Dikɔdin Trɛd Fitin: NPSM, NPTF, NPT, ɛn BSPT Ɛksplen

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

Ditayl Analysis of Thread Types

NPT (Nashɔnal Paip Taper) Trɛd dɛn

Difinishɔn, Karakta, ɛn Dizayn Besik

NPT tinap fɔ Nashɔnal Paip Tapered . Na wan kayn tap trɛd  we dɛn kin yuz fɔ jɔyn paip ɛn fitin dɛn. Na dis na wetin yu nid fɔ no:

l Tapered Threads : NPT thread dεm de taper pan wan rεt we na 1/16 inch pan wan inch, we min se dεn de sכmtεm sכmtεm tכwεd di εnd.

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

l Thread Angle : Di thread dɛn gɛt 60° flank angle.

l Siling Efficiency : Dɛn de mek wan mɛkanikal sil  bay wan intafɛreshɔn fit  bitwin di trɛd kres  ɛn di rut dɛn.

Aplikeshɔn dɛn na Paip Sistɛm ɛn Indastri Yuz

NPT trɛd dɛn de ɔlsay na prɛshɔn sistɛm dɛn . Dɛn kin yuz dɛn fɔ mek shɔ se dɛn gɛt lik-fri sil  insay:

l Fluid ɛn Gas Transfer : Paip dɛn we de kɛr wata, ɔyl, ɔ gas.

l Prɛshɔn Kalibreshɔn Sistɛm : Ikwipmɛnt we de mɛzhɔ prɛshɔn.

Indastri dɛn we de yuz NPT trɛd dɛn inklud:

l Fɔ mek tin dɛn

l Awtomotiv

l Erospɛs we de wok

Instɔlɛshɔn Tips, Bɛst Prɔsis, ɛn Kɔmɔn Yuz

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

1. Yuz PTFE Tep : Rap PTFE tep  (Teflon) rawnd di man trɛd fɔ mek di sil bɛtɛ.

2. Nɔ Tayt Ova : If yu tayt pasmak, i kin mek yu gɛt galling , usay di trɛd dɛn kin pwɛl.

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

Di tin dɛn we dɛn kin yuz bɔku tɛm na:

l Kɔnekt Paip : Lɛk insay yu os in plaba.

l Fitin : Lɛk ɛlb ɔ ti we de ɛp fɔ chenj di dairekshɔn fɔ di flɔ.

Advantej, Limiteshɔn, ɛn Difrɛns frɔm NPTF

Di bɛnifit dɛn we yu kin gɛt:

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

l Widely Accepted : NPT na di standad na bɔku industri dɛm.

Di tin dɛn we nɔ izi fɔ du:

l Risk fɔ Ɔva-Tayt : I pɔsibul fɔ pwɛl di trɛd dɛn.

l May Require Sealant : Sɔntɛnde, dɛn kin nid ɛkstra sialant fɔ mek shɔ se sial nɔ de lik.

Difrɛns frɔm NPTF:

l NPTF , ɔ Nashɔnal Paip Tɛpa Fiul , we dɛn kin kɔl bak Dryseal American National Standard Taper Pipe Thread , dɛn mek am fɔ mek i gɛt tayt sil we nɔ nid fɔ gɛt ɛkstra silin.

l NPTF trɛd dɛn  gɛt smɔl difrɛn dizayn we de alaw fɔ mek dɛn gɛt mɛkanikal kɔnɛkshɔn  we dɛn nɔ yuz PTFE tep  ɔ ɔda silin, nɔ lɛk NPT trɛd dɛn we kin nid dɛn bɔku tɛm.

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

 

NPTF (Nashɔnal Paip Taper Fiul) Trɛd dɛn

Ovaviu fɔ NPTF Thread Stɛndad ɛn Dizayn

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

Difrɛns Bitwin NPT ɛn NPTF

Pan ɔl we NPT ɛn NPTF trɛd dɛn tan lɛk, dɛn dizayn difrɛn . Dɛn mek NPT trɛd dɛn ɔnda ANSI/ASME B1.20.1 , ɛn dɛn kin nid PTFE tep  ɔ ɔda silin fɔ mek shɔ se dɛn gɛt kɔnɛkshɔn we nɔ gɛt lik . Na di ɔda say, dɛn mek NPTF trɛd dɛn, we de fala ANSI B1.20.3 , fɔ mek dɛn mɛsh tayt ɛn fɔm wan sil we nɔ gɛt ɛkstra matirial. Dɛn kin ebul fɔ du dis bay we dɛn mek wan dizayn we de mek di trɛd kres  ɛn di rut dɛn  skwash togɛda, ɛn dis kin mek wan sil we nɔ de lik.

Aplikeshɔn dɛn na Fiul ɛn Gas, Achiv Lik-Fri Sil

In di wɔl fɔ fiul ɛn gas , NPTF trɛd na go-to choice. Dɛn mek dɛn fɔ mek wan sil we nɔ de lik  we rili impɔtant na prɛshɔn sistɛm dɛn . Dɛn sistɛm ya nɔ kin ebul fɔ pe fɔ lik, bikɔs ivin smɔl wan kin denja. NPTF trɛd dɛn de yuz insay prɛshɔn kalibreshɔn sistɛm  ɛn pat dɛn usay fɔ kip di klin ɛn intɛgriti fɔ di fluid ɔ gas impɔtant.

Yuz Sɛnɛri, Kɔmpatibiliti, ɛn Intachɛnjabiliti wit NPT

Bɔku tɛm dɛn kin si NPTF trɛd dɛn na aplikeshɔn usay i impɔtant fɔ mek dɛn gɛt sil we nɔ gɛt lik  , ɛn dɛn nɔ want ɛni silin. Bɔt pan ɔl we sɔm tɛm dɛn kin miks NPTF ɛn NPT trɛd dɛn, dis nɔ kin sef ɔ i kin wok ɔltɛm. NPTF trɛd dɛn kin skru insay NPT fitin, bɔt di rivays nɔ kin sial fayn bikɔs dɛn mek NPTF fɔ fit klos. I impɔtant fɔ chɛk kɔmpitibiliti bifo yu miks dɛn fɔ avɔyd tin dɛn lɛk galling  ɔ improper sial.

NPSM (Nashɔnal Paip Stret Mɛkanikal) Trɛd dɛn

Difinishɔn, Karakta, ɛn Besiks fɔ NPSM Trɛd

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

Ki pɔynt dɛn  bɔt NPSM trɛd dɛn: - Dɛn paralel , we min se di dayamita kɔnsistɛns. - NPSM trɛd dɛn nɔ de taper lɛk NPT  (National Pipe Tapered) trɛd dɛn. - Dɛn kin yuz dɛn fɔ mek mɛkanikal kɔnɛkshɔn . - Sial efyushɔn  de kɔmɔt frɔm gasket, nɔto di trɛd dɛnsɛf.

Aplikeshɔn dɛn na Haydrolik Sistɛm ɛn Ideal Yuz Kes dɛn

Bɔku tɛm dɛn kin si NPSM trɛd dɛn na haydrolik sistɛm  usay wan sil we nɔ gɛt lik  impɔtant. Dɛn kin wok fayn na prɛshɔn sistɛm  lɛk prɛshɔn kalibreshɔn sistɛm . Di Female Pipe Swivel  fittings na kɔmɔn wit NPSM threads, we de alaw fɔ izi fɔ instɔl na tayt ples.

Ideal yus kes dɛm  inklud: - Usay mɛkanikal sil  impɔtant pas trɛd sil. - Sistem dɛn we nid fɔ disassembly ɛn riassembly bɔku tɛm. - We yu de yuz gasket  ɔ O-ring  na in dɛn kin lɛk pas trɛd silin.

Kכmpεreshכn wit כda Trεd Tayp dεm, Intachεnjεbiliti 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 we yu de du. Fɔ transfa fluid ɛn gas , wan sil we nɔ gɛt  lik na di men tin. If yu de wok wit prɛshɔn sistɛm , BSPT  kin bi di we fɔ go. Fɔ aplikeshɔn dɛn we nid mɛkanikal sil  we nɔ gɛt silin, NPTF  na yu padi. Ɛn fɔ wan mɛkanikal kɔnɛkshɔn  we dɛn kin tek apat izi wan, NPSM  kin bi di bɛst tin fɔ pik.

Atikul FAQ Dɛm We De Adrɛs Praktikal Kɔnsyusɔn

l Wetin na gud silin? 

Bɔku tɛm dɛn kin yuz PTFE tep  (Teflon) wit NPT trɛd fɔ ɛp fɔ sidɔm.

l Aw tayt a fɔ skru dɛn? 

Go fɔ wan intafɛreshɔn fit —tayt so dat di trɛd kres  ɛn di rut dɛn  go prɛs togɛda, bɔt nɔto so tayt dat yu go pul di trɛd dɛn.

l Wetin bɔt angul dɛn? 

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

l A kin yuz dɛn fitin ya bak?

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

l Wetin yu go du if i lik?

 Chek fɔ si if i dɔn pwɛl ɔ tray fɔ yuz bonded ring sil  ɔ wan O-ring  fɔ gɛt ɛkstra layt fɔ protɛkshɔn.

Mɛmba se fɔ fit di rayt tin tan lɛk we yu 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 rod fɔ masta tred fitin  fɔ kɔnɛkshɔn we nɔ gɛt lik.

Dɔn

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

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

l NPTF , we dɛn kin kɔl bak Dryseal 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 Paip Stret Mɛkanikal , gɛt stret paip trɛd dɛn . I fayn fɔ mek mɛkanikal kɔnɛkshɔn  we dɛn kin tek apat ɛn put bak togɛda izi wan.

l BSPT , we shɔt fɔ British Standard Pipe Taper , tan lɛk NPT bɔt i gɛt difrɛn trɛd angle  ɛn pitch . I kɔmɔn na ples dɛn we de yuz British standad.

Mɛmba se 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 Teknɔlɔji ɛn Indastri Rikɔmɛndishɔn

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

l Sial efyushɔn  de kam bɛtɛ. Wi de fain we fɔ mek kɔnɛkshɔn we supa tayt we nɔ nid ɛkstra gasket  ɔ O-ring.

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

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