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4300Catalog GeneralTechnical 1. SelectingTubeMaterial:TableU7indicatesthatcarbon ReturnT Severityof Design Derating I o steel, C-1010, tubing would meet the media, operating Service Description Factor Factor ndex temperaturerange,andmaximumoperatingpressure(high) Moderatemechanicaland A(Normal) 4.00 1.00 hydraulicshocks. requirements. Severehydraulicshocks 2. SizingtheTube:FromTableU13,therecommendedflow B(Severe) 6.00 0.67 andmechanicalstrain. diametersforvariouslinesfor10GPMflowrateare:0.405 Hazardousapplicationwith forpressureline,0.639forreturnline,and1.012forsuction C(Hazardous) 8.00 0.50 severeserviceconditions. line. TableU10--SeverityofServiceDesignandDeratingFactors Now,usingTablesU15andU16,weneedtofindtubeswith insidediameters(I.D.)equaltoorlargerthantheaboveflow Thedesignfactorisgenerallyappliedtoultimatestrengthof diameters,andwallthicknessesappropriatefordesignpres- material(orburstpressureoftubing)toprovideameasureof suresof3500psiminimumforthepressurelineandabout safetyagainsttheunknownsinmaterialandoperatingcondi- 500psiforreturnandsuctionlines.Sincederatingfactors tions.Thederatingfactorslistedhereshouldbeapplieddirectly forSeverityofService(TableU10)andMax.Operating tothedesignpressurevaluesinTablesU15andU16toarriveat Temperature(TableU11)areboth1,designpressurevalues maximumrecommendedworkingpressures(i.e.,multiplyvalues inTablesU15andU16donotneedtobereduced. inTablesU15andU16bythesederatingfactors). MatchingtubeI.D.sanddesignpressuresinTablesU15 Besidesseverityofservice,highoperatingtemperaturealso andU16foraboveconditions,wefind: reducesallowableworkingpressureofthetubing.Temperature A) Forthepressureline,wewouldchoose5/8"O.D.x.083" deratingfactorsforvarioustubematerialsaregiveninTableU11. walltubing.The.095"and.109"walltubeswouldalso Whereapplicable,deratingfactorsforseverityofserviceand besatisfactoryif.083"wallisnotreadilyavailable. temperatureshouldbeappliedtothedesignpressurevaluesin TablesU15andU16toarriveatthemaximumrecommended B) Forthereturnline,either3/4"x.035"or3/4"x.049" workingpressure. wouldmeettherequirements.IfFerulok fittingsare beingused,wewillneedtogoto3/4"x.065"because Example: .065"isthesmallestwallthicknessrecommendedfor Combinedderatingfactorfor316SStubingforB(severe) 3/4" O.D. tubing used with Ferulok fittings inTable serviceand500�F.operationis.67x.9=.603 U14.Thisreducestheflowdiameterabout3%below therecommendedvalue,butisstillintheacceptable TubeSelectionExample: range.Thealternativeistogoto7/8"O.D.x.072"wall Maximum Steel tubing,whichiswaytoolarge. Stainless Operating C-1010 Steel Temperature and Aluminum Monel Steel (degreesF) C-4130 304 316 Copper 6061-T6 Type400 Steel AlloySteel 100 1.00 1.00 1.00 1.00 1.00 1.00 St.Steel Steel St.Steel Copper TubeMaterial 150 1.00 0.91 1.00 0.85 1.00 0.97 Copper St.Steel Copper Aluminum Steel 200 1.00 0.84 1.00 0.80 1.00 0.94 Size Aluminum Monel Monel Plastics St.Steel 250 1.00 0.79 1.00 0.80 0.94 0.91 SAE SAE SAEO-ring 300 1.00 0.75 1.00 0.78 0.80 0.88 O.D. O.D. Dash 37�Flare Flareless FaceSeal Metric 350 0.99 0.72 0.99 0.67 0.60 0.86 (in.) (mm) Number Triple-Lok Ferulok Seal-Lok1) Intru-Lok Flareless 400 0.98 0.69 0.97 0.50 0.43 0.85 1/8 4 -2 .010-.035 .010-.035 -- .012-.028 0.5-1 500 0.96 0.65 0.90 0.84 3/16 6 -3 .010-.035 .020-.049 -- .012-.035 1-2 600 0.61 0.85 0.84 1/4 8 -4 .020-.065 .028-.065 .020-.083 .020-.049 1-2.5 5/16 10 -5 .020-.065 .028-.065 .020-.095 .020-.065 1-3 700 0.59 0.82 0.84 3/8 12 -6 .020-.065 .035-.095 .020-.109 .028-.065 1.5-3.5 800 0.57 0.80 0.83 1/2 14 -8 .028-.083 .049-.120 .028-.148 .035-.083 1.5-4 900 0.54 0.78 5/8 15 -10 .035-.095 .058-.120 .035-.134 .035-.083 1.5-4 1000 0.52 0.77 3/4 16 -12 .035-.109 .065-.120 .035-.148 .035-.095 2-4 1100 0.47 0.62 7/8 18 -14 .035-.109 .072-.120 -- .049-.095 2-4 1200 0.32 0.37 1 20 -16 .035-.120 .083-.148 .035-.188 .049-.120 2.5-4 TableU11--TemperatureDeratingFactors*forTubes 11/4 22 -20 .049-.120 .095-.188 .049-.220 2.5-4 11/2 25 -24 .049-.120 .095-.220 .049-.250 2.5-4.5 *Thederatingfactorsarebasedonallowabledesignstress 2 28 -32 .058-.134 .095-.220 .065-.220 2.5-4.5 valuesatvarioustemperaturesperASMEB31.1codefor 30 2.5-5 pressurepiping(1986). 35 3-5 38 3-6 42 3.5-7 Toselecttubematerialandtubesizesforpressure,returnand suctionlinesforahydraulicpowerunitwiththefollowingoperat-1) Brazingtoattachsleevecanbeusedforallwallthicknesses.For ingparametersknown: flangingtoolavailability,seepageS26. TableU12--Recommended"Min./Max"TubeWallThicknessfor Typeoffluid:Petroleumbasehydraulicfluid CommonFittings Operatingtemperaturerange:-20�Fto+140�F. C) Forthesuctionline,wecanuseanyoneofthefol- Maximumoperatingpressure:3500psi lowingtubes:1-1/4"O.D.x.049"to.083"walltubefor Maximumflowratethrougheachline:10GPM Triple-LokorSeal-Lokfittingsand1-1/4"O.D.x.095" walltubeforFerulokfittings. Severityofservice:A(normal) One final consideration in choosing the right wall thickness for tubing is bending. If bending without theuseofamandrelisdesired,thenwallthickness oflessthan7%oftubeO.D.shouldnotbeused. Dimensionsandpressuresforreferenceonly,subjecttochange. U16 ParkerHannifinCorporation TubeFittingsDivision Columbus,Ohio http://www.parker.com/tfd
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