Goodyear Rubber Products





	Home About Us Location Maps Products Full PDF Catalogs Quote Contact Us

<< Previous Page

Click Here to open this page in a new window.

Next Page >>

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