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4300Catalog GeneralTechnical Thischallengehasbeenmetthroughaveryintensiveandco- ReturnT ConnectorsForWorldClass I o operativeeffortbythemembernationsofsub-committee4ofthe ndex ISOTechnicalCommittee131(ISO/TC131).Thesubcommittee Products startedthiseffortin1989andhascompleteddevelopmentof ConnectorProliferation: performancebasedstandardsforthemostwidelyusedports andtube/hoseconnectionstolimitproliferation,andstrongly Todaymanydifferenttypesofconnectorsarebeingusedaround endorsingthosewithelastomericsealstoeliminateleakagein theworld.Mostofthesehavecomeaboutthroughhistoricaluse hydraulicsystems. andlocalpreferenceforacertaindesignconcept.Somecon- nectionsoftheNorthAmericanoriginsuchasfourboltflange, Fiveports,fourthreadedandthefourboltflange,andfourtube/ SAEstraightthreadand37�flarehavefoundsomedegreeof hoseconnectionsasshownonthefollowingpage(Fig.U1)have acceptanceanduseinEuropeandJapanasaresultofthe beenstandardized.Thethreadedportsandtube/hoseconnec- exportsofU.S.machinerytotheregionsafterWorldWarII.But, tionsarepairedintheISO8434seriesoffittingstandardsas largemajorityofusageismadeupofavarietyofindigenous definedinthetablebelow. portandtubeconnections.Aquickreviewofthecommonlyused Tominimizeproliferationinportusageandpromoteleakfree connectionsaroundtheworldrevealsthatthereareeightdifferent connections,thesub-committeestronglyendorsesuseofISO portconnectionsandelevendifferenttube/hoseconnections. 6149portforallnewdesignsbyincludingthefollowingstate- PortConnections: mentinallportstandards: NPTF ISO6149(MetricStraight "Forthreadedportsandstudendsspecifiedinnew SAEStraightThread(UN/UNF) ThreadO-ringPort) designsinhydraulicfluidpowerapplications,onlyISO 4-BoltFlange JIS-PT(BSPT) 6149shallbeused.Threadedportsandstudendsin ISO1179(BSPP) JIS-B2351(BSPPsimilar accordancewithISO1179,ISO9974andISO11926 ISO9974(Metric) toSAE) shallnotbeusedfornewdesignsinhydraulicfluid Tube/HoseConnections: powerapplications." 37�Flare(SAE) 30�Flare,BSPP(JIS) Onthetube/hoseconnectionside,onlyISO8434-3(O-ring 24�Flareless,InchThreads(SAE) 24�Flareless,Metric(JIS) FaceSeal)andISO8434-4(24�conewithweldnipple)feature 60�ConeSwivel,NPSM(SAE) 60�Cone,BSPP(JIS) elastomericsealforzeroleakperformance.Combiningthese O-RingFaceSeal(SAE) 60�Cone,Metric(JIS) with the ISO 6149 for the port connection leads to two (2) 24�Cone,Metric(DIN) 37�Flare,Metric(Russia) combinations(completefittings)foruseinleak-freeworldclass 60�Cone,BSPP(BSi) products.Theyare: TheChallenge: ISO8434-3 O-ringFaceSealandISO6149Port Leakageisnolongeracceptableinworldclassproducts.Above ISO8434-4 24�ConeWithSoftSealand proliferation,besideslimitingavailabilityandincreasingcost, ISO6149Port increasesleakagepotentialthroughmisapplications.Therefore, thechallengefacingthefluidpowerindustryistwofold--elimi- Forlargeportconnections,thefourboltflangeconnectionper nateleakageandminimizeproliferation. ISO6162(SAEJ518isincludedinISO6162)remainswidely usedandtherecommendedconnection. MeetingTheChallenge: Tube/HoseConnection 24�Cone Flareless(DIN) 37�Flare 24�Cone Application Port (BiteType) (InchThreads) ORFS WeldNipple Metric ISO6149 ISO8434-1 ISO8434-2 ISO8434-3 ISO8434-4* (SAEJ2244) BSPP ISO1179 ISO8434-1 ISO8434-2 -- ISO8434-4* (DIN3852-2) NotforNew Designsin Metric ISO9974 ISO8434-1 -- -- ISO8434-4* Power (DIN3852-1) UN/UNF ISO11926 -- ISO8434-2 -- -- (SAEJ1926) TableU1--ISOStandardPortandTube/HoseConnectionCombinations *WillbeincludedinISO8434-1atthenextrevision. Dimensionsandpressuresforreferenceonly,subjecttochange. U6 ParkerHannifinCorporation TubeFittingsDivision Columbus,Ohio http://www.parker.com/tfd
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