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Catalog4300 EOandEO-2MetricBiteTypeFittings FittingInstructions: Features,Advantages& Thelifeofarotaryfittingdependsconsiderablyinastress-free Benefits lineconnection.Therefore,thedirectconnectionwithtubeistobe avoided.Forconnectiontohoses,theuseofswivelnutfittingsis �VisibleBite--Thecriticalfrontbiteoftheprogressivering recommendedwithshort,straightlines(approx.length5xhose isclearlyvisibletotubefitters&inspectors.Thepresenceof O.D.).Thus,shocksandvibrationscanbeabsorbed. therecommendedbitevirtuallyeliminatesanyriskofcata- strophicblow-off.Thisisaveryimportantsafetyfeature. Non-ReturnValves � SealingCapability --EOfittingshavedemonstrateda remarkableabilitytoremainleakfreeundervariousservice Characteristics:Sealingisachievedbyusinga90�conewitha conditionsrangingfromsealinghighvacuumandsmall packingwasherofsyntheticmaterial.Valvehasaliftstopwhich moleculesgasestohighpressurehydraulicfluids. provides safe free outlet, shock-absorbing, muffled opening andnoreductionofcrosssection.Maximumflowvelocitynot � DistributedStresses--Stressesduetoserviceflexural morethan8m/sec(forhigherflowvelocitiesspecialtestsare loadingaredistributedatseveralpointsinthejoint,thus required). stressconcentrationinthebiteisminimized. � VibrationControl--Therearbeveloftheferrulefirmly OpeningPressure:Approximately1barstandard(onrequest gripstubing,thusdampeningtheeffectsofsystemvibration also0.2,0.5,2,3,4,5&6barareavailable).Pleasespecify inthejoint. nonstandardopeningpressuresonorderasfollows:TubeFitting � ProgressiveRingDesign--Theprogressiveringdesign partnumber,openingpressure,material.Ex:RHD12L2BCFisa providesasecondbiteforimprovedreliabilityandhigher RHD12LCFwith2baropeningpressure.Toleranceof(cracking) workingpressurecapability.Thisdesignalsodecreasesthe pressureis�20%. riskofimproperassemblybecauseofthesharp,hightorque risewhichoccurswhenthefittingisproperlytightened. � EnvelopeSize--EOfittingsarerelativelysmallandcom- TubeRecommendations pact,makingitasuitableselectionforplumbinginlimited ortightspace. Forsteelfittings: � TemperatureRating--EOfittingsaresuitableforsub- SeamlesscolddrawnsteeltubesmadefrommaterialSt.35.4 zerothroughelevatedtemperatureapplications.Service orfromconditionedbasematerialSt.37.4inaccordancewith temperatureratingislimitedbythematerialchosen. DIN1630,stateofdeliveryNBK(normalannealed)withtube outerandinnerdiametertolerancesinaccordancewithDIN � Compatibility--SinceEOfittingscanbemanufacturedfrom 2391/ISO3304.Max.hardness:HRB75. awiderangeofmetals,itscompatibilityfactorwithvarious fluidsandatmosphericconditionsisvirtuallylimitless.One Forstainlesssteelfittings: simplyhastoselectandspecifyEOfittingsfromanaccept- Materialno.1.4571and1.4541 ablematerialthatbestsatisfiestheserviceconditions. Seamlessdrawntubesmadefromaustenitic,stainlesssteel � TubeWall--EOfittingsaresuitableforusewithlightwall, materialsno.1.4571and1.4541,inaccordancewithDIN/EN/ mediumwall,heavywall,andextraheavywalltubing.(Light ISO1127.Max.hardness:HRB90. walltubemayrequiresupportsleeve(VH),asshownin Assembly/InstallationSection.) These tubes are particularly recommended for tube fittings, sincethetubeouterdiameterandwallthickness,tolerances � Re-Usability / Remakeability -- Joints can be disas- correspond to those of steel tubes in accordance with DIN sembledandreassembledmanytimestofacilitatesystem 2391/ISO3304. maintenance.Thisreducesthelaborandmaterialcosts thatwouldotherwiseresultfromtubeandfittingsreplace- Forbrassfittings: ment. Seamlessdrawncoppertubemadefrommaterialwithshort � Assembly--Noexpensive,complicatedtoolingisneces- codeSF-CuF37inaccordancewithDIN1786. sarytoassembleEOfittings.Assemblyissimplewhenthe proceduresdescribedintheAssembly/Installationsection Tubewallthicknesses: arefollowed(seepagesT28-T33). Inordertodeterminethenecesarytubewallthicknessesfor � Materials--EOfittingscanbemanufacturedfromalmost applications,refertothecalculatedpressuresprovidedinthe anymetallicmaterial.Themorepopularmaterialscurrently tablesforEOmetrictubing.ThecalculatedpressuresDIN2413-I usedforEOfittingsare:stainlesssteel,carbonsteel,and areforstaticandDIN2413-IIIfordynamicloads. brass.Onrequest,theTubeFittingDivisionwillmachine EO fittingsfromotherappropriatematerialspecifiedby Themaximumwallthicknessisbasedonthepressureholding users. capacityofthefitting.Insomecases,thewallthicknessofthe � Manufacture--EOfittingsaremanufacturedundertight tubemightbetoothinforreliableserviceandaninsertmustbe quality control which ensures that the product routinely usedtopreventexcessivetubecollapse.Seeassemblysection satisfiesorsurpassestherequirementsofthepertinent forrecommendedtubewallthicknesses. industrialstandards. Plastictube: � WorldWide Popularity -- The bite type fitting design has worldwide acceptance and is especially popular in EOfittingsaresuitableforusewithvarioustypesofplastictubes Europe. suchasnylon,polyethylene,etc.Whenusedwithplastictube, aninsert(seepageF15)mustbeusedtopreventtubepullout duetotensileloading. F8 ParkerHannifinCorporation TubeFittingsDivision Columbus,Ohio http://www.parker.com/tfd
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