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4300Catalog                                                                                    Assembly/Installation
                                                                                                  Triple-LokAssembly
Triple-Lok/Triple-Lok2
Assembly
Forleak-freeperformance,theTriple-Lok fittingrequiresthe
followingsteps:
1. Cutting,deburringandcleaningofthetube
2. Flaring
3. Flareinspection
4. Installation
                                                                 Fig.T26FlaringwithHydra-    Fig.T27Nutsandsleeves
                                                                 Tool                              assembledbeforeflaring
     Caution:Useonlyseamlessorweldedanddrawntube
     thatisfullyannealedforflaringandbending.(Seepage
     U14fortube/fittingmaterialcompatibilityinformation.)
                                                                 FlareInspection
Step1hasbeencoveredinaprevioussection(seepageT12).
                                                                 Inspectflarefordimensionsandsurfacequality.TableT18shows
                                                                 theproperflaredimensions.Thesleevecanalsobeusedfora
Fortherecommendedminimumandmaximumtubewallthick-
                                                                 quickcheckoftheflaredimensionsasshowninFig.T28.
nessforTriple-Lok fittings,pleaserefertoTableC3onpage
C8.
Flaring
                                                                    Inch    Metric   37°Flare
Several flaringmethods,rangingfromsimplehandflaringto      TubeO.D. TubeO.D. DiameterØA
hydraulic/electricpowerflaring,areavailable.Varioustoolsfor  (in.)     (mm)        (in.)
flaringareshownonpagesS27throughS32.Power flaring            1/4        6      .340/.360
isquickerandproducesmoreaccurateandconsistentflares
                                                                    5/16        8      .400/.430
comparedtohandflaring.Therefore,itisapreferredmethodof
                                                                     3/8       10      .460/.490
flaring.Handflaringshouldbelimitedtoplaceswherepower
                                                                     1/2       12      .630/.660
flaringtoolsarenotreadilyavailable.TheParflangemachines
shownonpagesS24-S25alsoflaretubewithanorbitalflaring        5/8     15&16   .760/.790
processandprovidethebestflareforstainlesssteeltube.          3/4     18&20   .920/.950
                                                                      1        25     1.170/1.200
Priortoflaring,determinethetubelengthallowanceusingTable
                                                                    11/4    30&32  1.480/1.510
T17.Thistubelengthallowanceshouldbeaddedtothecuttube
lengthtoallowforthe"loss"oftubecausedbyflaring.            11/2      38    1.700/1.730
                                                                  TableT18--37°FlareDimensions
   NominalTube
       O.D.
  Inch    Metric    A
   1/8      --      0.07
  3/16      --      0.08
   1/4      6      0.09
  5/16      8      0.08
   3/8      10     0.08
   1/2      12     0.12
   5/8  14,15,16  0.13
   3/4    18,20   0.15
   7/8      22     0.15
                                Fig.T25--Tubelengthallow-
    1       25     0.15
                                ance
  11/4   30,32   0.20
  11/2     38     0.18
    2       42     0.28
TableT17--Tube                                                Fig.T28ComparingflareO.D.withsleeveseatandO.D.
lengthallowance
                                                                 Underflaring(seeFig.T29)reducescontactareacausingex-
Flaretubeendusingoneoftheflaringtoolsandfollowingits
                                                                 cessivenosecollapseandleakage;or,inextremecases,tube
operatinginstructions.Fig.T26showsflaringwithHydra-Tool.
                                                                 pulloutunderpressure.
     Note:Besuretoinsertanutandasleeveinproperse-
                                                                 Overflaring(seeFig.T29)causestubenutthreadinterference,
     quenceandorientationbeforeflaringeitherendofabent
                                                                 eitherpreventingassemblyaltogether,orgivingafalsesense
     tube,orsecondendofastraighttube(seeFig.T27).
                                                                 ofjointtightnessresultinginleakage.
                                                              T20                               ParkerHannifinCorporation
                                                                                                TubeFittingsDivision
                                                                                                Columbus,Ohio
                                                                                                http://www.parker.com/tfd