Dekodeli jiri fitininw: NPSM, NPTF, NPT, ani BSPT ɲɛfɔlen don .

Yala aw bɛ gɛlɛya sɔrɔ NPSM, NPTF, NPT, ani BSPT jiriw faamuyali la wa? Nin barokun bɛna aw bilasira nin jirisun ninnu faamuyali caman na, ka aw kalan u sigicogo la ka fara jateminɛ nafamaw kan.

sɛgɛsɛgɛli dafalen kɛra jiri suguyaw kan .

NPT (National Pipe Taper) Filaw .

ɲɛfɔli, jogo, ani dilancogo jɔnjɔnw .

NPT kɔrɔ ye jamana ka pipe tapered ye . O ye suguya dɔ ye jiri  min bɛ kɛ ka pipew ni fɛnw fara ɲɔgɔn kan. Aw ka kan ka min dɔn, o filɛ nin ye:

L Tapered Threads : NPT threads taper ni 1/16 inch hakɛ ye inch kelen na, o kɔrɔ ye ko u bɛ dɔgɔya ka taa a laban fan fɛ.

l Thread Standards : U bɛ tugu ANSI/ASME B1.20.1  sariya la.

L Fila angle : Filɛriw bɛ ni 60° flankɛ ye ..

l Sealing Efficiency : U bɛ sigilan masina dɔ da  ni ɲɔgɔndan ye min bɛ bɛn  cɛ . jirikurunw  ni jirisunw .

Aplikasi minnu bɛ sɔrɔ pibilikiw ni iziniw kɔnɔ .

NPT jiriw bɛ yɔrɔ bɛɛ degunko siratigɛ la . U bɛ kɛ walasa ka sigilan dɔ sɔrɔ min tɛ bɔgɔ ye  , o bɛ sɔrɔ:

l ji ni gazi jiginni : pibiliki minnu bɛ ji, tulu walima gazi ta.

l tansiyɔn jateminɛcogo : minɛn minnu bɛ degun suman.

Industries minnu bɛ baara kɛ ni NPT jiriw ye olu dɔw ye:

L ka baara kɛcogo .

L Mobili .

L Aerospace .

A sigicogo ladilikanw, a kɛcogo ɲumanw, ani a baarakɛcogo minnu bɛ kɛ tuma bɛɛ .

Ni aw bɛ NPT jiriw sigi, aw bɛ nin wale ɲumanw kɛ:

1. Aw bɛ PTFE tape kɛ : Aw bɛ PTFE tape  (teflon) siri cɛ juru la walasa ka sigilan ɲɛ.

2. Aw kana a siri ka tɛmɛ a dan kan : TIGƐLƐ ƝƐNABƆLI bɛ se ka kɛ sababu ye ka galling kɛ , yɔrɔ min na jiriw bɛ tiɲɛ.

3. Aw bɛ a lajɛ ni a bɛ bɔ : Aw bɛ a lajɛ tuma bɛɛ ni fɛnw bɛ bɔ ɲɔgɔn na.

Baara minnu bɛ kɛ tuma caman na, olu dɔw ye:

l Pipew minnu bɛ ɲɔgɔn sɔrɔ : I n’a fɔ i ka so kɔnɔ pɔmpi.

L Fittings : I n’a fɔ kɔkiliw walima tee minnu bɛ dɛmɛ ka jibɔ sira Changer.

Nafa minnu bɛ sɔrɔ, dantigɛliw, ani danfara minnu bɛ NPTF la .

Nafaw:

l Leak-free connection : U dabɔra ka sigilan sirilen dɔ dilan.

L A ka ca a la : NPT ye sariya ye min bɛ sɔrɔ izini caman na.

Dantigɛliw:

l Farati min bɛ a la ka tɛmɛ a dan kan : A bɛ se ka kɛ ka jiriw tiɲɛ.

L bɛ se ka kɛ sigilan ye : tuma dɔw la, sigilan wɛrɛ ka kan ka sɔrɔ walasa ka sigilan sɔrɔ min tɛ fɛn bɔ.

Danfara minnu bɛ NPTF ni ɲɔgɔn cɛ:

L NPTF , walima National Pipe Taper Fuel , n’a bɛ fɔ fana ko DrySeal American National Standard Taper Pipe Thread , o dilannen don walasa ka sigilan gɛlɛn di a ma, k’a sɔrɔ a mago tɛ sigilan wɛrɛ la.

L NPTF jiriw  ka dilancogo tɛ kelen ye dɔɔnin min bɛ se ka kɛ sababu ye ka mekanikini kɛ ni  tɛ , a tɛ i n’a fɔ NPT jiriw minnu ka teli ka u wajibiya. PTFE tape  walima sealant wɛrɛw

Aw ye aw hakili to a la ko NPT ye dɔ dilanni ye pipe thread jɛgɛnsira  min bɛ se ka da a kan ani min bɛ baara kɛ kosɛbɛ. I mana baara kɛ ni mobili ye walima ni i bɛ ka fɛn dɔ labɛn so kɔnɔ, ni i ye NPT jiriw dɔn, o b’i dɛmɛ ka ɲɔgɔndan ɲumanw kɛ.

 

NPTF (National Pipe Taper Fuel) Filaw .

NPTF Thread Standards ani a dilanni bɛɛ lajɛlen .

NPTF jiriw, minnu bɛ wele fana ko DrySeal American National Standard Taper Pipe Thread , olu bɛ tugu ANSI B1.20.3  sariyaw kɔ. Nin jirisun ninnu ni NPT bɔlen don ɲɔgɔn fɛ nka u dabɔra sigilan ɲuman kama. NPTF jiriw bɛ ni 60° flank angle ye  ani u bɛ seal mechanique dilan  ka tɛmɛn interference fit fɛ  jiriw crsts ni roots cɛ. O kɔrɔ ye ko jiriw bɛ ɲɔgɔn sɔgɔ ka kɛ sigilan sirilen ye k’a sɔrɔ u mago tɛ sigilan wɛrɛw la.

Danfara minnu bɛ NPT ni NPTF cɛ .

Hali ni NPT ni NPTF jiriw bɛ ɲɔgɔn na, u dilanni tɛ kelen ye . NPT jiriw dilannen don ANSI/ASME B1.20.1 kɔnɔ , wa u bɛ se ka kɛ PTFE tape  walima sigilan wɛrɛw ye walasa ka a jira ko ɲɔgɔndan tɛ sɔrɔ . Faan wɛrɛ fɛ, NPTF jiriw, ANSI B1.20.3 kɔfɛ , olu bɛ dilan ka u siri ka ɲɛ ani ka sigilan dɔ dilan ni fɛn wɛrɛw tɛ u la. U bɛ o Sɔrɔ ni dilan ye min bɛ sira Di jirikurunw  ni jirisunw  ma u ka squash ɲɔgɔn na, ka sigilan dɔ Dabɔ min tɛ 'fɛn ye ..

A bɛ kɛ sɛnɛfɛnw ni gazi la, ka se ka sigilanw sɔrɔ minnu tɛ bɔgɔ bɔ .

Diɲɛ kɔnɔ fɛnɲɛnamafagalanw ni gazi , NPTF jiriw ye taa-ka-segin sugandili ye. u dabɔra ka sigilan dɔ dilan min tɛ fɛn bɔ min bɛ se ka wuli ka bɔ a nɔ na  min nafa ka bon degunko siratigɛ la . O fɛɛrɛ ninnu tɛ se ka bɔgɔ bɔ, bawo hali fitinin bɛ se ka kɛ farati ye. NPTF jiriw bɛ kɛ degun jateminɛ fɛɛrɛw la  ani yɔrɔ minnu na ji walima gazi saniyalen ni dafalen marali nafa ka bon kosɛbɛ.

Baarakɛcogo misaliw, bɛnkanw, ani ɲɔgɔnfaamu ni NPT .

NPTF jiriw bɛ sɔrɔ tuma caman na baarakɛyɔrɔw la, yɔrɔ minnu na, sigilan min tɛ fɛn bɔ  , o nafa ka bon, wa sigilan si tɛ ɲini. Nka, hali ni NPTF ni NPT jiriw bɛ se ka ɲagami tuma dɔw la, o tɛ kɛ tuma bɛɛ lakana walima nafama ye. NPTF jiriw bɛ se ka siri ka kɛ NPT fitininw ye, nka a kɔfɛla bɛ se ka kɛ a tɛ datugu ka ɲɛ bawo NPTF dabɔra walasa a ka se ka don a la kosɛbɛ. A nafa ka bon ka bɛnkanw lajɛ sani aw ka u ɲagami walasa ka aw tanga ko dɔw ma i n’a fɔ ka u datugu  walima ka u datugu cogo bɛnbali la.

NPSM (National Pipe Straight Mechanical) Filaw .

NPSM jiriw ɲɛfɔli, u jogo, ani u jɔnjɔnw .

NPSM jiriw ye suguya dɔ ye pipe tilennenw . U bɛ tugu ANSI/ASME B1.20.1  sariyaw kɔ. O jirisunw dilannen don masinw ka ɲɔgɔndan kama  sanni u ka kɛ sigilan ye. U bɛ ni 60° flank angle ye  wa u dabɔra ka baara kɛ ni gasi  walima O-ring ye  walasa ka ɲɔgɔndan dɔ dilan min tɛ fɛn ye ..

Point keys  about NPSM threads: - U ye parallèle ye , o kɔrɔ ye ko a cɛmancɛ bɛ bɛn. - NPSM jiriw tɛ taper i n'a fɔ NPT  (National Pipe Tapered) jiriw. - u bɛ kɛ ka masinw jɛgɛn . - Sealing efficiency  bɛ bɔ gaziw la, a tɛ kɛ jirisunw yɛrɛ ye.

A bɛ kɛ ka baara kɛ ni ji ye ani baarakɛcogo ɲumanw .

NPSM jiriw bɛ sɔrɔ tuma caman na jibolisiraw la,  yɔrɔ minnu na, sigilan min tɛ fɛn bɔ,  o nafa ka bon kosɛbɛ. u bɛ baara kɛ ka ɲɛ degunko siratigɛ la  i n' a fɔ degun jateminɛcogo . Muso pipe swivel  fittings bɛ sɔrɔ NPSM jiriw la, o bɛ sira di a sigili nɔgɔya ma yɔrɔ gɛlɛnw na.

Baarakɛcogo ɲumanw  ye ninnu ye : - yɔrɔ min na, masina sigilan  nafa ka bon ka tɛmɛ jiribolo sigilan kan. - Sitimɛ minnu bɛ to ka wuli ka bɔ u nɔ na ani ka u lajɛ kokura. - Ni aw bɛ baara kɛ ni gazi  walima O-ring ye  , o de ka fisa ni jiri sirilan ye ..

Aw bɛ a suma ni jiri suguya wɛrɛw ye, ɲɔgɔn falen-falen ni NPTF ye .

NPSM bɛ se ka ɲagami tuma dɔw la ni NPTF  (National Pipe Taper Fuel) ye, a bɛ fɔ fana ko DrySeal American National Standard Taper Pipe Thread . U bɛ ɲɔgɔn sanga cogo min na, o filɛ nin ye:

L NPTF  jiriw dilannen don walasa ka sigilan di min tɛ fɛn ye,  k’a sɔrɔ a ma kɛ ni sigilan wɛrɛw ye. U bɛ ' dantigɛli-minɛn dɔ Dabɔ  cɛ . jiri-kuruw  ni jiri-yɔrɔw .

L NPSM  jiriw bɛ gasi  walima O-ring de wajibiya  walasa ka a jira ko ɲɔgɔndan bɛ kɛ ni bɔgɔ ye ..

L NPSM tɛ se ka ɲɔgɔn falen ni NPTF  walima NPT ye  ka da a kan, a bɛ se ka kɛ ko jiri sariyaw tɛ kelen ye.

Siginidenw ka baarakɛcogo ɲuman ani izini baarakɛcogo .

NPSM jiriw nafa ka bon u ka sigili nafama na  ni u bɛ baara kɛ ni masina sigilan ɲuman ye . U bɛ baara kɛ kosɛbɛ: - ji ni gazi jiginni  baarakɛcogo la. - iziniw minnu mago bɛ masin jɛɲɔgɔnya la min bɛ se ka da u kan ..

Industriw ka baarakɛcogo  dɔw ye : - Ji ni jiko jugu furakɛli. - Pneumatic Systems. - tulumafɛnw.

BSPT (British Standard Pipe Taper) Filaw .

BSPT Thread Standards daminɛ .

n' an bɛ kuma BSPT jiriw kan , an bɛ ka an yɛrɛ su jibolisiraw ni ɲɔgɔndanw na minnu nafa ka bon ji ni gazi jiginni na . BSPT kɔrɔ ye tubabukan na , a bɛ fɔ ko pipe taper standard . o ye suguya dɔ ye jiri  min bɛ kɛ ka sigilan kɛ min tɛ fɛn bɔ . Nin sariya in bɛ fɔ sɛbɛnw kɔnɔ i n’a fɔ BS 21  ani ISO 7 ..

Fɛn minnu bɛ danfara don u ni ɲɔgɔn cɛ ani ka ɲɔgɔn sanga ni NPT ni NPTF ye .

BSPT jiriw ye fɛn ye min ɲɔgɔn tɛ. U bɛ ni 60° flank angle ye  wa u bɛ tapered (taama) Kɛ, o kɔrɔ ye ko u bɛ Dɔgɔya ni u bɛ Taa ‘ɲɛ. O tɛ kelen ye ni NPT jiriw ye , minnu fana bɛ sɛgɛn nka u bɛ ni 60° jiri ye Ameriki, i n’a fɔ a ɲɛfɔlen don cogo min na ANSI/ASME B1.20.1 fɛ..

Sisan, an ka BSPT ni NPTF suma ɲɔgɔn na . NPTF, walima National Pipe Taper Fuel , min bɛ fɔ a ma tuma caman ko DrySeal American National Standard Taper Pipe Thread , i n’a fɔ ANSI B1.20.3 , o bɛ dilan ka ɲɛ ka tɛmɛ NPT kan. a bɛ o sɔrɔ ni ɲɔgɔndan fitinin dɔ dabɔli  cɛ ye jirikurunw  ni jiribuluw . BSPT tɛ a jigi da nin fitinin in kan sigili kama. O nɔ na, ​​a bɛ se ka kɛ ko a mago bɛ jiri sirilan na  i n’a fɔ PTFE tape (Teflon)  walima gazi min  bɛ kɛ ka fɛnw bɔ.

BSPT ka diɲɛ kɔnɔ ani diɲɛ kɔnɔ baarakɛminɛnw .

BSPT jiriw bɛ baara kɛ kosɛbɛ Ameriki kɔkan, kɛrɛnkɛrɛnnenya la jamanaw kɔnɔ minnu bɛ tugu tubabu ka ɛntɛrinɛti sariyaw kɔ. u bɛ ye tuma caman na degunw  ni tansiyɔn jateminɛcogo la . U ka se ka dilan, masin-sigilan  o b’a to u bɛnnen don diɲɛ kɔnɔ baara caman ma.

Analysis (sɛgɛsɛgɛli) ni ɲɔgɔn cɛ ni jiri suguya wɛrɛw ye .

N’an ye BSPT lajɛ jiri suguya wɛrɛw kɛrɛfɛ i n’a fɔ NPSM (National Pipe Straight Mechanical)  ani BSPP (British Standard Parallel Pipe) , an b’a ye ko BSPT ye ɲɔgɔndan ye min tɛ fɛn ye  , n’o ye jiribuluw ye minnu tɛ bɔgɔ ye, k’a sɔrɔ NPSM ni BSPP ye pipe tilennenw ye BSPT jiriw bɛ ɲɔgɔndan masina kɛ  k’a sɔrɔ u mago tɛ sirilan sirilan  walima O-ring na , a tɛ i n’a fɔ BSPP min bɛ se ka kɛ ko ninnu mago bɛ se ka kɛ sigilan ye.

 

BSPT jiriw ka ɲi kosɛbɛ kow la, i mago bɛ sigilan gɛlɛn na, min tɛ fɛn bɔ,  ni dasiri fɛɛrɛ wɛrɛw ka gɛlɛn. U baara ka nɔgɔn ka tɛmɛ NPTF jiriw kan , minnu bɛ degun jateminɛ tigitigi de wajibiya  walasa ka u yɛrɛ tanga ko dɔw ma i n’a fɔ galari  walima tiɲɛni minnu bɛ bɔ a sirili kojugu la.

Tekniki fɛnw ni sariyaw .

Sumanikɛlanw, jirisunw jatew, ani ANSI sariyaw .

N’an bɛ kuma jirisunw ka fɛnw kan  i n’a fɔ NPSM, NPTF, NPT, ani BSPT, o bɛɛ bɛ tali kɛ u bɛ pipew siri ɲɔgɔn na ani ka u datugu cogo min na. Nin dilan sariyaw  b’an dɛmɛ ka da a la ko fɛnw bɛ bɛn ɲɔgɔn ma ka ɲɛ. Miiri k’a filɛ i n’a fɔ LEGO blokiw – u ka kan ka bɛn ɲɔgɔn ma cogo dafalen na walasa ka nɔrɔ ɲɔgɔn na.

L NPSM  ni NPw  bɛ ni jiri tilennenw ye, o kɔrɔ ye ko u tɛ gɛlɛya ka taa a fɛ ni u bɛ screw don.

L NPT , NPTF , ani BSPT  bɛ kɛ ni sɛgɛn ye. O kɔrɔ ye ko u bɛ gɛlɛya, u bɛ i n’a fɔ funteni, o bɛ dɛmɛ ka bɔgɔbɔli dabila.

Ameriki jamana sariyasunba (ANSI)  bɛ sariyaw sigi nin dilan ninnu kan Ameriki misali la, ANSI/ASME B1.20.1  ye NPT jiriw ta ye. U b’a Fɔ an ye ko jirisunw ka kan ka bonya cogo min na, u hakɛ bɛ Kɛ santimɛtɛrɛ kelen na (o ye jiri jate ye), ani u mago bɛ cogo min na.

fɛnw, fɛn dilanni sariyaw, ani sariya labatoli .

Fɛnw nafa ka bon kosɛbɛ. Fɛn minnu bɛ don a kɔnɔ, olu fanba ye nɛgɛ ye, i n’a fɔ nɛgɛ walima nɛgɛ, bawo u barika ka bon. O yɔrɔw dilanni bɛ sariya gɛlɛnw labato walasa u ka lafiya ani u bɛna mɛn. Nin bɛ tali kɛ sariya labatoli la  – i n’a fɔ ka tugu furakɛcogo la walasa ka gato dafalen tobi waati bɛɛ.

l ANSI B1.20.3  ani AS 1722.1  ye sariya dɔw ye minnu bɛ jiriw dilanni ɲɛminɛ degunko siratigɛ la ..

l Angletɛri jamana na, u bɛ BS 21  ani ISO 7  kɛ BSPT  ni BSPP  jiriw la.

Dilanbagaw fana ka kan k’a lajɛ k’u ka jiriw bɛ se ka degun min kɛ, u ka kan ka min kɛ, k’a sɔrɔ u ma bɔ walima ka kari. O yɔrɔ de la, jogoɲini  bɛ don.

Faamuyali jiriw hakɛw, muɲuliw, ani jogoɲumanya sabatili .

Fila hakɛw ye pitch ye  (aw ni jiriw cɛ janya ye) ani angle .  jiriw ka Misali la, BSPT jiriw bɛ ni 60° flank angle ye , o ye fɛn dɔ ye min b’a to u bɛ kɛ fɛn kelen ye.

l muɲuli  ye danfara misɛnninw ye minnu bɛ se ka kɛ jirisunw bonya n’u cogoya la. U bɛ i n’a fɔ wiggle room in fitting pieces together.

l Jogoɲumanya  kɔrɔ ye ka a yɔrɔ bɛɛ lajɛ walasa a ka se ka sariyaw labato. A bɛ iko karamɔgɔ bɛ i ka degeliw jateminɛ walasa ka da a la ko i ye jaabiw sɔrɔ ka ɲɛ.

Walasa ka sigilan sɔrɔ min tɛ fɛn bɔ , yɔrɔ dɔw i n’a fɔ PTFE tape (teflon) , gaskets , walima O-rings  bɛ se ka kɛ ni nin jiri ninnu ye. Filɛlikɛlanw  i n’a fɔ NPT  ani BSPT  bɛ se ka sigi u yɛrɛ la tuma caman na k’a sababu kɛ u cogoya ye – u bɛ gɛlɛya ka taa a fɛ ka taa a fɛ ni u bɛ siri.

Tiɲɛw teliya la:

L NPT  jiriw dilannen don walasa ka kɛ ɲɔgɔndan fitinin ye , o kɔrɔ ye ko u bɛ kɛ masin sigilan ye  ni u bɛ ɲɔgɔn sɔgɔ.

L NPSM jiriw  bɛ baara kɛ ni muso pipe swivel ye  – nut sugu dɔ min b’a to i bɛ se k’a siri k’a sɔrɔ i ma pipe bɛɛ tigɛli kɛ.

L NPTF jiriw  bɛ wele tuma dɔw la ko DrySeal American National Standard Taper Pipe Thread  bawo u dabɔra ka sigi ka sɔrɔ u mago tɛ fɛn wɛrɛw la i n’a fɔ kase walima paste.

Baarakɛcogo ɲumanw ani sɛgɛsɛgɛli kɛcogo ɲumanw .

Diɲɛ kɔnɔ baarakɛcogo lakikaw ani ko kɛlenw sɛgɛsɛgɛli jiri suguya wɛrɛw kan .

Ni a bɛ fɔ jiri-fitiniw ma minnu  bɛ kɛ degun-sɛnɛ na , a ɲɛfɔli bɛ nafa sɔrɔ. An k'a lajɛ nin jirisun ninnu bɛ baara kɛ cogo min na diɲɛ yɛrɛ kɔnɔ.

NPT jiriw  bɛ sɔrɔ tuma caman na iziniw bɛɛ kɔnɔ. Misali la, tansiyɔn jateminɛcogo dilanko tɔnba dɔ  bɛ se ka baara kɛ ni NPT fitininw ye k’a sababu kɛ u bɛ bɛn ni minɛn suguya caman ye.

NPTF jiriw , n’a bɛ fɔ fana ko DrySeal American National Standard Taper Pipe Thread , olu dilannen don sigilan na min lakananen don kosɛbɛ, min tɛ fɛn bɔ, k’a sɔrɔ a mago tɛ jirisun sigilan wɛrɛ la U bɛ Kɛ baarakɛminɛnw na minnu na masin-sigilan  nafa ka bon kosɛbɛ, i n’a fɔ fɛnɲɛnamafagalanw dicogo minɛnw na.

NPSM jiriw , walima jamana ka pipe straight mechanical , olu bɛ kɛ ni muso pipe swivel ye cogoya la . Kalan dɔ bɛ se ka kɛ ni jibolisira ye min kɔnɔ NPSM fɛnw bɛ se ka ɲɔgɔn lajɛ nɔgɔya la ani ka u ladon.

BSPT jiriw , n’u ka 60° flank angle , olu bɛ sɔrɔ diɲɛ kɔnɔ. U bɛ sugandi tuma caman na u ka sigili ɲuman na  ji ni gazi jiginni siraw la.

Sɛgɛsɛgɛli min bɛ kɛ ni ɲɔgɔn ye: NPT ni NPTF, NPSM ni NPT, BSPT ka jɔyɔrɔ kɛrɛnkɛrɛnnen .

An ka danfara tiɲɛ:

L NPT vs. NPTF : U fila bɛɛ bɛ ni pipe thread tapered ye , nka NPTF bɛ interference fit di  cɛ thread crests  ni thread roots , o bɛ kɛ sababu ye ka sealant mago bɔ.

L NPSM vs. NPT : NPSM bɛ ni pipe jiriw tilennenw ye  ani a bɛ gasi walima O-ring de wajibiya walasa ka jɛgɛnsira dɔ dilan min tɛ bɔgɔ bɔ . NPT ka jiribuluw bɛ kɛ sigilan ye jirisunw yɛrɛ fɛ.

L BSPT ka jɔyɔrɔ kɛrɛnkɛrɛnnen : BSPT jiriw bɛ tali kɛ NPT la nka u bɛ ni wɛrɛ ye jiribuluw  ni u fɔcogo , o b’a to u tɛ se ka ɲɔgɔn falen ni NPT fitininw ye.

dɔnnikɛlaw ka hakilinaw ani izini baarakɛlaw ka laadilikanw dilanw kan .

Industriw ka baarakɛlaw b’a fɔ ko aw ka PTFE tape (teflon)  walima bonde ring seal  ni NPT fittings kɛ walasa ka a jira ko sigilan min tɛ fɛn bɔ . NPTF fɛ, a nafa ka bon kosɛbɛ ka a jira ko jɛɲɔgɔnya ɲuman bɛ kɛ walasa ka nafa sɔrɔ a ka jalen  baara la.

Ni aw bɛ baara kɛ ni BSPT ɲɔgɔndanw ye , aw ye aw hakili to a la ko u tɛ bɛn NPT walima NPTF ma ni adaptɛri tɛ. Fɛn dɔnbagaw bɛ ladilikan di ka ɲɛsin jiri sariyaw ma  i n’a fɔ ANSI/ASME B1.20.1  NPT kama, ANSI B1.20.3  NPTF, walima ISO 7  ani BS 21  kama BSPT la walasa ka a labɛn ka ɲɛ.

Galling , walima thread tiɲɛni, o ye farati ye ni nin fɛnw ye minnu bɛ se ka kɛ. Walasa k’a bali, aw kana a siri ka tɛmɛ a dan kan abada ani a bɛ tugu degunw na tuma bɛɛ .

A sigili, a ladonni ani a kɛcogo ɲumanw .

Fɛɛrɛ ɲumanw ka ɲɛsin jiri suguya wɛrɛw sigili ma .

sigili sen kan NPSM , NPTF , NPT , walima BSPT fitininw  , a nafa ka bon ka laadilikan kɛrɛnkɛrɛnnenw labato walasa ka ɲɔgɔndan dɔ sɔrɔ min tɛ se ka bɔ kɛnɛ kan . Nin ye gafe teliya ye:

L NPT  ni NPTF : .

l Aw bɛ PTFE tape  walima jiri sirilan bɛnnen dɔ kɛ  cɛ juru la.

l Aw bɛ fitinin siri ni bolo ye, o kɔ aw bɛ baara kɛ ni fɛn ye min bɛ kɛ ka fɛn labanw kɛ.

l Aw bɛ aw janto aw kana a siri ka tɛmɛ, barisa o bɛ se ka jiriw tiɲɛ.

L BSPT : .

l A bɛ tali kɛ NPT la, aw bɛ PTFE tape  walima jiri sirilan kɛ ..

l Aw bɛ a siri ka ɲɛ walasa ka se ka sigilan dɔ sɔrɔ min bɛ kɛ ni masin ye ..

L NPSM : .

l Nin jiri ninnu dilannen don ka jɛ ni muso pipe swivel ye ..

l Aw bɛ baara kɛ ni gazi  walima O-ring ye  walasa ka a datugu.

l Aw kana a da kojugu, barisa a bɛ se ka tiɲɛni kɛ gazi la ..

Gɛlɛya minnu bɛ sɔrɔ u sigili la ani u bɛ se ka se sɔrɔ cogo min na .

l Cross-threading : A bɛ kɛ ni jiriw ma ɲɔgɔn sɔrɔ. Aw bɛ a daminɛ tuma bɛɛ ni bolo ye walasa a kana kɛ.

l galling : nɛgɛ ni nɛgɛ ɲɔgɔn sɔrɔli bɛ se ka kɛ sababu ye ka nin kɛ. Aw bɛ tulu kɛ a la walasa ka aw tanga a ma.

L Over-Tightening : A bɛ se ka kɛ sababu ye ka jiri tiɲɛ. Aw bɛ labato tansiyɔn jateminɛcogo sariyaw  walasa ka girinya hakɛ bɛnnen sɔrɔ.

l Leakage : Ni bɔgɔjiw kɛra, aw bɛ a lajɛ ni a ma wuli ka bɔ a nɔ na  ani ka a lajɛ ni a bɛ se ka baara kɛ ka ɲɛ ..

Ladonni, gɛlɛyaw ɲɛnabɔli, ani ka ɲɛsin jiriw labɛncogo jan ma .

l Aw bɛ to ka sɛgɛsɛgɛli kɛ : aw bɛ a lajɛ ni a sɛgɛnnen don, ni a bɛ sɔgɔsɔgɔ, walima ni a tiɲɛna.

l Saniya : Aw bɛ jiriw saniya. Nɔgɔ bɛ se ka kɛ sababu ye ka bɔgɔ bɔ.

l Sealant (Sealant) tali kokura : Waati tɛmɛnen kɔfɛ, sigilanw bɛ se ka tiɲɛ. Aw bɛ segin a kan ni a mago bɛ a la.

l A maracogo ɲuman : Aw bɛ fɛnw mara yɔrɔ jalen ni yɔrɔ saniyalen na.

Ka hakilina jigi :

L  NPT  ni NPTF  jiriw bɛ sigilan dɔ dilan ni ɲɔgɔndan ye min bɛ bɛn  cɛ . jiriw  ni jirisunw .

L  BSPT  Filaw bɛ siri ni jiriw dɔrɔn ye, ni 60° flank angle  bɛ dɛmɛ don sigili nafama na.

L  NPSM  jiriw bɛ u jigi da masinw ka ɲɔgɔndan kan , a ka c’a la , a bɛ bonya ni gazi  walima O-ring ye ..

FAQw bɛ dilanw kan .

Danfaraba minnu bɛ NPSM, NPTF, NPT, ani BSPT fila cɛ .

Ni a bɛ fɔ thread fittings , a bɛ i n'a fɔ puzzle. O yɔrɔ kelen-kelen bɛɛ bɛ bɛn cogo dɔ ma. NPSM  (National Pipe Straight Mechanical) Filaw tilennen don ani u dilannen don masinw ka jogindaw kama minnu bɛ bɛn u yɛrɛ ma. NPT  (National Pipe Tapered) Filaw bɛ kɛ ni sɛgɛn ye ani u bɛ sigilan sirilen kɛ ni u bɛ don ɲɔgɔn na ka juguya i n’a fɔ u bɛ siri cogo min na NPTF  (National Pipe Taper Fuel), n’a bɛ fɔ fana ko DrySeal American National Standard Taper Pipe Thread , o bɛ tali kɛ NPT la nka a dabɔra sigilan ɲuman kama k’a sɔrɔ a mago tɛ sigilan wɛrɛ la. BSPT  (British Standard Pipe Taper) Filaw, fan dɔ fɛ, olu bɛ kɛ ka sigilan sirilenw dilan degunw na ani u bɛ kɛ ni 55° flank angle ye, o tɛ kelen ye ni 60° angle ye min bɛ kɛ NPT jiriw la.

ɲɔgɔn falen-falen, ɲɔgɔndan minnu tɛ kɛ ni bɔgɔ ye, ani filiw minnu bɛ kɛ tuma caman na .

Sisan, yala i bɛ se k’u ɲagami wa? A tɛ tiɲɛ ye. ɲɔgɔn falen-falen  tɛ tulon ye i b'a fɛ ka min Kɛ ni thread fittings ye. Baara kɛli ni NPT ye  ni NPTF ye  , o bɛ se ka baara kɛ tuma dɔw la, nka a tɛ garanti ye ko a bɛ se ka kɛ ɲɔgɔndan ye min tɛ fɛn tiɲɛ . ani BSPT ? O ye maana wɛrɛ ye k’a sababu kɛ a ka jiribuluw ni a ka fɔcogo ɲɔgɔn tɛ. O fili min ka ca ni tɔw bɛɛ ye? Ni an y’a miiri k’u bɛɛ bɛ bɛn ɲɔgɔn ma. Aw bɛ sariyaw lajɛ tuma bɛɛ, i n’a fɔ ANSI/ASME B1.20.1  NPT la, walasa ka aw tanga fɛnw bɔli ma walima ka u tiɲɛ.

Ka jiri suguya ɲuman dɔn baara kɛrɛnkɛrɛnnenw kama .

O la sa, i bɛ se ka min ɲuman ta? Miiri baara la. kama Ji ni gazi jiginni , sigilan min tɛ fɛn bɔ  , o ye fɛnba ye. Ni aw bɛ baara kɛ ni pressure systems ye , BSPT  bɛ se ka kɛ sira ye. Baara minnu mago bɛ masin sigilan na  ni sigilan tɛ, NPTF  ye aw teri ye. Wa walasa ka ɲɔgɔndan kɛ ni masin ye  min bɛ se ka bɔ ɲɔgɔn na nɔgɔya la, NPSM  bɛ se ka kɛ sugandili ɲuman ye.

FAQ minnu bɛ haminankow ɲɛnabɔ .

L Sealant ɲuman ye mun ye? 

PTFE tape  (Teflon) bɛ kɛ ka caya ni NPT jiriw ye walasa ka dɛmɛ don ka a datugu.

l Ne ka kan ka u siri cogo di? 

Aw bɛ taa interference fit kɛ —tight enough so the thread crests  and roots  pressed together, nka a kana siri kosɛbɛ fo ka jiriw bɔ u la.

l Angles (angles) dun? 

Aw ye aw hakili to a la ko NPT  ni NPTF  bɛ ni 60° flank angle ye , ani BSPT  bɛ ni 55° ye ..

l Yala ne bɛ se ka baara kɛ ni nin fitininw ye kokura wa?

 Tuma dɔw la, nka aw bɛ aw janto galon na —ni jiriw bɛ sɛgɛn ani ka u bɔ ɲɔgɔn na.

l Ni a bɛ bɔn?

 Aw bɛ a lajɛ ni a tiɲɛna walima aw bɛ a lajɛ ni sirilan sirilan  walima ni o-ring ye  walasa ka a tanga.

Aw ye aw hakili to a la ko ni aw ye fitinin ɲuman sɔrɔ, o bɛ i n’a fɔ ka baarakɛminɛn ɲuman sugandi baara kama. A bɛɛ ye kunnafoni kunbabaw de ye. Aw ye nin laadilikan ninnu to aw hakili la, ani aw bɛna sira kan ka se ka jiriw labɛn ka ɲɛ  walasa ka ɲɔgɔndanw sɔrɔ minnu tɛ bɔ ..

Kuncɛli

N’an bɛ kuma jirisunw labɛncogo kan  i n’a fɔ NPSM , NPTF , NPT , ani BSPT , an bɛ kuma yɔrɔw kan minnu b’an dɛmɛ ka pipew ni hosew fara ɲɔgɔn kan. O fitininw bɛ a to an ka ji, gazi ani fɛn wɛrɛw ka tɛmɛ pibilikiw fɛ k’a sɔrɔ u ma bɔ. An ye min kalan, o filɛ nin ye:

L NPT ye  suguya dɔ ye jiri  min bɛ baara kɛ kosɛbɛ USA. A bɛ fitinɛ siri kosɛbɛ bawo jiriw bɛ dɔgɔya a dakun kelen na, a suguya bɛ i n’a fɔ kon.

L NPTF , n’a bɛ fɔ fana ko DrySeal American National Standard Taper Pipe Thread , o bɛ i n’a fɔ NPT nka a dilannen don walasa ka sigilan dɔ dilan min ka gɛlɛn hali  ni a tɛ fɛn wɛrɛ kɛ a la k’a sɔrɔ a mago tɛ fɛn wɛrɛw la i n’a fɔ PTFE tape ..

L NPSM , walima jamana ka pipe straight mechanical , bɛ ni pipe jiriw tilennenw ye . A ka ɲi ka masin jɛgɛnsira dilan  min bɛ se ka bɔ ɲɔgɔn na ka segin ka bila ɲɔgɔn na nɔgɔya la.

l BSPT , n' o ye tubabu ka pipe taper standard ye , o ni NPT bɛ tali kɛ ɲɔgɔn na nka a bɛ kɛ ni jiribuluw ye  ani a fɔcogo tɛ kelen ye . A ka ca yɔrɔw la minnu bɛ baara kɛ ni tubabu ka sariyaw ye.

Aw ye aw hakili to a la, ka bɛn ka ɲɛ, o kɔrɔ ye ka aw ka dilan sariyaw dɔn  ani ka suguya ɲuman sugandi aw ka degunw kama ..

Fɛn nataw bɛ kɛ ka ɲɛsin jiriw ma minnu bɛ se ka kɛ sababu ye ka fɛɛrɛw ni iziniw ka ladilikanw di .

Diɲɛ kɔnɔ, jirisunw  bɛ to ka ɲɔgɔn Changer. Nin ye min ye horizon kan:

l Sealing efficiency  bɛ ka ɲɛ. An bɛ fɛɛrɛw sɔrɔ ka jɛɲɔgɔnyaw kɛ minnu bɛ super tight sɔrɔ k'a sɔrɔ an mago bɛ gazi wɛrɛw la  walima O-rings ..

l Fɛnw  bɛ ka ɲɛtaa sɔrɔ, olu fana. O kɔrɔ ye ko fitininw bɛ se ka degun caman minɛ ani ka mɛn.

l Dɔnniyakɛlaw b’a fɔ ko aw ka tugu iziniw ka ladilikanw kɔ tuma bɛɛ , i n’a fɔ ANSI/ASME B1.20.1  ka baara kɛ ni NPT walima ISO 7 ye  BSPT kama, walasa ka a dɔn ko fɛn bɛɛ bɛ bɛn cogo bɛnnen na.