Dikɔdin trɛd fitin dɛn: NPSM, NPTF, NPT, ɛn BSPT bin ɛksplen

Yu de trobul bay we yu nɔ ɔndastand NPSM, NPTF, NPT, ɛn BSPT trɛd? Dis atikul go gayd yu fɔ ɔndastand dɛn trɛd ya ditayli, ɛn tich yu aw fɔ instɔl dɛn wit impɔtant tin dɛn fɔ tink bɔt.

Ditayl analisis fɔ di kayn trɛd dɛn .

NPT (Nashɔnal Paip Taper) Thread dɛn .

Difinishɔn, kwaliti dɛn, ɛn dizayn bɛsis dɛn .

NPT tinap fɔ nashɔnal paip tapered . Na wan kayn tɛpa trɛd  we dɛn kin yuz fɔ jɔyn paip ɛn fitin dɛn. Na dis yu nid fɔ no:

l tapered threads : NPT threads taper pan wan ret we na 1/16 inch pan wan inch, we min se dɛn kin smɔl to di ɛnd.

L Thread Standards : Dɛn de fala di ANSI/ASME B1.20.1  standad.

l Thread angle : Di trɛd dɛn gɛt 60° flank angle ..

l Siling efyushɔn : Dɛn kin mek wan mɛkanikal sil  bay wan intafɛreshɔn we fit  bitwin di trɛd kres  ɛn di rut dɛn ..

Aplikeshɔn dɛn na paip sistem ɛn di industri yuz .

NPT thread dem de evriwea na preshos sistem . Dɛn kin yuz dɛn fɔ mek shɔ se wan sil we nɔ gɛt lik  na:

l Fluid ɛn gas transfa : paip dɛn we de kɛr wata, ɔyl, ɔ gas.

l Prɛshɔn kalibreshɔn sistem : Ikwipmɛnt we de mɛzhɔ prɛshɔn.

Di industri dɛm we de yuz NPT thread dɛn na:

L Manufakchurin .

L Ɔtomotiv .

L Aerospace na di .

Instɔlɛshɔn tips, di bɛst we fɔ du tin, ɛn di kɔmɔn we aw dɛn de yuz am .

We yu de instɔl NPT trɛd dɛn, fala dɛn bɛst we ya:

1. Yuz PTFE tep : Wrap PTFE tep  (Teflon) rawnd di man thread fɔ mek di sil bɛtɛ.

2. Nɔ ɔva-tayt : If yu tay yu pasmak, i kin mek yu gall , usay di trɛd dɛn kin pwɛl.

3. Chek fɔ lik : Ɔltɛm tɛst di kɔnɛkshɔn fɔ lik.

Di kɔmɔn tin dɛn we dɛn kin yuz na:

l Connecting Pipes : Lɛk na yu os in plaba.

l Fitins : Lɛk ɛlb ɔ ti we de ɛp fɔ chenj di say we di flɔ de go.

Advantej, limiteshɔn, ɛn difrɛns frɔm NPTF .

Di bɛnifit dɛn we pɔsin kin gɛt:

L Leak-Free Connection : Dɛn mek dɛn fɔ mek wan tayt sil.

l Bɔku pipul dɛn aksept : NPT na di standad na bɔku industri dɛn.

Di tin dɛn we yu nɔ fɔ du:

l Risk fɔ tayt pasmak : I pɔsibul fɔ pwɛl di trɛd dɛn.

L kin nid sialant : Sɔntɛnde, dɛn nid fɔ gɛt ɛkstra silin fɔ mek shɔ se dɛn sil we nɔ gɛt lik.

Difrɛns frɔm NPTF:

L NPTF , ɔ Nashɔnal Payp Taper Fiul , we dɛn kin kɔl bak Drayseal Amɛrikan Nashɔnal Stɛndad Tapa Payp Thread , dɛn mek am fɔ gi tayt sil we nɔ nid fɔ gɛt ɛkstra silant.

L NPTF threads  gɛt smɔl difrɛn dizayn we de alaw fɔ wan mɛkanikal kɔnɛkshɔn  we nɔ gɛt di yus fɔ PTFE tep  ɔ ɔda silin, nɔ lɛk NPT thread we kin nid dɛn bɔku tɛm.

Mɛmba se, NPT na fɔ mek wan tapered paip thread  kɔnɛkshɔn we dɛn kin abop pan ɛn we dɛn kin yuz bɔku bɔku wan. If yu de wok pan motoka ɔ yu de fiks lik na os, fɔ no bɔt NPT trɛd de ɛp yu fɔ mek bɛtɛ kɔnɛkshɔn.

 

NPTF (nashɔnal paip taper fiul) trɛd dɛn .

Ovaviu fɔ NPTF trɛd standad ɛn dizayn .

NPTF Threads, we dɛn kin kɔl bak Dryseal American National Standard Taper Pipe Thread , de fala di ANSI B1.20.3  standad dɛn. Dɛn trɛd ya tan lɛk NPT bɔt dɛn mek dɛn fɔ mek dɛn gɛt bɛtɛ sil. NPTF trɛd dɛn gɛt 60° flank angle  ɛn mek wan mɛkanikal sil  tru wan intafɛreshɔn we fit  bitwin di trɛd kres ɛn di rut dɛn. Dis min se di trɛd dɛn kin krɔs togɛda fɔ mek wan tayt sil we nɔ nid ɛkstra silant.

Difrɛns bitwin NPT ɛn NPTF .

Wail NPT en NPTF thread dem luk lek lek, dia dizain dem difren . NPT thread dɛn de we dɛn mek ɔnda ANSI/ASME B1.20.1 , ɛn dɛn kin nid PTFE tep  ɔ ɔda silin dɛn fɔ mek shɔ se kɔnɛkshɔn nɔ gɛt lik . Na di ɔda say, NPTF trɛd dɛn, we de fala ANSI B1.20.3 , dɛn mek am fɔ mɛsh tayt ɛn mek wan sil we nɔ gɛt ɛkstra matirial. Dɛn kin ajɔst dis bay wan dizayn we de alaw di trɛd kres  ɛn rut dɛn  fɔ skwash togɛda, we de mek wan sil we nɔ gɛt lik ..

Aplikeshɔn dɛn insay fiul ɛn gas, we de ajɔst di sil dɛn we nɔ gɛt lik sil .

Insay di wɔl fɔ fiul ɛn gas , NPTF trɛd dɛn na go-to chuk. Dɛn mek dɛn fɔ mek wan sil we nɔ gɛt lik  we rili impɔtant na prɛshɔn sistem . Dɛn sistɛm ya nɔ ebul fɔ pe fɔ lik, as ivin smɔl wan kin denja. NPTF thread dɛn de yuz insay prɛshɔn kalibreshɔn sistem  ɛn pat dɛn usay fɔ mentɛn di klin ɛn intɛgriti fɔ di fluid ɔ gas na impɔtant tin.

Yuz sɛnɛriɔ, kɔmpitibliti, ɛn intachɛnjabiliti wit NPT .

NPTF thread dɛn kin de bɔku tɛm na aplikeshɔn usay wan sil we nɔ gɛt lik  impɔtant, ɛn dɛn nɔ want ɛni sialant. Bɔt pan ɔl we dɛn kin miks NPTF ɛn NPT trɛd dɛn sɔm tɛm dɛn kin miks, dis nɔ kin sef ɔ i kin wok ɔltɛm. Dɛn kin skru NPTF trɛd dɛn insay NPT fitin dɛn, bɔt di rivas nɔ kin sial fayn bikɔs dɛn mek NPTF fɔ mek i fit mɔ. I impɔtant fɔ chɛk kɔmpitibliti bifo yu miks dɛn fɔ avɔyd prɔblɛm dɛn lɛk galling  ɔ improper sealing.

NPSM (nashɔnal paip strayt mɛkanikal) trɛd dɛn .

Difinishɔn, kwaliti dɛn, ɛn di bɛsis fɔ NPSM trɛd dɛn .

NPSM thread na wan kayn strayt paip thread . Dɛn de fala ANSI/ASME B1.20.1  standad. Dɛn mek dɛn trɛd ya fɔ mek dɛn gɛt mɛkanikal kɔnɛkshɔn  pas fɔ mek wan sil. Dɛn gɛt 60° flank angle  ɛn dɛn min fɔ yuz am wit gasket  ɔ O-ring  fɔ mek kɔnɛkshɔn we nɔ gɛt lik.

Ki pɔynt dɛn  bɔt NPSM trɛd dɛn: - Dɛn na paralel , we min se di dayamita kɔnsistɛns. - NPSM thread nɔ de taper lɛk NPT  (nashɔnal paip tapered) trɛd. - Dɛn kin yuz dɛn fɔ mek mɛkanikal kɔnɛkshɔn . - Siling efyushɔn  kɔmɔt frɔm gasket, nɔto di trɛd dɛnsɛf.

Aplikeshɔn dɛn na haydrolik sistem ɛn ideal yus kes dɛn .

Bɔku tɛm dɛn kin fɛn NPSM trɛd dɛn na haydrolik sistem  usay wan sil we nɔ gɛt lik  impɔtant. Dɛn de wok fayn fayn wan na prɛshɔn sistɛm dɛn  lɛk prɛshɔn kalibreshɔn sistem . Di uman paip swivel  fitin dɛn kin kɔmɔn wit NPSM trɛd dɛn, we kin alaw fɔ izi fɔ instɔl na tayt ples dɛn.

Ideal yus kes  inklud: - Usay wan mɛkanikal sil  impɔtant pas wan thread sil. - Sistem dɛn we nid fɔ disassembly ɔltɛm ɛn ri-assembly. - We yu de yuz gasket  ɔ O-ring  na in dɛn kin lɛk pas trɛd sialant ..

Kɔmpiashɔn wit ɔda kayn trɛd, intachɛnjabiliti wit NPTF .

Sɔntɛnde, dɛn kin kɔnfyus NPSM wit NPTF  (nashɔnal paip taper fiul), we dɛn kin kɔl bak Drayseal American National Standard Taper Pipe Thread . Na so dɛn kɔmpia:

L NPTF  threads dɛn mek fɔ gi wan sil we nɔ gɛt lik  ɛn we nɔ nid fɔ gɛt ɔda sialant dɛn. Dɛn kin mek wan intafɛreshɔn we fit  bitwin di trɛd kres  ɛn di trɛd rut dɛn ..

L NPSM  threads nid gasket  ɔ O-ring  fɔ mek shɔ se kɔnɛkshɔn nɔ de lik ..

L NPSM nɔ kin chenj wit NPTF  ɔ NPT  bikɔs ɔf difrɛn trɛd standad dɛn.

Silin Efisiensi ɛn Indastri Aplikeshɔn dɛn .

NPSM thread dɛn valyu fɔ dɛn silin efyushɔn  we dɛn yuz am wit wan prɔpa mɛkanikal sil . Dɛn kin yuz dɛn bɔku say dɛn na: - Fluid ɛn gas transfa  aplikeshɔn dɛn. - Indastri dɛm we nid wan rili mɛkanikal kɔnɛkshɔn ..

Indastri aplikeshɔn dɛn  inklud: - Wata ɛn west wata tritmɛnt. - Nyumɛtik sistɛm dɛn. - Lubrikeshɔn sistem dɛn.

BSPT (British Standard Pipe Taper) Threads

Introdyushɔn to BSPT trɛd standad dɛn .

We wi de tɔk bɔt BSPT trɛd , wi de dayvɔs insay wan wɔl we gɛt paip ɛn kɔnɛkshɔn we impɔtant fɔ mek dɛn transfa fluid ɛn gas . BSPT tinap fɔ British standad paip taper . Na wan kayn tɛpa trɛd  we dɛn kin yuz fɔ mek wan sil we nɔ gɛt lik . Dis standad de autlayn insay dɔkyumɛnt dɛn lɛk BS 21  ɛn ISO 7 ..

Distinkt ficha ɛn kɔmpiashɔn wit NPT ɛn NPTF .

BSPT thread dem na yunik. Dɛn gɛt 60° flank angle  ɛn dɛn tap, we min se dɛn kin smɔl as dɛn de go dip. Dis difrɛn frɔm NPT threads , we dɛn tap bak bɔt dɛn gɛt 60° trɛd angle we dɛn yuz na Amɛrika, as dɛn dɔn difayn am bay ANSI/ASME B1.20.1..

Naw, lɛ wi kɔmpia BSPT wit NPTF . NPTF, ɔ Nashɔnal Payp Taper Fiul , we dɛn kin kɔl bɔku tɛm Dryseal American National Standard Taper Pipe Thread , as ANSI B1.20.3 , dɛn mek am fɔ wan tayt sil pas NPT. I de ajɔst dis bay we i de mek wan intafɛreshɔn we fit  bitwin di trɛd kres  ɛn di trɛd rut dɛn . BSPT nɔ de abop pan dis fit fɔ sial. Bifo dat, i kin nid wan trɛd sialant  lɛk PTFE tep (Teflon)  ɔ gasket  fɔ mek i nɔ lik.

BSPT in Intanɛshɔnal ɛn Globɛl Aplikeshɔn dɛn .

BSPT thread dɛn de yuz bɔku bɔku wan ausayd Amɛrika, mɔ na kɔntri dɛn we de fala British injinɛri standad. Bɔku tɛm dɛn kin si dɛn na prɛshɔn sistɛm  ɛn prɛshɔn kalibreshɔn sistem . Dɛn ebul fɔ mek wan mɛkanikal sil  de mek dɛn fayn fɔ bɔku intanashɔnal aplikeshɔn dɛn.

Kɔmparativ analisis wit ɔda trɛd tayp dɛn .

We wi luk BSPT nia ɔda kayn trɛd dɛn lɛk NPSM (nashɔnal paip strayt mɛkanikal)  ɛn BSPP (British standad paralel paip) , wi si se BSPT na fɔ mek wan kɔnɛkshɔn we nɔ gɛt lik  insay tapered trɛd, we NPSM ɛn BSPP na fɔ strayt paip trɛd dɛn . BSPT threads mek wan mekanik konekshon  witout nid wan bonded ring sil  or O-ring , no laik BSPP we kin nid dem ya fo sial.

 

BSPT threads na big tin fɔ situeshɔn dɛn usay yu nid wan sɔlid, lik-fri sil  we nɔ gɛt di kɔmplisiti fɔ ɔda silin mɛtɔd dɛn. Dɛn simpul fɔ yuz pas NPTF trɛd , we nid prɛsis prɛshɔn kalibreshɔn  fɔ avɔyd prɔblɛm dɛn lɛk galling  ɔ damej frɔm ɔva-tayt.

Teknik spesifikeshɔn ɛn standad dɛn .

standad mɛzhɔmɛnt, trɛd kɔnt, ɛn ANSI standad dɛn .

We wi de tɔk bɔt trɛd fitin dɛn  lɛk NPSM, NPTF, NPT, ɛn BSPT, na ɔltin bɔt aw dɛn de kɔnɛkt ɛn sial paip. Dɛn trɛd standad ya  de ɛp wi fɔ mek shɔ se tin dɛn fit togɛda rayt. Tink bɔt am lɛk Lego blɔk – dɛn nid fɔ mach pafɛkt wan fɔ stik togɛda.

L NPSM  en NP  dem geht strayt thread, we min se dem no geht tayt as dem skru in.

L NPT , NPTF , ɛn BSPT  na tapered. Dis min se dɛn kin gɛt tayt, kayn lɛk fɛnɛl, we kin ɛp fɔ stɔp lik.

Di American National Standards Institute (ANSI)  de sɛt lɔ fɔ dɛn trɛd ya na di US Fɔ ɛgzampul, ANSI/ASME B1.20.1  na fɔ NPT trɛd dɛn. dem tehl wi aw big di thread dem fo bi, aw bohku de na inch (dat na di thread count), en di shep we dem nid fo geht.

Material, Manufacturing Standards, ɛn Kɔmplians .

Matirial dɛn impɔtant bɔku bɔku wan. Most fitin na metal, lek steel or brass, bikos dem strong. Di mek we dɛn mek dɛn pat ya de fala strikt lɔ dɛn fɔ mek shɔ se dɛn sef ɛn dɛn go las fɔ lɔng tɛm. Dis na bɔt fɔ fala di lɔ  – lɛk fɔ fala wan rɛsipɛkt fɔ bek pafɛkt kek ɛvri tɛm.

L ANSI B1.20.3  ɛn AS 1722.1  na sɔm pan di standad dɛn we de gayd aw fɔ mek thread fɔ prɛshɔn sistem dɛn ..

L Na di UK, dɛn de yuz BS 21  ɛn ISO 7  fɔ BSPT  ɛn BSPP  trɛd dɛn.

Di wan dɛn we de mek di tin dɛn gɛt fɔ mek shɔ bak se dɛn trɛd dɛn kin ebul fɔ handle di prɛshɔn we dɛn fɔ de wit we dɛn nɔ lik ɔ brok. Na de kwaliti ashurans  de kam in.

Ɔndastand di dimɛnshɔn dɛn we di trɛd gɛt, di tolɛreshɔn dɛn, ɛn di kwaliti ɛshyurishɔn .

Thread dimenshon dem inklud di pitch  (aw fa apat di thread dem) en di angle  of di thread dem. Fɔ ɛgzampul, BSPT trɛd dɛn gɛt 60° flank angle , we na pat pan wetin de mek dɛn difrɛn.

L tolerans  na di smɔl difrɛns dɛn we dɛn alaw insay di sayz ɛn shep fɔ di trɛd dɛn. Dem laik di wiggle rum in fitin pies togeda.

l Kwaliti ɛshyurishɔn  min fɔ chɛk ɛvri pat fɔ mek shɔ se i mit di standad dɛn. I tan lɛk ticha we de gred yu homwok fɔ mek shɔ se yu gɛt di ansa dɛn rayt.

Fɔ wan sil we nɔ gɛt lik , PTFE tep (Teflon) , gasket , ɔ O-ring dɛn wit dɛn trɛd dɛn ya.  dɛn kin yuz pat dɛn lɛk Tepred thread  lek NPT  en BSPT  kin plenti taims sial on dem own bikos of dem shep – dem get tayt en tayt as dem skru in.

Di tin dɛn we pɔsin kin du kwik kwik wan:

L NPT  threads na wan we dɛn mek fɔ bi intafɛreshɔn fit , we min se dɛn de mek wan mɛkanikal sil  bay we dɛn de swɛt togɛda.

L NPSM threads  de wok wit wan uman paip swivel  – wan kayn nat we de mek yu skru am pan witout twist di ol paip.

L NPTF thread dɛn  kin kɔl sɔm tɛm Dryseal American National Standard Taper Pipe Thread  bikɔs dɛn min fɔ sial we dɛn nɔ nid ɛkstra tin lɛk tep ɔ paste.

Praktikal aplikeshɔn ɛn kɔmparativ analisis .

Rial-wɔl aplikeshɔn ɛn kes stɔdi dɛn fɔ difrɛn kayn trɛd dɛn .

We i kam pan trɛd fitin dɛn  we dɛn yuz na prɛshɔn sistem , di ditil dɛn impɔtant. Lɛ wi luk aw dɛn de yuz dɛn trɛd ya na di rial wɔl.

NPT thread dɛn  kin de bɔku tɛm na jenɛral industrial aplikeshɔn dɛn. Fɔ ɛgzampul, wan manifakta fɔ prɛshɔn kalibreshɔn sistem  kin yuz NPT fitin bikɔs ɔf dɛn kɔmpatibiliti wit wan big rɛnj ɔf ikwipmɛnt.

NPTF threads , we dɛn kin kɔl bak Dryseal American National Standard Taper Pipe Thread , dɛn mek am fɔ mek dɛn gɛt mɔ sikyu, lik-fri sil we nɔ nid fɔ gɛt ɛkstra trɛd silant . Dɛn kin yuz dɛn na aplikeshɔn usay wan mɛkanikal sil  impɔtant, lɛk insay fiul dispɛns ikwipmɛnt.

NPSM thread , ɔ nashɔnal paip strayt mɛkanikal , dɛn kin yuz am wit wan uman paip swivel . Wan kes stɔdi kin involv wan haydrolik sistɛm usay NPSM fitin dɛn kin alaw fɔ mek i izi fɔ asɛmbli ɛn mentenɛns.

BSPT threads , wit dɛn 60° flank angle , na kɔmɔn tin na intanashɔnal aplikeshɔn. Bɔku tɛm dɛn kin pik dɛn fɔ dɛn silin efyushɔn  na fluid ɛn gas transfa sistɛm dɛn.

Kɔmparativ analisis: NPT vs. NPTF, NPSM vs. NPT, BSPT in yon pozishɔn

Lɛ wi brok di difrɛns dɛn:

L NPT vs. NPTF : Dɛn tu gɛt wan tapered paip trɛd , bɔt NPTF de gi intafɛreshɔn fit  bitwin di trɛd kres  ɛn di trɛd rut , we de pul di nid fɔ wan sialant.

L NPSM vs. NPT : NPSM gɛt strayt paip trɛd  ɛn i nid fɔ gɛt gasket ɔ O-ring fɔ mek kɔnɛkshɔn we nɔ gɛt lik . NPT in tapered threads de mek wan sil bay di thread dem sef.

L BSPT in yon pozishɔn : BSPT trɛd dɛn fiba NPT bɔt dɛn gɛt difrɛn trɛd angle  ɛn pitch , we de mek dɛn nɔ intachɛnjabl wit NPT fitin dɛn.

Ekspɛkt insayt ɛn industri pɔshɔnal dɛn advays bɔt thread fitin dɛn

Di wan dɛn we sabi bɔt di industri kin tɔk se dɛn fɔ yuz PTFE tep (Teflon)  ɔ wan bond ring sil  wit NPT fitin fɔ mek shɔ se wan sil we nɔ gɛt lik . Fɔ NPTF, i rili impɔtant fɔ mek shɔ se dɛn gɛt di rayt ɛnjɔymɛnt fɔ tek advantej pan in Dryseal  function.

We yu de wok wit BSPT Kɔnɛkshɔn , mɛmba se dɛn nɔ kɔmpitabl wit NPT ɔ NPTF we nɔ gɛt adapt. Masta sabi bukman dɛn advays fɔ chɛk di trɛd standad dɛn  lɛk ANSI/ASME B1.20.1  fɔ NPT, ANSI B1.20.3  fɔ NPTF, ɔ ISO 7  ɛn BS 21  fɔ BSPT fɔ mek shɔ se dɛn fit am fayn fayn wan.

Galling , ɔ thread damej, na risk wit dɛn fitin dɛn ya. Fɔ mek i nɔ apin, nɔ ɛva ɔva-tayt ɛn ɔltɛm fala di prɛshɔn sistɛm dɛn ' spɛsifikɛshɔn dɛn.

Instɔlɛshɔn, Mentɛnans, ɛn di bɛst we fɔ du tin .

Di bɛst we fɔ du tin fɔ instɔl difrɛn kayn trɛd dɛn .

We yu de instɔl NPSM , NPTF , NPT , ɔ BSPT  fitin dɛn, i impɔtant fɔ fala patikyula gaydlayn dɛn fɔ mek shɔ se kɔnɛkshɔn we nɔ gɛt lik . Na dis wan na wan kwik gayd:

L NPT  ɛn NPTF : .

l Put PTFE tep  ɔ wan fayn trɛd sialant  to di man trɛd.

l Tayt di fitin wit an, dɔn yuz wan rench fɔ di las tɔn dɛn.

l Tek tɛm mek yu nɔ tayt pasmak, bikɔs dis kin pwɛl di trɛd dɛn.

L BSPT :

L Similar wit NPT, yuz PTFE tep  ɔ thread sealant ..

l Tayt fayn fayn wan fɔ mek yu ebul fɔ gɛt wan mɛkanikal sil ..

L NPSM : .

l Dɛn mek dɛn trɛd ya fɔ mek dɛn go wit wan uman paip swivel ..

l Yuz gasket  ɔ O-ring  fɔ sial.

l Nɔ tay pasmak, bikɔs i kin mek di gasket pwɛl ..

Kɔmɔn chalenj dɛn we dɛn kin gɛt we dɛn de instɔl ɛn aw fɔ win dɛn .

l Krɔs-thrɛd : I kin apin we trɛd dɛn nɔ alaynɛd. Ɔltɛm stat wit an fɔ mek i nɔ apin.

l Galling : Metal-to-metal kontak kin mek dis. Yuz lɔbrik fɔ avɔyd am.

l Ova-tayt : I kin mek di trɛd damej. Fɔ fala di prɛshɔn kalibreshɔn sistem  gaydlayn fɔ di rayt tɔk.

L Leakage : If liks apin, chɛk fɔ aut ɔf rawnd  ɛn mek shɔ se dɛn ɛnjɔy di trɛd fayn fayn wan ..

Mentɛnans, trɔbulshut, ɛn mek shɔ se di trɛd fitin dɛn go de fɔ lɔng tɛm .

l Inspekshɔn ɔltɛm : Chɛk fɔ sayn dɛn we de sho se pɔsin dɔn wɛr, kɔrɛshɔn, ɔ damej.

L Klin : Kip di trɛd dɛn klin. Dɔti kin mek lik.

l Riaplikeshɔn fɔ silin : As tɛm de go, di silin dɛn kin pwɛl. Riaplai bak as nid de.

l Di rayt we fɔ kip di tin dɛn : Kip spay fitin dɛn na say we dray ɛn klin.

Mɛmba :

L  NPT  ɛn NPTF  trɛd dɛn de mek wan sil bay wan intafɛreshɔn we fit  bitwin di trɛd kres  ɛn di rut dɛn ..

L  BSPT  threads de sial bay di thread dem onli, wit di 60° flank angle  we de ɛp fɔ sial efyushɔn.

L  NPSM  threads de dipen pan wan mekanik kɔnɛkshɔn , bɔku tɛm dɛn kin ɛnjɔy am wit gasket  ɔ O-ring ..

FAQS pan thread fitin dɛn .

Ki difrɛns bitwin NPSM, NPTF, NPT, ɛn BSPT trɛd dɛn

We i kam pan thread fitin , i tan lɛk pazl. Ɛni wan pan dɛn fit insay wan patikyula we. NPSM  (nashɔnal paip strayt mɛkanikal) trɛd dɛn na stret ɛn dɛn mek am fɔ fri-fit mɛkanikal jɔyn dɛn. NPT  (nashɔnal paip tapered) trɛd dɛn de tap ɛn mek wan tayt sil bay we dɛn fit dip as dɛn skru in. NPTF  (National Pipe Taper Fuel), we dɛn kin kɔl bak Dryseal American National Standard Taper Pipe Thread , na di sem tin lɛk NPT bɔt dɛn mek am fɔ bɛtɛ sil we nɔ nid ɛkstra silant. BSPT  (British standad paip taper) thread, na di ɔda say, dɛn kin yuz fɔ mek tayt sil na prɛshɔn sistem ɛn dɛn gɛt 55° flank angle, we difrɛn frɔm di 60° angle we dɛn kin yuz na NPT trɛd.

Intachɛnjabiliti, kɔnɛkshɔn dɛn we nɔ gɛt lik, ɛn kɔmɔn mistek dɛn .

Naw, yu kin miks dɛn ɔp? Nɔto rili. Intachenjabiliti  nɔto gem we yu want fɔ ple wit trɛd fitin. Yuz NPT  wit NPTF  kin wok sɔm tɛm, bɔt i nɔ gɛt garanti fɔ bi lik-fri kɔnɛkshɔn . ɛn BSPT ? Na wan ol difrɛn stori bikɔs ɔf in yon trɛd angle ɛn pitch. Di mistek we dɛn kin mek pas ɔl? Assuming dem ol fit togeda. Ɔltɛm chɛk di standad dɛn, lɛk ANSI/ASME B1.20.1  fɔ NPT, fɔ avɔyd lik ɔ damej.

Ditarmin di rayt trɛd tayp fɔ spɛshal aplikeshɔn dɛn .

So, aw yu go pik di rayt wan? Tink bɔt di wok. Fɔ fluid ɛn gas transfa , wan sil we nɔ gɛt  lik na di men tin. If yu de wok wit Pressure Systems , BSPT  kin bi di we fɔ go. Fɔ aplikeshɔn dɛn we nid mɛkanikal sil  we nɔ gɛt silant, NPTF  na yu padi. Ɛn fɔ wan mɛkanikal kɔnɛkshɔn  we dɛn kin tek apat izi wan, NPSM  kin bi di bɛst chuk.

Atikul FAQ dɛn we de adrɛs prɛktikal kɔnsyans dɛn .

L Wetin na gud sialant? 

PTFE tep  (Teflon) kin yuz bɔku tɛm wit NPT trɛd fɔ ɛp fɔ sial.

l Aw tayt a fɔ skru dɛn? 

Go fɔ wan intafɛreshɔn fit —tayt inof so di trɛd kres  ɛn rut dɛn  de pres togɛda, bɔt nɔto so tayt dat yu strip di trɛd dɛn.

l Wetin bɔt di angul dɛn? 

Mɛmba se, NPT  ɛn NPTF  gɛt 60° flank angle , ɛn BSPT  gɛt 55° angul.

l A kin yuz dɛn fitin dɛn ya bak?

 Sɔntɛnde, bɔt wach fɔ galling —we trɛd dɛn kin west ɛn stik togɛda.

L Wetin fɔ du if i lik?

 Chek fɔ si if yu dɔn pwɛl ɔ tray fɔ gɛt bond ring sil  ɔ O-ring  fɔ mek yu gɛt ɛkstra layt fɔ protɛkt yu.

Mɛmba se fɔ gɛt di rayt fit tan lɛk fɔ pik di rayt tin fɔ di wok. Na ɔltin bɔt di ditil dɛn. Kip dɛn advays ya na yu maynd, ɛn yu go de na yu we fɔ masta thread fitin  fɔ kɔnɛkshɔn dɛn we nɔ gɛt lik.

Dɔn

We wi de tɔk bɔt trɛd fitin dɛn  lɛk NPSM , NPTF , NPT , ɛn BSPT , wi de tɔk bɔt di pat dɛn we de ɛp wi fɔ jɔyn paip ɛn hos dɛn togɛda. Dɛn fitin dɛn ya kin mek shɔ se wi wata, gas, ɛn ɔda tin dɛn kin muf tru paip dɛn we dɛn nɔ lik. Na dis wi don lan:

L NPT  na wan kayn tapered thread  we dɛn kin yuz bɔku na USA. I de mek tayt fit bikɔs di trɛd dɛn kin smɔl smɔl na wan ɛnd, dɛn kayn lɛk kɔn.

L NPTF , we dɛn kin kɔl bak Drayseal American National Standard Taper Pipe Thread , tan lɛk NPT bɔt dɛn mek am fɔ mek wan ivin tayt lik-fri sil  we nɔ nid ɛkstra tin lɛk PTFE tep.

L NPSM , ɔ Nashɔnal Payp Stret Mɛkanikal , gɛt stret paip trɛd dɛn . I fayn fɔ mek wan mɛkanikal kɔnɛkshɔn  we dɛn kin tek apat ɛn put am bak togɛda izi wan.

L BSPT , shɔt fɔ British standad paip taper , na di sem wit NPT bɔt i gɛt difrɛn trɛd angle  ɛn pitch . Na kɔmɔn tin na ples dɛn we de yuz British standad.

Mɛmba, fɔ gɛt di rayt fit min fɔ no yu trɛd standad  ɛn pik di rayt kayn fɔ yu prɛshɔn sistɛm dɛn ..

Future Trends in Thread Fitting Technology ɛn Indastri Rikɔmɛndishɔn dɛn

Di wɔl fɔ trɛd fitin dɛn  de kɔntinyu fɔ chenj. Na dis na wetin de na di ɔrayzin:

l Siling efisiensi  de kam beta. Wi de fain we fɔ mek kɔnɛkshɔn dɛn we supa tayt we wi nɔ nid ɛkstra gasket  ɔ O-ring dɛn ..

L matirial dɛn  de impɔtant, bak. Dis min se fitin kin ebul fɔ handle mɔ prɛshɔn ɛn las fɔ lɔng tɛm.

l Ɛkspɛkt dɛn se ɔltɛm fɔ fala di industri rɛkɔmɛndishɔn , lɛk fɔ yuz ANSI/ASME B1.20.1  fɔ NPT ɔ ISO 7  fɔ BSPT, fɔ mek shɔ se ɔltin fit jɔs rayt.