexpandaswaterfreezes
inthepipeaslongasthepipehasroomtoexpand.Whenthewater
thaws,thepipereturnstoitsoriginalshape.Ifthepipeisnotallowed
toexpand(e.g.,itisencasedinconcrete),itmayburst.
NOTICE
Designersandinstallersmusttakeprecautionstoensurethatpipesdo
notfreeze.Frozenpipesmayburstresultinginleaksandoperational
failures.
3.12 Condensation
Condensationoccursonpipeswhenthesurfacetemperatureislower
thanthedewpointoftheenvironment.Thisistypicallyaproblemfor
metalliccoldwaterpiping.PEXpipehasalowerthermalconductivity
(0.41W/m°K)thancopper(401W/m°K)resultinginlessheatlossto
thesurfaceandgreaterresistancetocondensationorsweating.
Insulationshouldbeappliedtopipingtohelppreventcondensation.
3.13 Pressure Loss
ThepressurelossinthePEXasystemdependsontheowrate,water
temperaturesandthepropertiesoftheuid.UsetheREHAU
LoopCAD
®
Softwarewhichincludesabuilt-incalculatortodetermine
pipepressurelossesforthegivenconditions.RefertotheREHAU
PEXa Piping Systems Pressure Loss Tablesfortheapplicablepressure
losstablepresentedattypicalowratesandwatertemperatures.The
pressurelossinPEXacarrierpipeisbasedontheapplicationofthe
D’Arcy-WeisbachequationanduidpropertiesfromASHRAE
Fundamentals.
9
4. EVERLOC+ COMPRESSION-SLEEVE FITTINGS
4.1 Fitting Scope
TheEVERLOC+compression-sleevesystemisacold-expansionPEXa
ttingsystemthatisavailableinpolymerandlead-free(LF)brassand
isassembledwithaspeciallydesignedPEXacompressionsleeve.The
ttingisdesignedspecicallyforusewithRAUPEXpipeandmust
onlybeassembledwiththeEVERLOC+compression-sleevetools.
EVERLOC+ttingsareavailablein3/8,1/2,5/8,3/4,1,11/4,11/2
and2in.sizesandareintendedforusewithRAUPEXSDR9copper
tubesize(CTS)pipemanufacturedinaccordancewithASTMF876
ForadetaileddescriptionoftheREHAUsystemcomponents,referto
theREHAUSustainable Building Technology Product Catalog
(855.312).
4.1.1 Fitting Features
EVERLOC+polymerandlead-free(LF)brassttingshavethe
followingfeatures:
1. Foursealingedges
2. Pipe stop
3. Fittingcollar
4. Tooljawbody
Fig. 4.1: EVERLOC+ fitting features
4.1.2 Fitting and Sleeve Markings
Allpolymerttingsincludethefollowingmarksforidentication
OR
Fig. 4.2: Fitting size marking (e.g., 3/4”)
Fig. 4.3: Batch code (e.g., production date)
AllLFbrassttingsaremarked"REHAU"
Allsleevesincludethefollowing
marksforidentication
-Sleevesize(e.g.,1/2")
-Batchcodeforproductiondate
Fig. 4.4: Sleeve markings
1
2
4
3
10
4.1.3 Polymer Fittings
EVERLOC+polymerttingsareavailableincouplings,tees,elbows,
multi-portteesandplugs.Allpolymerttingsareproducedfroma
polyphenylsulfone(PPSU)materialthatmeetstherequirementsof
NSF61forhealtheffectsofdrinkingwatersystemcomponentsand
complieswiththelead-freerequirementsoftheU.S.SafeDrinking
WaterAct.SeealsoREHAUTechnical Bulletin TB265 EVERLOC+
Polymer Fitting Material - PPSU.
Fig. 4.5: EVERLOC+ polymer fittings
4.1.4 Lead Free (LF) Brass Fittings
EVERLOC+LFbrassttingsareavailableascouplings,tees,elbows,
plugsandtransitionttingstoNPTthreadandcoppersolder
connections.AllmetalttingsareproducedfromECOBRASS
®
(UNS
69300orCW724R)thatmeetstherequirementsofNSF61for
healtheffectsofdrinkingwatersystemcomponentsandcomplies
withthelead-freerequirementsoftheU.S.SafeDrinkingWaterAct.
SeealsoREHAUTechnical Bulletin TB264 EVERLOC+ Lead-free Brass
Fitting Material.
Fig. 4.6: EVERLOC+ LF brass fittings
4.1.5 Metal Manifolds
Manifoldsare1in.TypeLcopperwithEVERLOC+LFbrassttings
brazedintotheheader.
Fig. 4.7: EVERLOC+ metal manifold
4.1.6 PEXa Compression Sleeves
EVERLOC+compressionsleevesareproducedusingaspecially
formulatedPEXamaterialandaredesignedspecicallyforusewith
EVERLOC+ttingsandRAUPEXpipe.EVERLOC+compression
sleeveshavethefollowingfeatures:
-Co-extrudedplatinum-coloredPEcoating
-Squarelycutendsthatcanbeslidoverthepipeineitherdirection
-Groovedandroughenedinsidesurfaceforlockingthesleeveinto
placeonceslidoverthepipeandtting
Fig. 4.8: EVERLOC+ compression sleeves
4.1.8 Certications
TheEVERLOC+compression-sleevesystemiscertiedtothe
followingstandards:
-ASTMF877,Standard Specification for Crosslinked Polyethylene
(PEX) Hot- and Cold-Water Distribution Systems
-NSF/ANSI14,Plastic Piping System Components and Related
Materials
-NSF/ANSI61,Drinking Water System Components – Health Eects
-NSF/ANSI372,Drinking Water System Components – Lead Content
-CSAB137.5,Crosslinked polyethylene (PEX) Tubing Systems for
Pressure Applications
11
4.2 Fitting Assembly
Beforestartingtheinstallationprocess,readtheEVERLOC+
Compression-sleeve System Product Instructions (855.724).
AssemblingtheEVERLOC+compression-sleevesystemrequiresthe
useoftheEVERLOC+compression-sleevetools.Onlymake
EVERLOC+compression-sleevejointswiththesetools.Referto
EVERLOC+ Power Tool Product Instruction Manual (855.725),
EVERLOC+ XL Power Tool Product Instruction Manual(855.728)and
EVERLOC+ XL Expander Tool Product Instruction Manual(855.729)for
acompleteunderstandingofoperation,careanduseofthe
EVERLOC+compression-sleevetools.
WARNING
ReadtheinstructionmanualfortheEVERLOC+
compression-sleevetoolsbeforeuseandfollowall
safetyprecautions-improperusecancauseserious
personalinjury.
WARNING
Toreducetheriskofpermanenteyeinjury,always
wearclose-ttingprotectiveeyewearwithside
protection.Eyewearmustbeimpact-ratedand
markedascomplyingwithANSIZ87.
NOTICE
UseonlyEVERLOC+compression-sleevetoolsforassemblyand
installation.Useofothertoolswillresultinanimproperlyassembled
joint,whichmayresultinleakingandpropertydamage.
ThebasicprocessofassemblinganEVERLOC+compression-sleeve
jointisasfollows:
-Makeaclean,squarecutoftheRAUPEXpipeusingaRAUPEX
cutter
-SlidetheEVERLOC+compressionsleeveovertheRAUPEXpipe
ensuringthesleeveisaminimumoftwotimesthelengthofthe
sleevefromtheendofthecutpipetoallowforexpansionofthepipe
only
-ExpandtheRAUPEXpipetwice,ensuringtheexpanderheadis
rotated1/2ofoneexpanderheadsegmentbetweenexpansions,
usingtheEVERLOC+compression-sleevetools
-InserttheEVERLOC+compression-sleevettingintotheexpanded
endoftheRAUPEXpipeuntilthepipeistouchingthepipestopon
thetting
-CompresstheEVERLOC+compressionsleeveovertheRAUPEX
pipeandEVERLOC+compression-sleevettingusingthe
EVERLOC+compression-sleevetools
Requiredassemblytoolsinclude:
-RAUPEXcutter
-EVERLOC+compression-sleevetools
-EVERLOC+expanderheadsandcompressionjaws
4.3 Installation Considerations
Someprecautionsandadditionalconsiderationsthatshouldbetaken
wheninstallingthesystem.
4.3.1 EVERLOC+ Fitting Removal
-EVERLOC+LFbrassttingsCANbereused,aslongtheribarea
wasnotdamagedduringremoval.
-EVERLOC+polymerttingsCANNOTbereusedandshouldbe
discardedimmediately.
-EVERLOC+compressionsleevesCANNOTbereusedandshouldbe
discardedimmediately.
Fig. 4.9: DO NOT cut the EVERLOC+ compression sleeve from finished joint
Fig. 4.10: DO NOT cut RAUPEX pipe from fitting
4.3.1.1 Fitting Removal of Completed Joint (LF brass ONLY)
IfitisrequiredtoremovetheLFbrassttingordisassembletheLF
brasscompression-sleevejoint,usethefollowingprocedure:
Ifthettinghasbeeninsertedintothepipeandthesleevehasbeen
compressed,safelyholdthettingwhileitisheated.Becarefulnotto
damagethettingwiththetool.
1. Heatthesleevedirectlyusingaheatgun.
2. Rotatethejointseveraltimeswhileheating.
3. Removeheatanduseplierstopullthesleeveoffthetting,then
immediatelypullthettingoutofthepipe.
CAUTION
Donotuseopenamestodisassemblethejoint.Openamescan
causeinjuryorpropertydamage.
12
Fig. 4.11: Heating EVERLOC+ compression sleeve with heat gun
Fig. 4.12: Removing pipe from LF brass fitting
Forre-assemblyofajoint,thefollowingshouldbeconsidered:
-Theendofthepipewherethepreviousttinghadbeeninstalled
mustbecompletelycutoffpriortomakinganewjoint.Cuttingoffa
minimumof3in(approximately75mm)isrecommended.
Fig. 4.13: Cut o 3 in. of pipe from end prior to making new joint
4.3.1.2 Fitting Removal of Partially Completed Joint (LF Brass
ONLY)
Ifthettinghasbeeninsertedintothepipe,butthesleevehasnot
beencompressed,attempttoremoveitwithoutdamagingthetting.If
ttingcannotbeeasilyremoved,heat1to11/2in(25to38mm)of
thepipethatcoversthettingandpullthettingoutofthepipe.
4.3.2 Protecting EVERLOC+ Joints
REHAUpermitsEVERLOC+compression-sleevejoints(polymerand
LFbrass)tobeburiedorconcealed.REHAUrecommendsthreaded
connectionsneverbeburiedorconcealedastheymustbeaccessible
forperiodicinspection,perprevailinglocalcodes.
TherequirementtowrapanEVERLOC+jointcandependonmany
factorsincludinglocationandthepresenceofothermaterialsthat
contactorcancomeincontactwiththejoint.
WhenwrappinganEVERLOC+joint,thefollowingisrequired:
-Wrapthejoint,ensuringaminimumof50%overlapofthetape
-Avoidwrinklesorkinksinthetapeandensurethejointiscompletely
covered,extendingontothepipeasnecessary
-Indicatethelocationofeachjointasrequiredonthe“as-built”
drawings
Fig. 4.14: REHAU Protective Tape, Red Fig. 4.15: Linerless Rubber Tape, Black
Note:UseonlyREHAUrecommendedprotectivetapesreferencedin
REHAUTechnical Bulletin TB266 Protecting EVERLOC+ Joints.Donot
useothertypesoftapes(e.g.,ducttape,standardelectricaltape)to
wrapthejoint,aschemicalsintheadhesivemaynotbecompatible
withthePPSUttingmaterialorthePEXapipe.
Note:Neveruseheatshrinktubing(e.g.,RAUCROSS)towrapthe
joint,astheextremelyhightemperaturesproducedfromaheatgun
willsoftenthepipeandmaycauseittopullawayfromthetting.
Fig. 4.16: DO NOT use heat shrink tubing for EVERLOC+ joints
4.3.2.1 Concealed in Inaccessible Locations
WhenEVERLOC+jointsareconcealedbutarestillinopenairspace
(e.g.,behinddrywall),itisnotnecessarytowrapthejoint.However,
theinstallershouldensurethettingdoesnotcomeincontactwith
chemicals(e.g.,PVCglues,solventsandcements)thatcoulddamage
thettingmaterial.
4.3.2.2 Buried in a Concrete Slab or sub-base underneath slab
WhenburyinganEVERLOC+polymerjointdirectlyinaconcreteslab,
orinthesub-baseunderneaththeslab,itisnotnecessarytowrapthe
joint.However,therearesomeadditivesinconcreteorchemicalsused
intheinstallationthatcouldpotentiallydamagethettingmaterial,
andinthiscase,wrappingisrecommended.EVERLOC+LFbrass
jointsburieddirectlyinaconcreteslaborinthesub-baseunderneath
theslabmustbewrapped.
13
4.3.2.3 Buried in Soil:
WhenburyingEVERLOC+jointsinsoil,outsideofastructure,thejoint
mustbewrapped.
4.3.2.4 With Foaming Agents:
Foamingagentsandsolventsinclosed-cellfoaminsulationkitscan
damagethePPSUttingmaterial.Therefore,itisnecessarytowrap
polymerttingsinaprotectivetapetoprotectfrompolyurethane
foams.
4.3.3 Pressure Testing
Thecompression-sleevejointisreadyforimmediatepressuretestand
useaftercompletionoftheassemblyprocess.Thereisnowaittime
forthesystemtobeputintoservice.SeeSection6.17.2forREHAU
pressure test procedures.
4.3.4 Pressure and Temperature Ratings
ThemaximumtemperatureandpressureratingsoftheREHAUPEXa
plumbingsystemareinaccordancewithASTMF877andCSAB137.5
forSDR9PEX,asdenedinSection3.4.
4.3.5 Ultraviolet Resistance
Thettingsandsleevesmustneverbestoredindirectsunlightor
storedoutsideoftheoriginalcardboardpackaging.Inaddition,the
systemisnotintendedforpermanentoutdoorapplicationsorinareas
withcontinuousexposuretoUV.
4.3.6 Freeze Break Resistance
TheexibilityoftheRAUPEXpipeallowsittoexpandaswaterfreezes
inthepipeaslongasthepipehasroomtoexpand.However,this
exibilitydoesnotensuretheintegrityofthejoint.Therefore,installers
musttakeprecautionstoensurethatpipesandttingsdonotfreeze.
Freezingmayresultinleaksandoperationalfailures.
4.3.7 Chlorine Resistance
EVERLOC+compression-sleevejointshaveachlorineresistance
ratingbasedontheratingsofRAUPEXpipe,asdenedinSection3.7.
4.3.8 Stress Corrosion Resistance
EVERLOC+LFbrassttingshavebeentestedinaccordancewith
NSF/ANSI14andcomplywiththerequirementforstresscorrosion
resistance.However,ttingsshouldnotbeexposedtoharmful
chemicalsoraggressivewaterconditionsthatcouldresultinopera-
tionalfailures.
4.3.9 Chemical Compatibility
TherearecertainchemicalsthatcandamagetheEVERLOC+
compression-sleevesystem.Thisappliestoexternalexposureof
chemicalsandtothetransportofsuchchemicalsbythepiping
system.
Chemicalsthatmaydamagethecompression-sleevesysteminclude
(butarenotlimitedto):
-AdhesivesandtapesotherthanthoserecommendedbyREHAU
-Oil/petroleum-basedproducts
-Paints,solvents
-Oxidizingagents(e.g.,bleach)
-Disinfectants(e.g.,separatedosingunitintegratedintobuilding
distributionsystem)
-PVCglues,solventsandcements
Fig. 4.17: DO NOT use harmful chemicals near EVERLOC+ fittings
Ensurethattheemployedsealants,cleaningagents,buildingfoams,
insulation,protectivetape,adhesivetapeorthreadsealantsdonot
containanycomponentswhichcausestresscrackingorcorrosion,
suchasammonia,ammonia-bearing,aromaticandoxygenated
solvents(e.g.,ketoneandether),chlorinatedhydrocarbonsorchloride
ionswhichcanleach.
Protectsystemsagainstcontacttochemicalsanddamage.Onlyuse
leakdetectionagents(e.g.,foamingagents)approvedbythe
respectivemanufacturerforPPSUmaterials.Onlyusesealants,
threadsealants,cleaningagents,buildingfoams,insulation,protective
tape,adhesivetapeanduxapprovedbytherespectivemanufacturer
forthePPSUmaterials.Checkthecompatibilityofmaterialsforthe
correspondingareaofapplicationwiththemanufacturer.
Contactwitharomaticandoxygenatedsolvents(e.g.,ketoneand
ether)aswellashalogenatedhydrocarbons(e.g.,chlorinated
hydrocarbons)isnotpermitted.Contactwithwater-basedacrylic
paintsandadhesive/protectiveprimersisnotpermitted.
14
4.3.10 Copper Soldering
Propersolderingtechniquesmustbefollowedwhensolderingall
compression-sleevettingsaccordingtotheCopper Development
Association (CDA) Handbook:
-Thesurfaceofthettingsolderingareamustbeproperlycleanedfor
agoodsolderconnection.Applyinguxisnotconsideredsufcient
cleaningforthesolderingarea.Usingapropersandingorbrush
techniqueisnecessarytoremovethesurfaceoxides.Inorderto
preventfurtherformationofoxides,theuxshouldbeapplied
immediatelyafterthecleaningprocess.Aproperuxthatis
compatiblewiththebrassalloymustbeused.
-Caremustbetakentonotoverheatthesolderingsurfaceasthiscan
leadtotheformationofoxidespreventinggoodadhesionofthe
soldermaterial.Itisimperativethatthettingisheatedevenly
aroundtheentiresurfacesoastonotoverheatoneparticulararea.
-Allcompletedsolderjointsmustbetestedforjointintegrityfollowing
theproceduresprescribedbyprevailinglocalcodes.
4.4 EVERLOC+ Compression-sleeve Tools
AssemblingtheEVERLOC+compression-sleevesystemrequiresthe
useoftheEVERLOC+compression-sleevetools.Onlymake
EVERLOC+compression-sleevejointswiththesetools.
Beforeuse,readandunderstandthefollowingsafetysymbolswhich
arefoundontheEVERLOC+compression-sleevetools.
SafetyAlertSymbol–Toreducetheriskofinjury,follow
thespeciedsafetyinstructions.
Readandfollowallsafetyprecautionsintheinstruction
manual.Improperusecanleadtoseriouspersonalinjury
orpropertydamage.
Toreducetheriskofseriouseyeinjury,alwayswear
proper eye protection.
Riskofelectricshock.Neveroperatethepowertoolin
damporwetconditions.Neverexposetorainor
submergeinwaterorotherliquids.Neveroperatethe
powertoolnearwiresorcablescarryingelectriccurrent.
Toreducetheriskofseverepersonalinjury,including
crushandlacerationinjury,keepngers,handsandall
partsofyourbodyawayfromtheexpanderhead,
hydraulicslideandcompressionjawsduringoperation.
NOTICE
UseonlyEVERLOC+compression-sleevetoolsforassemblyand
installation.Useofothertoolswillresultinanimproperlyassembled
joint,whichmayresultinleakingandpropertydamage.
4.4.1 EVERLOC+ Power Tool 3/8 to 1 in.
ForassemblyofEVERLOC+ttingsinsizes3/8through1in.Usethe
EVERLOC+powertool.RefertoEVERLOC+ Power Tool Product
Instruction Manual (855.725)foracompleteunderstandingof
operation,careanduseofthetool
Fig. 4.18: EVERLOC+ power tool
EVERLOC+powertoolstandardkit:
-EVERLOC+powertool
-Expansionadapter
-1/2,3/4and1in.EVERLOC+expanderheads(quickchange)
-1/2,3/4and1in.EVERLOC+compressionjaws
-DEWALT
®
12VLi-ionbattery(DCB127)(2batteriesperkit)
-DEWALT12V/20VLi-ioncharger120VAC(DCB107)
-DEWALT12V/20VLi-ionBatteryChargerInstructionManual
-Pipe cutter
-Lubricant
-Cleaningbrush
-Tool case
-Product Instruction Manual
Fig. 4.19: EVERLOC+ power tool standard kit
AvailableAccessories:
-3/8in.expanderhead(quickchange)
-3/8in.compressionjaws
-5/8in.expanderhead(quickchange)
-5/8in.compressionjaws
15
4.4.2 EVERLOC+ XL Power Tool 1 1/4 to 2 in.
AssemblingtheEVERLOC+compression-sleevesystemwith
diametersof11/4through2in.requirestheuseoftheEVERLOC+
XLpowertool.Refertothe EVERLOC+ XL Power Tool Product
Instruction Manual(855.728)foracompleteunderstandingof
operation,careanduseofthetool.
Fig. 4.20: EVERLOC+ XL power tool
EVERLOC+XLpowertoolstandardkit:
-EVERLOC+XLpowertool
-Expansionadapter
-11/4,11/2and2in.EVERLOC+expanderheads(quickchange)
-11/4,11/2and2in.EVERLOC+compressionjaws
-MAKITA
®
18VLi-ionbattery(BL1840B)(2batteriesperkit)
-MAKITA18VLi-ioncharger120VAC(DC18RC)
-MAKITA18VLi-ionBatteryChargerInstructionManual
-Pipe cutter
-Lubricant
-Cleaningbrush
-Toolcase(blacklatches)
-Product Instruction Manual
Fig. 4.21: EVERLOC+ XL power tool standard kit
AvailableAccessories:
-EVERLOC+XLexpandertoolstandardkit
-EVERLOC+XLexpanderbasetool
4.4.3 EVERLOC+ XL Expander Tool 1 1/4 to 2 in.
InadditiontotheEVERLOC+XLpowertool,theEVERLOC+XL
expandertoolcanbeusedfortheexpansionstepsofthe11/4to2in.
ttingassemblyprocess.UseofthistoolinadditiontotheXLpower
toolallowsforgreaterefciencyinsomeinstallationsituations.Refer
totheEVERLOC+ XL Expander Tool Product Instruction Manual
(855.729)foracompleteunderstandingofoperation,careanduseof
thetool.
Fig. 4.22: EVERLOC+ XL expander tool Fig. 4.23: EVERLOC+ XL expander tool
standard kit
EVERLOC+XLexpandertoolstandardkit:
-EVERLOC+XLexpandertool
-MAKITA18VLi-ionbattery
-MAKITA18VLi-ionBatteryChargerInstructionManual
-Lubricant
-Cleaningbrush
-Toolcase(graylatches)
-Product Instruction Manual
AvailableAccessories:
-EVERLOC+XLpowertoolstandardkit
-EVERLOC+expanderheads(quickchange):
11/4in.,Art.105078-001;11/2in.,Art.105079-001;and
2in.,Art.105080-001
-Largeratchetcutter,Art.131558-001
16
5. DESIGN CONSIDERATIONS
5.1 Pipe Sizing
Thedesignandlayoutofthebuildinghot-andcold-waterdistribution
systemshallcomplywithacceptedplumbingengineeringpracticeand
asperprevailinglocalcodes.
TheREHAUPEXaplumbingsystemconsistsofRAUPEXUVshield
PEXapipeandtheEVERLOC+compression-sleevettingsystemand
canbedesignedandsizedperthefollowingmodelplumbingcodes:
-ICCInternationalPlumbingCode(IPC)
-ICCInternationalResidentialCode(IRC)
-IAMPONationalStandardPlumbingCode(NSPC)
-IAPMOUniformPlumbingCode(UPC)
-NRCCNationalPlumbingCodeofCanada(NPCC)
Inaddition,aproperlydesignedplumbingsystemshouldfollowthe
engineeringprinciplesaspertheAmericanSocietyofPlumbing
Engineers(ASPE)Plumbing Engineering Design Handbook Volume II
orequivalent.
Forsizingasysteminresidentialandlightcommercialbuildings,use
thewatersupplyxtureunit(WSFU)methodtodeterminethe
requiredload(GPM)andresultingpipesizeaspublishedinthemodel
plumbingcodes.Alternatively,orinlargerbuildings,theuniform
frictionheadlossmethodcanbeutilized.
5.1.1 Standard Dimension Ratio
RAUPEXpipeisinaccordancetothedimensionalstandardsinASTM
F876andCSAB137.5.RAUPEXiscoppertubesize(CTS)outside
diameter(OD)whichmeansthattheactualODofthepipeis1/8in.
(3.18mm)largerthanthenominalsize.
Wallthicknessisdenedbythestandarddimensionalratio(SDR).
RAUPEXUVshieldpipeisSDR9,whichequatestotheoutside
diameterbeingapproximatelyninetimesthewallthickness.Since
PEXpipehasathickerwallthancoppertube,theinsidediameter(ID)
isslightlysmaller.However,sincePEXpipeisnotsusceptibletothe
erosionandcorrosionissuesofcoppertube,plumbingsystemscan
bedesignedathighervelocitieswhichallowforcomparablesizingof
asystem.
5.1.2 Determining Friction Loss
ThepressurelossfortheREHAUPEXaplumbingsystemcanbe
calculatedusingtheREHAU PEXa Piping Systems Pressure Loss
Tables (855.861)availableonlineontheREHAUResourceCenteror
usingtheREHAULoopCADsoftwarepressurelosscalculatortool.
5.1.3 Velocity Considerations
Themaximumvelocityofwaterow(feet/second–fps)inthe
plumbingsystemshouldbeconsideredwhensizingaREHAUPEXa
plumbingsystem.Todeterminethepipesize,theWSFUloadcanbe
correlatedtoowrate(GPM)fromtablespublishedinthemodel
plumbingcodes.
Oncetheowrateisdetermined,thepipecanbesizedbasedonthe
allowablemaximumvelocitiesperprevailinglocalcodes.
Thedesignercanusethefollowingtablesasaguideline:
Table 5.1: Maximum Velocity of Water Flow
Cold-Water
Piping
- Typicalplumbingcodesstatemaximumvelocityof8ft/sec
- REHAUrecommendsamaximumdesignvelocityof10ft/sec
Hot-Water
Piping
- Typicalplumbingcodesstatemaximumvelocityof5ft/sec
- REHAUrecommendsamaximumdesignvelocityof8ft/sec
Hot-Water
Recirculation
Return Piping
- Maximumvelocityof2ft/sec
- Maximumoperatingtemperatureof140°F(60°C)
Table 5.2: GPM per Pipe Size
Pipe Size
GPM
@ 2 fps
GPM
@ 5 fps
GPM
@ 8 fps
GPM
@ 10 fps
3/8in 0.6 1.6 2.5 3.2
1/2in 1.1 2.9 4.6 5.8
3/4in 2.3 5.7 9.1 11.3
1 in. 3.8 9.4 15.0 18.8
11/4in 5.7 14.0 22.3 28.1
11/2in 8.0 19.7 31.3 39.1
2 in 13.7 33.4 53.8 6 7.1
17
5.2 Equivalent Length of Fittings
Itiscommonpracticefordesignerstoconvertthepressuredrop
acrossttingstoanaverageequivalentlengthofpipe.These
equivalentlengthsareaddedtothetotalpipelength.Designerscan
calculatetotalpressurelossusingthisadjustedpipingsystemlength.
Table 5.3: Equivalent Length of Fittings
Couplings
Fitting Description Equivalent Length (ft)
3/8x3/8in.EVERLOC+LFBrassCoupling 1.1
1/2x1/2in.EVERLOC+PolymerCoupling 0.4
5/8x5/8in.EVERLOC+LFBrassCoupling 1.0
3/4x1/2in.EVERLOC+PolymerCoupling 2.1
3/4x3/4in.EVERLOC+PolymerCoupling 0.8
1x3/4in.EVERLOC+PolymerCoupling 2.7
1x1in.EVERLOC+PolymerCoupling 1.1
11/4x3/4in.EVERLOC+LFBrassCoupling 3.5
11/4x1in.EVERLOC+PolymerCoupling 4.0
11/4x11/4in.EVERLOC+PolymerCoupling 2.0
11/2x1in.EVERLOC+PolymerCoupling 4.8
11/2x11/2in.EVERLOC+PolymerCoupling 2.0
2x1/2in.EVERLOC+LFBrassCoupling 3.5
2x3/4in.EVERLOC+LFBrassCoupling 3.8
2x1in.EVERLOC+LFBrassCoupling 5.2
2x11/4in.EVERLOC+LFBrassCoupling 5.3
2x11/2in.EVERLOC+LFBrassCoupling 6.1
2x2in.EVERLOC+PolymerCoupling 2.2
Elbows (PEX to PEX)
Fitting Description Equivalent Length (ft)
1/2x1/2in.EVERLOC+PolymerElbow 1.9
5/8x5/8in.EVERLOC+LFBrassElbow 5.4
3/4x3/4in.EVERLOC+PolymerElbow 7.0
1x1in.EVERLOC+PolymerElbow 10.7
11/4x11/4in.EVERLOC+PolymerElbow 14.2
11/2x11/2in.EVERLOC+PolymerElbow 16.0
11/2x11/2in.EVERLOC+LFBrass45°Elbow 3.4
2x2in.EVERLOC+PolymerElbow 24.2
Tees
Fitting Description
Equivalent
Length (ft)
RUN
Equivalent
Length (ft)
BRANCH
1/2x1/2x1/2in.EVERLOC+PolymerTee 0.8 4.4
1/2x1/2x3/4in.EVERLOC+PolymerTee - 4.1
3/4x1/2x1/2in.EVERLOC+PolymerTee 2.4 4.3
3/4x1/2x3/4in.EVERLOC+PolymerTee 2.4 7.6
3/4x3/4x1/2in.EVERLOC+PolymerTee 1.3 4.0
3/4x3/4x3/4in.EVERLOC+PolymerTee 1.2 7.6
3/4x3/4x1in.EVERLOC+PolymerTee - 6.8
1x1x1/2in.EVERLOC+PolymerTee 1.6 3.9
1x3/4x3/4in.EVERLOC+PolymerTee 2.8 6.5
1x3/4x1in.EVERLOC+PolymerTee 3.1 10.9
1x1x3/4in.EVERLOC+PolymerTee 1.2 6.7
1x1x1in.EVERLOC+PolymerTee 1.6 10.6
11/4x1x3/4in.EVERLOC+LFBrassTee 3.7 5.4
11/4x1x1in.EVERLOC+PolymerTee 3.8 9.7
11/4x1x11/4in.EVERLOC+LFBrassTee 4.3 9.6
11/4x11/4x1/2in.EVERLOC+LFBrassTee 0.8 5.0
11/4x11/4x3/4in.EVERLOC+LFBrassTee 1.3 5.5
11/4x11/4x1in.EVERLOC+PolymerTee 2.3 10.1
11/4x11/4x11/4in.EVERLOC+PolymerTee 2.2 14.4
11/2x1x3/4in.EVERLOC+LFBrassTee 6.8 6.8
11/2x1x1in.EVERLOC+LFBrassTee 5.5 7. 9
11/2x1x11/2in.EVERLOC+LFBrassTee 5.6 12.4
11/2x11/4x3/4in.EVERLOC+LFBrassTee 4.5 5.5
11/2x11/4x1in.EVERLOC+LFBrassTee 4.4 8.1
11/2x11/4x11/4in.EVERLOC+LFBrassTee 4.5 9.5
11/2x11/4x11/2in.EVERLOC+LFBrassTee 4.3 10.9
11/2x11/2x1/2in.EVERLOC+LFBrassTee 1.0 4.9
11/2x11/2x3/4in.EVERLOC+LFBrassTee 1.0 5.4
11/2x11/2x1in.EVERLOC+PolymerTee 2.2 9.1
11/2x11/2x11/4in.EVERLOC+LFBrassTee 1.7 9.6
11/2x11/2x11/2in.EVERLOC+PolymerTee 2.6 17.0
2x11/4x2in.EVERLOC+LFBrassTee 6.7 14.9
2x11/2x3/4in.EVERLOC+LFBrassTee 5.8 5.7
2x11/2x1in.EVERLOC+LFBrassTee 6.2 7.7
2x11/2x11/4in.EVERLOC+LFBrassTee 6.3 9.5
2x11/2x11/2in.EVERLOC+LFBrassTee 6.4 11.2
2x11/2x2in.EVERLOC+LFBrassTee 6.5 14.6
2x2x1/2in.EVERLOC+LFBrassTee 1.1 5.0
2x2x3/4in.EVERLOC+LFBrassTee 1.0 5.9
2x2x1in.EVERLOC+PolymerTee 3.2 9.0
2x2x11/4in.EVERLOC+LFBrassTee 1.9 9.7
2x2x11/2in.EVERLOC+LFBrassTee 1.9 10.9
2x2x2in.EVERLOC+PolymerTee 4.0 25.3
18
Elbows (PEX to transition)
Fitting Description
Equivalent
Length (ft)
1/2x1/2in.CMaleor3/8in.CFemaleEVERLOC+LFBrassElbow 7.4
1/2x1/2in.CFemaleEVERLOC+LFBrassElbow 7.2
3/4x3/4in.CFemaleEVERLOC+LFBrassElbow 7.1
3/4x3/4in.CMaleEVERLOC+LFBrassElbow 7.4
1/2x1/2in.MPTEVERLOC+LFBrassDropEarElbow 7.6
1/2x1/2in.FPTEVERLOC+LFBrassDropEarElbow 4.9
3/4x3/4in.MPTEVERLOC+LFBrassElbow 7.5
3/4x3/4in.MPTEVERLOC+LFBrassDropEarElbow 7.7
3/4x3/4in.FPTEVERLOC+LFBrassDropEarElbow 9.0
1x1in.FPTEVERLOC+LFBrassDropEarElbow 13.6
Adapters (PEX to copper)
Fitting Description
Equivalent
Length (ft)
1/2x1/2in.CFemaleEVERLOC+LFBrassAdapter 2.3
1/2x1/2in.CMaleor3/8in.CFemaleEVERLOC+LFBrassAdptr 2.4
1/2x3/4in.CFemaleEVERLOC+LFBrassAdapter 4.0
3/4x1/2in.CMaleEVERLOC+LFBrassAdapter 0.3
3/4x1/2in.CFemaleEVERLOC+LFBrassAdapter 0.5
3/4x1in.CFemaleEVERLOC+LFBrassAdapter 3.9
3/4x3/4in.CFemaleEVERLOC+LFBrassAdapter 2.7
3/4x3/4in.CMaleEVERLOC+LFBrassAdapter 2.6
1x1in.CFemaleEVERLOC+LFBrassAdapter 3.5
1x1in.CMaleEVERLOC+LFBrassAdapter 3.3
11/4x11/4in.CFemaleEVERLOC+LFBrassAdapter 4.1
11/4x11/4in.CMaleEVERLOC+LFBrassAdapter 4.3
11/2x11/2in.CFemaleEVERLOC+LFBrassAdapter 5.3
11/2x11/2in.CMaleEVERLOC+LFBrassAdapter 5.4
2x2in.CFemaleEVERLOC+LFBrassAdapter 7.0
2x2in.CMaleEVERLOC+LFBrassAdapter 6.9
Adapters (PEX to MPT/FPT)
Fitting Description
Equivalent
Length (ft)
3/8x1/2in.MPTEVERLOC+LFBrassAdapter 2.4
1/2x1/2in.FPTEVERLOC+LFBrassAdapter 2.8
1/2x1/2in.MPTEVERLOC+LFBrassAdapter 3.3
5/8x1/2in.MPTEVERLOC+LFBrassAdapter 2.9
5/8x3/4in.MPTor1/2in.CFemaleEVERLOC+LFBrassAdptr 3.6
3/4x3/4in.FPTEVERLOC+LFBrassAdapter 2.8
3/4x3/4in.MPTEVERLOC+LFBrassAdapter 3.4
3/4x1in.MPTEVERLOC+LFBrassAdapter 4.3
1x3/4in.FPTEVERLOC+LFBrassAdapter 0.1
1x1in.FPTEVERLOC+LFBrassAdapter 3.6
1x1in.MPTEVERLOC+LFBrassAdapter 3.8
11/4x11/4in.MPTEVERLOC+LFBrassAdapter 4.9
11/2x11/2in.MPTEVERLOC+LFBrassAdapter 5.9
2x2in.MPTEVERLOC+LFBrassAdapter 7.3
5.3 Piping Layouts
Mostpipinglayoutdesignsutilizesomeformofreducingteeinorder
tobranchfromamaintrunklinetosmallerpipediametersthatroute
toxturesandappliances.TheexibilityofRAUPEXpipeallowsyou
toeasilyroutearoundobstaclesandreducethenumberofttings
needed.Multi-portteesfunctionlikereducingtees,butreducethe
numberofconnectionpoints.Ingeneral,thebestsystemdesigns
utilizetheexibilityoftheRAUPEXpipeandminimizeconnections.
5.3.1 Tee and Branch
-Increasesinstallationspeedbytakingadvantageoftheexibilityof
PEXapipe
-Reducespressureatthefurthestxture
-Similartotraditionalrigidpipeinstallationlayouts
-Reduceshotwaterwaittime,comparedtoahome-runsystem
Parts list:
-Reducingtees
-Straighttees
-Straightorcoiledpipe
Fig. 5.1: Tee and branch piping layout
19
5.4 Thermal Expansion and Contraction
Whenthermalexpansionisanticipated,pipemovementshouldbe
controlledtoavoidchangesthatcoulddamagethepipingsystem.
Anchoringanduseofexpansionloopsmaybeusedtoaccomplish
this.Allowingforcontrolledexpansionandcontractioninmultiple
partsofapipingsystemisanacceptedmeansofpreventingadded
stressesinotherpartsofthesystem.
RAUPEXpipingsystemsexhibitahigherexpansionandcontraction
ratewhensubjectedtochangesintemperatureascomparedto
metallicpipingsystems.Becauseofitslowermodulusofelasticity,
RAUPEXpipeislessrigidthanmetallicpipinganddevelopslessforce
thanmetallicpipewhenexposedtotemperaturechanges.
5.4.1 Calculating Thermal Expansion of RAUPEX Pipe
Whenapipeisanchoredatoneendbutcanotherwisefreelymovein
theaxialdirection,anincreaseintemperaturecausesthepipeto
increaseinoveralllength.Adecreaseintemperaturecausesa
decreaseinlength.
Thefollowingequationpredictsthenetexpansion/contractioninthe
lengthofafullyunrestrainedpipethatoccursinconsequenceofa
givenchangeintemperature:
(1)
where,
ΔL=changeinpipelength,in.
α=coefcientoflinearexpansion/contraction,in/ft°F
L=initialpipelength,in.
ΔT=changeinpipetemperature,°F
Note:SeeTable3.1forcoefcientoflinearexpansion
5.4.2 Calculating L-bend and U-bend for RAUPEX Pipe
RAUPEXpipewillexpandandcontractwhenheatedorcooleddueto
achangeinwatertemperatureorambienttemperature.Thermal
expansionofRAUPEXpipemustbeconsideredinthedesignand
installationofthepipingsystem.Fixedanchorpoints,guidesand
expansionloopsshouldbeutilizedtoaccountfortheexpansionand
contractionofthepipetopreventanydamagetothepipingsystem.
5.3.2 Multi-port Tee
-Minimizesnumberofconnections
-Combinesteeandbranchandhome-runconcepts
-Systemsarepressure-balancedateachmanifold
-Reduceshotwaterwaittime,comparedtoahome-runsystem
Parts list:
-Flow-throughmulti-porttees
-Closed-endmulti-porttees
-Straightorcoiledpipe
Fig. 5.2: Multi-port tee piping layout
5.3.3 Home-run
-Generallyforresidentialinstallations
-Eliminatesmostttings
-Balancespressuretoallxtures
-Increaseshotwaterwaittime,comparedtoteeandbranchand
remotemulti-portdesigns
-Usesmorepipe
-Mayrequiremoreholestobedrilledinjoistspaces
Parts list:
-Multi-porttees
-Straightorcoiledpipe
Fig. 5.3: Home-run piping layout
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Rehau PEXa Plumbing Installation guide

Rehau
Brand
Rehau
Model
PEXa Plumbing
Type
Installation guide
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