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4300Catalog PipeFittingsandPortAdapters Introduction AssemblyandInstallation ThisSectioncontainsadapterswiththreadtypesincluding: PleaserefertoSectionTfortheassemblyandinstallationin- NPT,NPTF,BSPT,BSPP,SAEUN/UNF,andMetric.Allthe structionsforPipeFittingsandPortAdapters. threadsinthissectionaremadetoindustryspecificationswith conformanceshowninTableG1. Thread Standard NPT ANSIB1.20.1,FED-STD-H28/7 DesignandConstruction NPTF SAEJ476,ANSIB1.20.3,FED-STD-H28/8 BSPT BS21,ISO7/1 Shapedproducts(elbows,teesandcrosses)arehotforgedand machined,whilestraightsaremanufacturedfromcolddrawn BSPP BS2779,ISO228/1 barstock.Whereapplicable,theseproductsaremadeincon- Metric ISO261,ANSIB1.13M,FED-STD-H28/21 formancewiththedesigncriteriaoftheSocietyofAutomotive UN/UNF* ANSIB1.1,FED-STD-H28/2 EngineersStandards,SAEJ514,J530. *Class2Aor2B ParkerFluidConnectorproductsmadefromsteelandbrass, TableG1--ThreadConformanceStandards forthemostpart,haveNPTFthreads.Stainlesssteelproducts mayhaveNPTorslightlymodifiedNPTthreadstominimizethe chanceofgallingonassembly. Stainless Standard Material Specifications: The standard materials Steel Steel Brass PipeFittings, usedinthemanufactureofIndustrialPipeandAdapterfittings AdaptersandPlugs ASTM Type ASTM Type ASTM Type areshowninTableG2. ForgedBodies A576 1214/1215 A182 316 B124 CA377 Note:Uponrequest,pipefittings,adaptersandplugscouldbe furnishedinmaterialsotherthanthoseshowninthematerial B16 CA360 BarStockBodies A108 12L14 A479 316 B453 CA345 specificationschart. C1010/ Finish-Zincplatingwithyellowchromate(beingchangedto ColdFormedBodies A576 -- -- -- -- C1008 zincchromium6free)isusedonallstandardsteelproducts. TableG2--StandardMaterialSpecificationsforIndustrialPipe Stainlesssteelfittingsarepassivated. FittingsandAdapters HowPortConnectionsWork Tapered("Pipe")Threads Spiral Therearethreetypesoftaperedthreadscommonlyusedin leakpath industrialapplications. �NPT/NPTF �BSPT Fig.G1--NPT:WrenchTight,NoCrest-Root �MetricTaper Contact,FlankContactOnly Allthreethreadstylesnotedaboveusethesamebasicmetal-to- metalsealingdesignforachievingaseal.Althoughverysimilar, therearedifferencesinthethreaddimensions,pitch,andflank anglethatdonotallowinterchangeability. Threadcrestand rootincontact.Gap NPT/NPTFThreads remainsatflank angles. NPTthreads,whenassembledwithoutasealant,leaveaspiral leakpathatthecrest-rootjunctionasshowninFig.G1.Toseal Fig.G2--NPTF:HandTight, pressurizedfluid,NPTthreadsrequireasuitablesealant.NPTF CresttoRootContact threads(Dryseal),ontheotherhand,whenassembled,donot leavethespiralleakpath.Thisisbecausetheyhavecontrolled truncationatthecrestandroot,ensuringmetal-to-metalcrest-root contactpriorto,orjustasthemale-femalethreadflanksmake contactasseeninFig.G2.Uponfurthertightening,thethread Fullthread formcontact crestsareflattenedoutuntiltheflanksalsomakemetal-to-metal contactasseeninFig.G3.Thus,theoreticallyatleast,thereis nopassageleftforthefluidtoleak,providedallsurfacesare flawlessanddimensionsexact.Inreality,thisisnotthecase andasealant/lubricantisnecessarytoachievealeakfree Fig.G3--NPTF:WrenchTight,Crestto RootandFlankContact joint,evenwithNPTFthreads.Thesealant/lubricantfillsall imperfectionsinthesurfacesaffectingthesealandalsoprovides lubricationtoeaseassemblyandminimizegalling. Dimensionsandpressuresforreferenceonly,subjecttochange. G4 ParkerHannifinCorporation TubeFittingsDivision Columbus,Ohio http://www.parker.com/tfd
Goodyear Rubber Products
