![NPSM kple NPTF kple NPT kpakple BSPT .]()
Ðe NPSM, NPTF, NPT, kple BSPT ƒe ka siwo wotsɔna ƒoa ka na ame la gɔmesese ɖe fu na wòa? Nyati sia afia mɔ wò to nya siawo gɔmesese tsitotsito me, eye wòafia alesi nàde woe kpe ɖe nu vevi siwo ŋu nàbu ŋu.
Ka ƒomeviwo me dzodzro tsitotsito .
NPT (Dukɔa ƒe Pipe Taper) Kawo .
![NPT ƒe ka .]()
Gɔmesese, nɔnɔmewo, kple aɖaŋuwɔwɔ ƒe gɔmedzenufiafiawo .
NPT tsi tre ɖi na dukɔa ƒe pɔmpiwo ƒe taɖawo . Enye ka ƒomevi aɖe si wotsɔna ƒoa ka kple pɔmpiwo kple nusiwo wotsɔna ƒoa nui. Nusi wòle be nànyae nye esi:
l Tapered threads : NPT threads taper le rate si nye inch 1/16 le inch ɖeka me, si fia be wozua kpuie wu le nuwuwu lɔƒo.
l Thread ƒe dzidzenuwo : Wodzea ANSI/ASME B1.20.1 ƒe dzidzenu dzi.
l ka ƒe dzogoe : kaawo ƒe axa si ƒe didime nye 60° ..
l Nutrenu ƒe dɔwɔwɔ nyuie : Wowɔa mɔ̃ ƒe nutrenu to nusiwo doa dome . kplamatse ka ƒe ta kple kewo .
Dɔwɔwɔwo le pɔmpiwo ƒe ɖoɖowo kple dɔwɔƒewo zazã me .
NPT kawo le afisiafi le nyaƒoɖeamenu ƒe ɖoɖowo me . Wozãa wo tsɔ kpɔa egbɔ be nutrenu si me tsi mele o le:
l Fluid and gas transfer : pɔmpi siwo tsɔa tsi, ami, alo gas.
l Nyaƒoɖeamenu ƒe dzidzedzekpɔkpɔ ƒe ɖoɖowo : Dɔwɔnu siwo dzidzea nyaƒoɖeamenu.
Dɔwɔƒe siwo zãa NPT kaawo dometɔ aɖewoe nye:
l nuwo wɔwɔ .
l Ʋuwɔƒe .
L Yamenutome .
Aɖaŋuɖoɖowo, nu nyuitɔ kekeake siwo woawɔ, kple wo zazã zi geɖe .
Ne èle NPT Threads dem la, wɔ ɖe mɔnu nyuitɔ siawo dzi:
1. Zã PTFE Tape : Wra PTFE Tape (Teflon) ƒo xlã ŋutsu ƒe ka la be nutrenua nanyo ɖe edzi.
2. Don’t over-tighten : sesẽ si gbɔ eme ate ŋu ana galling nado , afisi kaawo gblẽ le.
3. Kpɔe ɖa be tsi le dodom hã : Do kadodoa kpɔ ɣesiaɣi be tsi le dodom hã.
Zãnu siwo wozãna zi geɖe dometɔ aɖewoe nye:
l Pɔmpiwo ƒe kadodo : Abe le wò aƒe ƒe pɔmpiwo me ene.
l Fittings : Abe abɔta alo tees siwo kpena ɖe ame ŋu wòtrɔa sisi ƒe mɔfiame ene.
Viɖewo, seɖoƒewo, kple vovototo siwo le NPTF me .
Viɖe siwo le eŋu:
l Leak-free connection : Wotrɔ asi le wo ŋu be woawɔ nutrenu sesẽ aɖe.
l Ame geɖe xɔe : NPT ye nye dzidzenu le dɔwɔƒe geɖe me.
Seɖoƒewo:
l Afɔku si nye be woawɔ nu wòagbɔ eme : Ate ŋu adzɔ be woagblẽ nu le kaawo ŋu.
l ate ŋu abia nutrenu : Ɣeaɖewoɣi la, wohiãa nutrenu bubu be woakpɔ egbɔ be nutrenu si me tsi mele o.
Vovototo siwo le NPTF me:
L NPTF , alo National Pipe Taper Fuel , si woyɔna hã be Dryseal American National Standard Taper Pipe Thread , nye esi wowɔ be wòana nutrenu si le sesẽm wu evɔ mahiã be woatsɔ nutrenu bubu aɖeke aɖo eŋu o.
L NPTF kaawo ƒe nɔnɔme to vovo vie si ɖea mɔ na mɔ̃ ƒe kadodo si me zazã mele o , to vovo na NPT ka siwo hiã wo zi geɖe. PTFE tape alo nutrenu bubuwo
Ðo ŋku edzi be, NPT ku ɖe tapered pipe thread connection si ŋu kakaɖedzi le eye wozãnɛ le afisiafi la wɔwɔ ŋu. Èɖale dɔ wɔm tso ʋu ŋu alo nèle tsi si le dodom le aƒeme ɖɔm ɖo o, NPT kawo nyanya kpena ɖe ŋuwò be nàwɔ kadodo nyuiwo.
NPTF (Dukɔa ƒe pɔmpi taper ami) ka .
![NPT vs NPTF .]()
NPTF ƒe ka ƒe dzidzenuwo kple aɖaŋuwɔwɔ ƒe wɔwɔfia .
NPTF ka, si woyɔna hã be Dryseal American National Standard Taper Pipe Thread , zɔna ɖe ANSI B1.20.3 ƒe dzidzenuwo dzi. Ka siawo sɔ kple NPT gake wowɔ wo be woatre wo nu nyuie wu. NPTF kaawo ƒe axa 60° eye wowɔa mɔ̃ ƒe nutrenu to nusiwo doa kplamatse ka ƒe ta kple kewo dome. Esia fia be kaawo gbãna ɖekae be woawɔ nutrenu sesẽ aɖe evɔ mahiã be woatsɔ nutrenu bubuwo akpe ɖe eŋu o.
Vovototo siwo le NPT kple NPTF dome .
Togbɔ be NPT kple NPTF ƒe kawo ƒe dzedzeme ɖi wo nɔewo hã la, woƒe atsyãwo to vovo . Wotrɔ asi le NPT kawo ŋu le ANSI/ASME B1.20.1 te , eye woate ŋu ahiã PTFE tape alo nutrenu bubuwo be woakpɔ egbɔ be kadodo si me tsi mele o . Le go bubu me la, wowɔa NPTF ka, siwo kplɔ ANSI B1.20.3 , ɖo be woatsɔ awɔ mesh sesĩe wu eye woawɔ nutrenu si me nu bubuwo mele o. Woɖoa esia gbɔ to aɖaŋu si naa ka ƒe ta kple kewo ƒoa ƒu ɖekae, si wɔnɛ be nutrenu si me tsi mele o la nɔa anyi ..
Dɔdamɔnu siwo wozãna le ami kple gas me, nutrenu siwo me tsi mele o la gbɔ ɖoɖo .
Le xexeame ƒe ami kple gas , NPTF ka nye nusi woayi. Wotrɔ asi le wo ŋu be woawɔ nutrenu si me tsi mele o si le vevie ŋutɔ le nyaƒoɖeamenu ƒe ɖoɖowo me . Nuɖoanyi siawo mate ŋu axe fe ɖe nusiwo le dodom le eme ta o, elabena sue aɖe gɔ̃ hã ate ŋu anye afɔku. Wozãa NPTF ka le nyaƒoɖeamenu ƒe dodokpɔ ƒe ɖoɖowo kple akpa siwo me tsi alo gas ƒe dzadzɛnyenye kple eƒe blibonyenye me léle ɖe asi le vevie ŋutɔ.
Zãzã ƒe nɔnɔmewo, alesi woawɔ ɖeka kple wo nɔewo, kple asitɔtrɔ le wo nɔewo ŋu kple NPT .
NPTF kawo nɔa dɔdaƒe siwo nutrenu si me tsi mele o le vevie, eye womedi be woatsɔ nutrenu aɖeke o. Ke hã, togbɔ be woate ŋu atsaka NPTF kple NPT ka ɣeaɖewoɣi hã la, esia menɔa dedie alo wɔa dɔ ɣesiaɣi o. Woate ŋu aƒo NPTF kaawo ɖe NPT ƒe nutunuwo me, gake ɖewohĩ megbededea matre nyuie o elabena wowɔ NPTF be wòate ŋu atsɔe aɖo teƒe si te ɖe eŋu wu. Ele vevie ŋutɔ be nàlé ŋku ɖe alesi wowɔ ɖeka ŋu hafi atsaka wo be woaƒo asa na nyawo abe galling alo nutrenu madzemadzee ene.
NPSM (Dukɔa ƒe pɔmpi dzɔdzɔe mɔ̃ɖaŋu) ka .
![NPSM .]()
NPSM ka ƒe gɔmesese, nɔnɔmewo, kple gɔmedzenufiafiawo .
NPSM ka nye ƒomevi aɖe pɔmpi ƒe ka dzɔdzɔe . Wowɔa ANSI/ASME B1.20.1 ƒe dzidzenuwo dzi. Wotrɔ asi le ka siawo ŋu na mɔ̃wo ƒe kadodo tsɔ wu be woawɔ nutrenu. Dzogoe si ƒe axawo nyea 60° eye woɖoe be woazãe kple gasket alo o-ring atsɔ awɔ kadodo si me tsi mele o ..
Nya vevi siwo ku ɖe NPSM kawo ŋu: - Wole parallel , si fia be didime la sɔ. - NPSM kaawo me Taper abe o NPT (Dukɔa ƒe pɔmpi tapered) ka ene . - Wozãa wo hena mɔ̃wo ƒe kadodowo wɔwɔ . - Nutrenu ƒe dɔwɔwɔ nyuie tso gasketwo me, ke menye kaawo ŋutɔ o.
Dɔwɔwɔwo le hadrolik ɖoɖowo me kple zazã ƒe nɔnɔme nyuitɔ kekeake .
NPSM kawo nɔa hadrolik-mɔ̃wo me zi geɖe afisi nutrenu si me tsi mele o le vevie ŋutɔ. Wowɔa dɔ nyuie le nyaƒoɖeamenu ƒe ɖoɖowo abe nyaƒoɖeamenu ƒe dzidzedzekpɔkpɔ ƒe ɖoɖowo ene me . Nyɔnu pipe swivel fittings bɔ ɖe NPSM threads me, si wɔnɛ be woate ŋu aɖoe bɔbɔe le teƒe siwo xaxa.
Nuzazã nyuie ƒe nɔnɔmewo dometɔ aɖewoe nye: - afisi mɔ̃ ƒe nutrenu le vevie wu ka ƒe nutrenu. - Nuɖoanyi siwo bia be woaɖe wo ɖa enuenu eye woagaƒo wo nu ƒu ake. - Ne wozã gasket alo o-ring la , wodina wu ka si wotsɔ blaa nu ..
Tsɔe sɔ kple ka ƒomevi bubuwo, asitɔtrɔ kple NPTF .
Woate ŋu atɔtɔ NPSM ɣeaɖewoɣi kple NPTF (Dukɔa ƒe pɔmpi si me woɖea ami le), si woyɔna hã be Dryseal American National Standard Taper Pipe Thread . Ale si wotsɔa wo sɔna kple wo nɔewoe nye esi:
Wotrɔ asi le l NPTF ka ŋu be woana nutrenu si me tsi mele o si me tsi mele o la mahiã be woatsɔ nutrenu bubuwo akpe ɖe eŋu o. Wowɔa nusiwo doa kplamatse ame ƒe nɔnɔme si sɔ ɖe dome . ka ƒe crests kple thread roots .
L NPSM kaawo hiã gasket alo O-ring be woakpɔ egbɔ be kadodo si me tsi mele o ..
l NPSM meteŋu trɔa asi le NPTF alo NPT ŋu o le ka ƒe dzidzenu vovovowo ta.
Nutrenu ƒe dɔwɔwɔ nyuie kple dɔwɔƒewo ƒe dɔwɔwɔwo .
Wodea asixɔxɔ NPSM kaawo ŋu le woƒe nutrenu ƒe dɔwɔwɔ nyuie ta ne wozã wo kple mɔ̃ si sɔ nyuie . Wozãa wo le teƒe geɖe le: - tsi kple gas ƒe tsɔtsɔ yi teƒe bubu ƒe dɔwo. - Dɔwɔƒe siwo hiã mɔ̃ɖaŋununya ƒe kadodo si ŋu kakaɖedzi le ..
Dɔwɔƒewo ƒe dɔwɔwɔwo dometɔ aɖewoe nye: - tsi kple tsi gbegblẽwo ŋudɔwɔwɔ. - ya ƒe ɖoɖowo. - Amisisi ƒe ɖoɖowo.
BSPT (Britaintɔwo ƒe dzidzenu ƒe pɔmpi taper) ka .
![BSPT ƒe ka ƒe nutunu .]()
BSPT ƒe ŋgɔdonyawo ƒe ŋgɔdonya .
Ne míele nu ƒom tso BSPT threads ŋu la , míele tsi ƒum ɖe xexe aɖe si me pɔmpiwo kple kadodo siwo le vevie na tsi kple gas ƒe tsɔtsɔ yi teƒe bubu le la me . BSPT tsi tre ɖi na British Standard Pipe Taper . Enye ka ƒomevi aɖe si wotsɔna ƒoa ka ƒomevi aɖe si wozãna tsɔ wɔa nutrenu si me tsi mele o . Wogblɔ dzidzenu sia le nuŋlɔɖiwo abe BS 21 kple ISO 7 ene me..
Nɔnɔme siwo ɖe dzesi eye wotsɔ wo sɔ kple NPT kple NPTF .
BSPT kaawo le etɔxɛ. Woƒe axawo ƒe dzogoe nye 60° eye wole sue, si fia be wo dzina ɖe edzi ne wole goglom ɖe edzi. Esia to vovo na NPT ka , siwo hã nye tapered gake woƒe 60° ka ƒe dzogoe si wozãna le Amerika, abe alesi ANSI/ASME B1.20.1 ɖe emee ene..
Azɔ, mina míatsɔ BSPT asɔ kple NPTF . NPTF, alo National Pipe Taper Fuel , si woyɔna zi geɖe be Dryseal American National Standard Taper Pipe Thread , abe alesi ANSI B1.20.3 gblɔe ene la, wowɔe na nutrenu si sesẽ wu NPT. Eɖoa esia gbɔ to nusiwo doa kplamatse ame ƒe nɔnɔme si sɔ ɖe dome la wɔwɔ me ka ƒe crests kple thread roots . BSPT meɖoa ŋu ɖe esia si sɔ na nutrenu ŋu o. Ke boŋ ate ŋu ahiã be woatsɔ ka ablae abe PTFE tape (Teflon) alo gasket ene be wòaxe mɔ na tsi si le dodom.
BSPT le dukɔwo dome kple xexeame katã ƒe dɔwɔɖoɖowo me .
Wozãa BSPT kaawo le United States godo, vevietɔ le dukɔ siwo wɔ ɖe Britaintɔwo ƒe mɔ̃ɖaŋununya ƒe dzidzenuwo dzi me. Wokpɔa wo zi geɖe le nyaƒoɖeamenu ƒe ɖoɖowo kple nyaƒoɖeamenu ƒe dodokpɔ ƒe ɖoɖowo me . Woƒe ŋutete be woawɔ mɔ̃ɖaŋununya ƒe nutrenu na wosɔ na dukɔwo dome dɔ geɖe wɔwɔ.
Kukuɖenuŋu kple ka ƒomevi bubuwo tsɔtsɔ sɔ kple wo nɔewo .
Ne míelé ŋku ɖe BSPT ŋu kpe ɖe ka ƒomevi bubuwo abe NPSM (National Pipe Straight Mechanical) kple BSPP (Britash Standard Parallel Pipe) ŋu la , míekpɔe be BSPT nye na kadodo si me tsi mele o wɔwɔ le ka siwo le tapered me, esime NPSM kple BSPP nye na straight pipe threads . BSPT ka wɔa mɔ̃ ƒe kadodo evɔ mehiã be woatsɔ asigɛ si wobla ɖe wo nɔewo ŋu alo O-ring , si to vovo na BSPP si ate ŋu ahiã esiawo na nutrenu.
BSPT kaawo nyo ŋutɔ na nɔnɔme siwo me nèhiã nutrenu sesẽ si me tsi mele o, si me tsi mele o, si me nutrenu bubu siwo me mekɔ o la mele o. Wole bɔbɔe wu be woazã wu NPTF threads , si hiã nyaƒoɖeamenu ƒe dzidzenu si sɔ pɛpɛpɛ be woaƒo asa na nyawo abe galling alo nusiwo gblẽ le wo ŋu le sesẽ akpa ta.
Mɔ̃ɖaŋununya ƒe Nɔnɔmewo Kple Dzidzenuwo .
Dzidzenu siwo wozãna ɖaa, ka ƒe xexlẽme, kple ANSI ƒe dzidzenuwo .
Ne míele nu ƒom tso thread fittings abe NPSM, NPTF, NPT, kple BSPT ŋu la, alesi wodoa ka kple pɔmpiwoe la katã ŋue wòku ɖo. siawo Ka ƒe dzidzenu kpena ɖe mía ŋu míekpɔa egbɔ be nuwo sɔ ɖe wo nɔewo nu nyuie. Bu eŋu abe Lego blocks ene – ele be woasɔ pɛpɛpɛ hafi alé ɖe wo nɔewo ŋu.
L NPSM kple NPs ƒe ka dzɔdzɔewo le wo si, si fia be womesẽna ɖe edzi o esi wole ʋuʋum.
L NPT , NPTF , kple BSPT nye esiwo le sue ŋutɔ. Esia fia be wosẽna ɖe edzi, abe funnel ene, si kpena ɖe wo ŋu wodzudzɔa tsi si le dodom.
Amerika Dukɔa ƒe Dzidzenuwo Dɔwɔƒe (ANSI) ɖoa sewo na ka siawo le kpɔɖeŋu me, ANSI/ASME B1.20.1 nye NPT kawo tɔ. Wogblɔa alesi gbegbe wòle be kaawo naloloe, alesi gbegbe wole inch ɖeka me (emae nye ka ƒe xexlẽme), kple nɔnɔme si wòle be wòanɔ wo si.
Nuwo, nuwo wɔwɔ ƒe dzidzenuwo, kple sedziwɔwɔ .
Nuwo le vevie ŋutɔ. Fittings akpa gãtɔ nye ga, abe gakpo alo akɔbli ene, elabena wosẽ. Akpa siawo wɔwɔ zɔna ɖe se sesẽwo dzi be woakpɔ egbɔ be wole dedie eye woanɔ anyi ɣeyiɣi didi aɖe. Esia ku ɖe sedziwɔwɔ ŋu – abe nuɖaɖa ƒe mɔnu aɖe dzi wɔwɔ be woaɖa abolo deblibo ɣesiaɣi ene.
l ANSI B1.20.3 kple abe 1722.1 nye dzidzenu siwo fiaa mɔ alesi woawɔ ka na nyaƒoɖeamenu ƒe ɖoɖowo dometɔ aɖewo ..
l Le UK la, wozãa BS 21 kple ISO 7 na BSPT kple BSPP ka.
Ele be adzɔnuwo wɔlawo hã nakpɔ egbɔ be yewoƒe kaawo ate ŋu akpɔ nyaƒoɖeamenu si wòle be woawɔ la gbɔ evɔ womaɖe wo ɖe go alo agbã o. Afi mae nyonyome ƒe kakaɖedzi va le.
Gɔmesese le ka ƒe didimewo, mɔɖeɖe ɖe nu ŋu, kple nyonyome ƒe kakaɖedzi ŋu .
Ka ƒe didimewo dometɔ aɖewoe nye gbeɖiɖia ƒe kɔkɔme (afikae kaawo dome didi tso wo nɔewo gbɔ) kple dzogoe . Le kpɔɖeŋu me, kaawo ƒe le BSPT kaawo ŋu dzogoe si ƒe axa 60° , si nye nusi na wole etɔxɛ la ƒe akpa aɖe.
l Tolerances nye vovototo sue siwo ŋu woɖe mɔ ɖo le ka ƒe lolome kple nɔnɔme me. Wole abe wiggle room ene le akpa siwo sɔ me ɖekae.
l nyonyome ƒe kakaɖedzi fia be woalé ŋku ɖe akpa ɖesiaɖe ŋu be woakpɔ egbɔ be eɖo dzidzenuwo gbɔ. Ele abe nufiala si le dzesi dem wò sukudɔdasiwo be nàka ɖe edzi be yekpɔ ŋuɖoɖoawo nyuie ene.
Ne èdi be yeakpɔ nutrenu si me tsi mele o la , PTFE tape (Teflon) , gasket , alo O-rings ene kple ka siawo. woate ŋu azã akpa aɖewo abe Tapered threads abe NPT kple BSPT ene ateŋu atre wo ɖokui nu zi geɖe le woƒe nɔnɔme ta – wosẽna ɖe edzi ne wole wo ƒom.
Nyateƒenya siwo wogblɔna kabakaba:
Wotrɔ asi le L NPT kawo ŋu be woanye nusiwo doa kplamatse , si fia be wowɔa mɔ̃ ƒe nutrenu to wo ƒoƒo ɖekae me.
l NPSM ka wɔa dɔ kple nyɔnu pipe swivel – nut ƒomevi aɖe si na be nàte ŋu aƒoe ɖe edzi evɔ màtro pɔmpi bliboa o.
L NPTF kawo woyɔna ɣeaɖewoɣi be Dryseal American National Standard Taper Pipe Thread elabena woɖoe be woatre wo nu evɔ womahiã nu bubuwo abe tape alo paste ene o.
Dɔwɔwɔ le mɔ ŋutɔŋutɔ nu kple numekuku siwo wotsɔ sɔ kple wo nɔewo .
Xexeme ŋutɔŋutɔwo zazã kple nudzɔdzɔwo ŋuti numekuku siwo ku ɖe ka ƒomevi vovovowo ŋu .
Ne míeƒo nu tso thread fittings siwo wozãna le pressure systems me ŋu la , nusiwo wowɔ tsitotsito la le vevie. Mina míalé ŋku ɖe alesi wozãa ka siawo le xexe ŋutɔŋutɔ me ŋu.
NPT kaawo zi geɖe le dɔwɔƒewo ƒe dɔwɔwɔwo katã me. Le kpɔɖeŋu me, Wokpɔa wɔla nyaƒoɖeamenudzidzenuwo ate ŋu azã NPT-nulénuwo le esi wowɔ ɖeka kple dɔwɔnu vovovowo ta.
Wotrɔ asi le NPTF ka siwo woyɔna be Dryseal American National Standard Taper Pipe Thread ŋu na nutrenu si le dedie wu, si me tsi mele o eye mehiã be woatsɔ ka axe mɔ ɖe nu bubuwo nu o . Wozãa wo le dɔ siwo me mɔ̃ɖaŋununya ƒe nutrenu le vevie, abe le mɔ̃memi nana dɔwɔnuwo me ene.
NPSM ka , alo dukɔa ƒe pɔmpi dzɔdzɔe mɔ̃ɖaŋununya zi geɖe kple Wozãa nyɔnu ƒe pɔmpi ƒe tɔtrɔ . Nudzɔdzɔ ŋuti numekuku ate ŋu abia be woawɔ tsi ƒe ɖoɖo si me NPSM-nulénuwo ɖea mɔ be woaƒo wo nu ƒu ahalé be na wo bɔbɔe wu.
BSPT threads , kple woƒe 60° ƒe axadzi dzogoe , bɔ ɖe dukɔwo dome dɔwɔwɔwo me. Wotiaa wo zi geɖe ɖe woƒe nutrenu nyuie le tsi kple gas ƒe tsɔtsɔ yi teƒe bubuwo ƒe ɖoɖowo me ta.
Kukuɖenuŋu si wotsɔ sɔ kple wo nɔewo: NPT vs. NPTF, NPSM vs. NPT, BSPT ƒe nɔƒe tɔxɛ .
Mina míagblẽ vovototo siwo le wo dome la me:
l npt vs. NPTF : Wo ame evea siaa ƒe pɔmpi ka si le tapered le , gake NPTF naa nusiwo doa kplamatse dome ka ƒe crests kple thread roots , si ɖea nutrenu ƒe hiahiã ɖa.
L NPSM vs. NPT : NPSM ƒe pɔmpi ƒe ka dzɔdzɔe le eye wòhiã be gasket alo O-ring nawɔ kadodo si me tsi mele o . NPT ƒe ka siwo le fli me la wɔa nutrenu ɖe kaawo ŋutɔ ŋu.
L BSPT ƒe teƒe tɔxɛ : BSPT kaawo sɔ kple NPT gake ka ƒe dzogoe kple gbeɖiɖi vovovo le wo si , si wɔe be womate ŋu atrɔ asi le wo ŋu kple NPT ƒe nutunuwo o.
Eŋutinunyalawo ƒe gɔmesesewo kple dɔwɔƒea ƒe dɔwɔlawo ƒe aɖaŋuɖoɖo le thread fittings ŋu .
Adzɔhawo ƒe dɔwɔlawo do susua ɖa be woazã PTFE tape (Teflon) alo nutrenu si wotsɔ bla ɖe asigɛ ŋu si me NPT-nutrenuwo le be woakpɔ egbɔ be nutrenu si me tsi mele o . Le NPTF gome la, ele vevie ŋutɔ be woakpɔ egbɔ be wowɔ nu nyuie be woawɔ eƒe dryseal dɔwɔwɔ ŋudɔ.
Ne èle dɔ wɔm kple BSPT Connections , ɖo ŋku edzi be womewɔ ɖeka kple NPT alo NPTF adapter manɔmee o. Eŋutinunyalawo ɖo aɖaŋu be woalé ŋku ɖe ka ƒe dzidzenuwo abe ANSI/ASME B1.20.1 ene ŋu na NPT, ANSI B1.20.3 na NPTF, alo ISO 7 kple BS 21 na BSPT be woakpɔ egbɔ be wosɔ nyuie.
Galling , alo thread ƒe gbegblẽ nye afɔku le nusiwo wotsɔ blaa nu siawo me. Be woaxe mɔ ɖe enu la, megasẽ akpa gbeɖe o eye nàwɔ ɖe nyaƒoɖeamenu ƒe ɖoɖowo ƒe nɔnɔmewo dzi ɣesiaɣi.
Eɖoɖo, edzikpɔkpɔ, kple nu nyuitɔ siwo woawɔ .
Nu nyuitɔ kekeake siwo woawɔ atsɔ aɖo ka ƒomevi vovovowo ɖe ɖoɖo nu .
Ne wole NPSM , NPTF , NPT , alo BSPT ƒe nutunuwo dem la, ele vevie be woawɔ ɖe mɔfiame tɔxɛwo dzi atsɔ akpɔ egbɔ be kadodo si me tsi mele o . Mɔfiame kpui aɖee nye esi:
L NPT kple NPTF :
l Tsɔ PTFE tape alo ka ƒe nutrenu si sɔ la de ŋutsu ƒe ka la me.
l Tsɔ asi bla nusi wotsɔ blae la sesĩe, emegbe nàzã safui na tɔtrɔ mamlɛawo.
l Kpɔ nyuie be màgabla nu wòagbɔ eme o, elabena esia ate ŋu agblẽ nu le kaawo ŋu.
L BSPT :
l Abe NPT ene la, zã PTFE tape alo thread sealant ..
l Kpe nyuie be nàkpɔ mɔ̃ si wotsɔ xea mɔ̃ ƒe nutrenu ..
L NPSM :
l Wotrɔ asi le ka siawo ŋu be woaɖe wo nɔewo kple nyɔnu pipe swivel ..
l Zã gasket alo o-ring hena nutrenu.
l Mègasẽ akpa o, elabena ate ŋu agblẽ nu le gasket la ŋu ..
Kuxi siwo bɔ le eɖoɖo me kple alesi woaɖu wo dzii .
l cross-threading : dzɔna ne threads mewɔ ɖeka o. Dze egɔme ɣesiaɣi be nàxe mɔ ɖe enu.
L Galling : Ga-ɖe-ga ƒe kadodo ate ŋu ahe esia vɛ. Zã amisisi nàtsɔ aƒo asa nɛ.
l Over-Tightening : Ate ŋu ahe ka ƒe gbegblẽ vɛ. Wɔ ɖe Pressure Calibration Systems ƒe mɔfiamewo dzi hena torque nyuitɔ.
l Leakage : Ne tsi si le dodom le eme la, kpɔe ɖa be out of roundness hã le eme hã eye nàkpɔ egbɔ be ka ƒe nuwɔwɔ nyuie ..
Beléle na wo, kuxiwo gbɔ kpɔkpɔ, kple kakaɖedzi nana be ka siwo wotsɔna ƒoa ka na ame ƒe agbenɔƒe didi .
l Dzodzro edziedzi : Kpɔe ɖa be dzesiwo le eŋu be evuvu, xɔ dzo, alo nu gblẽ le eŋu hã.
l Dzadzɛnyenye : Na kawo nanɔ dzadzɛ. Ðiƒoƒo ate ŋu ana tsi nado le eme.
l Nutrenu ƒe gbugbɔgaxɔ : Le ɣeyiɣi aɖe megbe la, nutrenu ate ŋu agblẽ. Gbugbɔ biae alesi wòhiãe.
l Nudzraɖoƒe nyuie : Na spare fittings nanɔ teƒe si ƒu, si le dzadzɛ.
Ɖo ŋku edzi :
l NPT kple NPTF kawo wɔa nutrenu to nusiwo doa kplamatse nu le dome . ka ƒe crests kple kewo .
l BSPT ka siwo wotsɔna xea mɔ na kaawo ɖeɖeko, kple 60° ƒe axadzi ƒe dzogoe si kpena ɖe eŋu le nutrenu ƒe dɔwɔwɔ nyuie me.
L NPSM kawo ɖoa ŋu ɖe mɔ̃ aɖe ƒe kadodo ŋu , si wotsɔa gasket alo o-ring doa ŋusẽe zi geɖe ..
Nya siwo wogblɔna le ka siwo wotsɔna ƒoa ka dzi .
Vovototo vevi siwo le NPSM, NPTF, NPT, kple BSPT kaawo dome .
Ne míeƒo nu tso thread fittings ŋu la , ele abe puzzle ene. Akpa ɖesiaɖe sɔ ɖe mɔ aɖe nu. NPSM (Dukɔa ƒe pɔmpi dzɔdzɔe mɔ̃ɖaŋu) kawo le dzɔdzɔe eye wowɔ wo na mɔ̃ɖaŋununya ƒe ƒunukpeƒe siwo sɔ na wo faa. NPT (National Pipe tapered) threads nye tapered eye wowɔa nutrenu sesẽ to wo dede gogloe me abe alesi wole wo ƒom NPTF (National Pipe Taper Fuel), si woyɔna hã be Dryseal American Standard Taper Pipe Thread , sɔ kple NPT gake wowɔe na nutrenu si nyo wu evɔ mehiã be woatsɔ nutrenu bubu aɖeke akpe ɖe eŋu o. BSPT (Britainch Standard Pipe Taper) ka ya, le go bubu me la, wozãnɛ hena nutrenu siwo le sesẽm le nyaƒoɖeamenu ƒe ɖoɖowo me eye woƒe axawo ƒe dzogoe nyea 55°, si to vovo na dzogoe 60° si wozãna le NPT kaawo me.
Nusiwo woate ŋu atrɔ ɖe wo nɔewo ŋu, kadodo siwo me tsi mele o, kple vodada siwo bɔ .
Azɔ, ɖe nàte ŋu atsaka woa? Menye nyateƒe o. Interchangeability menye fefe si nèdi be yeaƒo kple thread fittings o. zazã NPT kple NPTF ate ŋu awɔ dɔ ɣeaɖewoɣi, gake kakaɖedzi mele eŋu be enye kadodo si me tsi mele o . kple BSPT ? Enye ŋutinya bubu kura le eƒe ka ƒe dzogoe tɔxɛ kple eƒe kɔkɔme ta. Vodada si bɔ wua? Ne míetsɔe be wo katã wosɔ ɖe wo nɔewo nu la. Kpɔ dzidzenuwo ɖa ɣesiaɣi, abe ANSI/ASME B1.20.1 na NPT, be nàƒo asa na tsi si le dodom alo nusiwo gblẽ.
Kaƒoƒo ƒe ƒomevi si sɔ la nyanya na dɔ aɖewo koŋ wɔwɔ .
Eyata aleke nàwɔ atia esi sɔ? Bu dɔa ŋu kpɔ. Le tsi kple gas ƒe tsɔtsɔ yi teƒe bubu gome la , nutrenu si me tsi mele o nye nu vevitɔ. Ne èle dɔ wɔm kple Pressure Systems , BSPT ate ŋu anye mɔ si dzi nàto. Le dɔ siwo hiã mɔ̃ɖaŋununya ƒe nutrenu si me nutrenu mele o gome la, NPTF nye xɔ̃wò. Eye na mɔ̃ɖaŋununya ƒe kadodo si woate ŋu aɖe bɔbɔe la, NPSM ate ŋu anye tiatia nyuitɔ kekeake.
Nyabiase bubu siwo wobia tso ame si be wòatsi dzi ɖe nu ŋutɔŋutɔ siwo ŋu wotsi dzi ɖo ŋu .
l Nukae nye nutrenu nyui aɖe?
PTFE tape (Teflon) zi geɖe kple NPT ka tsɔ kpena ɖe nutrenu ŋu. Wozãa
l Aleke wòle be maƒo woe sesĩe?
Yi ɖadi nusiwo doa kplamatse — te ɖe eŋu ale gbegbe be ka la ƒe ta kple kewo nate ɖe wo nɔewo ŋu, gake megasẽ ale gbegbe be nàɖe kaawo ɖa o.
l Ke dzogoewo ya ɖe?
Ðo ŋku edzi be NPT kple NPTF ƒe axawo ƒe dzogoe nye 60° , eye BSPT ƒe dzogoe nye 55° ..
l Ðe mate ŋu azã nu siawo akea?
Ɣeaɖewoɣi, gake kpɔ nyuie le galling ŋu —ne kaawo le ƒoƒom eye wobla ɖe wo nɔewo ŋu.
l Ke ne ele dodom ɖe eme ya ɖe?
Kpɔe ɖa be nu gblẽ le eŋu alo te asigɛ si wobla ɖe eŋu ƒe nutrenu alo O-ring kpɔ be woakpɔ ametakpɔnu bubu aɖe hã.
Ðo ŋku edzi be alesi sɔ nyuie xɔxɔ le abe dɔwɔnu nyuitɔ tiatia na dɔa ene. Nusiwo katã ku ɖe nyaa ŋu la katã ŋue wòku ɖo. Aɖaŋuɖoɖo siawo nenɔ susu me na wò, eye ànɔ mɔ dzi be yeabi ɖe ka ƒe nutunuwo me hena kadodo siwo me tsi mele o ..
Nyanuwuwuw
Ne míele nu ƒom tso thread fittings abe NPSM , NPTF , NPT , kple BSPT , míele nu ƒom tso akpa siwo kpena ɖe mía ŋu míewɔa ɖeka kple pɔmpiwo kple hoses ɖekae ŋu. Nusiwo wotsɔ wɔa nu siawo kpɔa egbɔ be míaƒe tsi, gas, kple nu bubuwo zɔna to pɔmpiwo me evɔ womedona o. Nusi míesrɔ̃e nye esi:
L NPT nye ka ƒomevi aɖe si wotsɔna ƒoa ka ƒomevi aɖe si wozãna zi geɖe le USA. Enaa wosɔna nyuie elabena kaawo nɔa sue wu le eƒe nuwuwu ɖeka, abe kɔnu ene.
l nptf , si woyɔna hã be Dryseal American National Standard Taper Pipe Thread , le abe NPT ene gake wowɔe be wòawɔ nutrenu si me tsi mele o si me tsi mele o si me tsi mele o wu gɔ̃ hã evɔ mehiã nu bubuwo abe PTFE Tape ene o.
L NPSM , alo Dukɔa ƒe pɔmpi dzɔdzɔe mɔ̃ɖaŋu , le straight pipe kawo . Enyo na mɔ̃ɖaŋununya ƒe kadodo si woate ŋu aɖe ɖa eye woagbugbɔe aƒo ƒu bɔbɔe.
l BSPT , si nye Britaintɔwo ƒe pɔmpi ƒe taper si wozãna ɖaa ƒe kpukpui la sɔ kple NPT tɔ gake ka ƒe dzogoe kple eƒe kɔkɔme to vovo . Ebɔ ɖe teƒe siwo zãa Britaintɔwo ƒe dzidzenuwo.
Ðo ŋku edzi be ne èsɔ nyuie la, efia be nànya wò ka ƒe dzidzenuwo eye nàtia ƒomevi si sɔ na wò nyaƒoɖeamenu ƒe ɖoɖowo ..
Etsɔme ƒe nɔnɔmewo le thread fitting mɔ̃ɖaŋununya kple dɔwɔƒewo ƒe aɖaŋuɖoɖowo me .
ƒe xexeame Thread fittings nɔa tɔtrɔm. Nusiwo le ŋgɔ gbɔna enye si:
l Nutrenu ƒe dɔwɔwɔ nyuie le nyonyom ɖe edzi. Míele mɔ siwo dzi míato awɔ kadodo siwo nye super tight la dim evɔ míahiã gasket alo o-rings bubuwo o ..
l Nuwo le nyonyom ɖe edzi, hã. Esia fia be nusiwo wotsɔna ƒoa nuwoe ate ŋu akpɔ nyaƒoɖeamenu geɖe gbɔ eye woanɔ anyi eteƒe nadidi wu.
l eŋutinunyalawo do susua ɖa ɣesiaɣi be woawɔ ɖe dɔwɔƒea ƒe aɖaŋuɖoɖowo dzi , abe ANSI/ASME B1.20.1 zazã na NPT alo ISO 7 na BSPT, be woakpɔ egbɔ be nusianu sɔ nyuie.
