Views: 842 Author: Site Editor Ɣeyiɣi si Wotae: 2023-12-18 Dzɔtsoƒe: Teƒe
Ðe NPSM, NPTF, NPT, kple BSPT kaƒoƒo gɔme masemase ɖe fu na wòa? Nyati sia afia mɔ wò to ka siawo gɔmesese tsitotsito me, eye wòafia alesi nàde woe tsɔ kpe ɖe nu vevi siwo ŋu nàbu ŋu.
NPT tsi tre ɖi na National Pipe Tapered . Enye ka ƒomevi aɖe si le tsɛ si wozãna tsɔ ƒoa pɔmpiwo kple nusiwo wotsɔ blaa woe. Nusiwo wòle be nànyae nye esi:
l Tapered Threads : NPT threads taper le agbɔsɔsɔ si nye 1/16 inch le inch ɖeka me, si fia be wole kpuie wu le woƒe nuwuwu lɔƒo.
l Ka ƒe Dzidzenuwo : Wowɔna ɖe ANSI/ASME B1.20.1 ƒe dzidzenu dzi.
l Thread Angle : Kaawo ƒe axadzi ƒe dzogoe nye 60°.
l Nutrenu ƒe Dɔwɔwɔ Nyuie : Wowɔa mɔ̃ ƒe nutrenu to nutrenu si sɔ ɖe dome me ka ƒe ta kple kewo .
NPT kawo le afisiafi le nyaƒoɖeamenu ƒe ɖoɖowo me . Wozãa wo tsɔ kpɔa egbɔ be nutrenu si me tsi mele o le:
l Tsi kple Gas ƒe Ʋuʋu : Pɔmpi siwo tsɔa tsi, ami, alo gas.
l Pressure Calibration Systems : Dɔwɔnu siwo dzidzea nyaƒoɖeamenu.
Dɔwɔƒe siwo zãa NPT kawo dometɔ aɖewoe nye:
l Adzɔnuwo wɔwɔ
l Ʋuwo ƒe dɔwɔwɔ
l Yamenutomeyimɔ̃wo
Ne èle NPT threads dem la, wɔ ɖe mɔnu nyuitɔ siawo dzi:
1. Zã PTFE Tape : Xatsa PTFE tape (Teflon) ɖe ŋutsu ƒe ka ŋu be nutrenua nanyo ɖe edzi.
2. Mègasẽe O : Ne èblae wògbɔ eme la, ate ŋu ana galling , afisi kaawo agblẽ le.
3. Kpɔe ɖa be tsi le dodom hã : Do kadodoa kpɔ ɣesiaɣi be tsi le dodom hã.
Nusiwo wozãna zi geɖe dometɔ aɖewoe nye:
l Pɔmpi Siwo Do Ƒome Kple Wo Nɔewo : Abe alesi wòle le wò aƒea ƒe pɔmpiwo me ene.
l Fittings : Abe abɔta alo tees siwo kpena ɖe ame ŋu wòtrɔa mɔ si dzi sisia le ene.
l Leak-Free Connection : Wotrɔ asi le wo ŋu be woawɔ nutrenu sesẽ aɖe.
l Wolɔ̃ ɖe edzi le afisiafi : NPT nye dzidzenu le dɔwɔƒe geɖe me.
l Afɔku si le kaawo ƒe sesẽ akpa me : Ate ŋu adzɔ be woagblẽ kaawo.
l Ate Ŋu Abia Nutrenu : Ɣeaɖewoɣi la, ehiãna be woatsɔ nutrenu bubuwo awɔ nutrenu si me tsi mele o.
l Wotrɔ asi le NPTF , alo National Pipe Taper Fuel , si wogayɔna be Dryseal American National Standard Taper Pipe Thread , ŋu be wòana nutrenu nasẽ wu evɔ mahiã be woatsɔ nutrenu bubu aɖeke akpe ɖe eŋu o.
l NPTF kawo ƒe wɔwɔme to vovo vie si na be woate ŋu atsɔ mɔ̃ awɔ kadodo zazã manɔmee PTFE ka alo nutrenu bubuwo , to vovo na NPT ka siwo hiãa wo zi geɖe.
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 ɖɔm ɖo le aƒeme o, NPT kawo ŋuti nyanya kpena ɖe ŋuwò nèwɔa kadodo nyuitɔwo.
NPTF ka siwo 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 woatsɔ atre nu nyuie wu. NPTF kawo ƒe axadzi ƒe dzogoe nye 60° eye wowɔa mɔ̃ ƒe nutrenu to nusiwo doa kplamatse ka ƒe ta kple kewo dome. Esia fia be kaawo gbãna ɖekae wòzua nutrenu sesẽ aɖe evɔ mehiã be woatsɔ nutrenu bubuwo akpe ɖe eŋu o.
Togbɔ be NPT kple NPTF kawo ƒe dzedzeme ɖi wo nɔewo hã la, woƒe nɔnɔmewo to vovo . Wotrɔ asi le NPT kawo ŋu le ANSI/ASME B1.20.1 te , eye woate ŋu ahiã PTFE ka alo nutrenu bubuwo be woakpɔ egbɔ be kadodo si me tsi mele o le wo dome . Le go bubu me la, ANSI B1.20.3 ɖo, be woaƒo ƒu sesĩe wu eye woawɔ nutrenu si me nu bubu aɖeke mele o. wowɔa NPTF ka, siwo kplɔ Wowɔa esia to aɖaŋu aɖe si ana kaawo ƒe ta kple kewo te ŋu ƒoa ƒu ɖekae, si wɔnɛ be nutrenu si me tsi mele o nɔa wo me.
In the world of fuel and gas , NPTF kawo nye tiatia si 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 na tsi si le dodom o, elabena sue aɖe gɔ̃ hã ate ŋu anye afɔku. Wozãa NPTF kawo le nyaƒoɖeamenu ƒe dzidzenuwo kple akpa siwo me tsi alo gas ƒe dzadzɛnyenye kple blibonyenye me léle ɖe asi le vevie le.
Zi geɖe la, wokpɔa NPTF kawo le dɔwɔwɔ siwo me nutrenu si me tsi mele o le vevie le, eye womedi be woatsɔ nutrenu aɖeke awɔe 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 atsɔ ga abla NPTF kawo ɖe NPT ƒe nutunuwo me, gake ɖewohĩ megbea matre nyuie o elabena wowɔ NPTF be wòate ɖe wo nɔewo ŋu wu. Ele vevie ŋutɔ be nàlé ŋku ɖe wo nɔewo ŋu hafi nàtsaka wo be nàƒo asa na nyawo abe galling alo nutrenu si mesɔ o ene.
NPSM kawo nye ƒomevi aɖe pɔmpi ƒe ka dzɔdzɔe . Wowɔna ɖe ANSI/ASME B1.20.1 ƒe dzidzenuwo dzi. Wotrɔ asi le ka siawo ŋu be woatsɔ aƒo ka na mɔ̃wo tsɔ wu be woawɔ nutrenu. Woƒe axadzi ƒe dzogoe nye 60° eye woɖoe be woazã wo kple gasket alo O-ring be woawɔ kadodo si me tsi aɖeke mele o.
Nya vevi siwo ku ɖe NPSM kawo ŋu: - Wole parallel , si fia be woƒe didime sɔ. - NPSM kawo mewɔa taper abe NPT (National Pipe Tapered) kawo ene o. - Wozãa wo hena mɔ̃ɖaŋu kadodowo wɔwɔ . - Nutrenu ƒe dɔwɔwɔ nyuie tsoa gaskets gbɔ, ke menye kaawo ŋutɔ gbɔ o.
Zi geɖe la, wokpɔa NPSM kawo le hadrolik-mɔ̃wo me afisi nutrenu si me tsi mele o le vevie ŋutɔ. Wowɔa dɔ nyuie le nyaƒoɖeamenu ƒe ɖoɖowo abe nyaƒoɖeamenu ƒe dzidzenuwo ene me . Female Pipe Swivel fittings bɔ ɖe NPSM kawo me, si wɔnɛ be woate ŋu atsɔ wo ade teƒe siwo xaxa bɔbɔe.
Zãzã nyuitɔwo dometɔ aɖewoe nye: - Afisi mɔ̃ ƒe nutrenu le vevie wu ka ƒe nutrenu. - Dɔwɔɖoɖo siwo hiã be woaɖe wo ɖa enuenu ahagbugbɔ wo aƒo ƒu. - Ne èle gasket alo O-ring zãm la , enyo wu ka si wotsɔna tsia nu nu.
Woate ŋu atɔtɔ NPSM ɣeaɖewoɣi kple NPTF (Dukɔa ƒe Pipe Taper Fuel), si wogayɔna be Dryseal American National Standard Taper Pipe Thread . Alesi wotsɔe sɔ kple wo nɔewoe nye esi:
l NPTF kawo ŋu be woana Wotrɔ asi le nutrenu si me tsi mele o nanɔ anyi evɔ mahiã be woatsɔ nutrenu bubuwo akpe ɖe eŋu o. Wowɔa nusi doa kplamatse dome ka ƒe ta kple ka ƒe kewo .
l NPSM kawo hiã gasket alo O-ring be woakpɔ egbɔ be kadodo si me tsi mele o le wo dome.
l NPSM mateŋu atrɔ kple NPTF alo NPT o le ka ƒe dzidzenu vovovowo ta.
Wodea asixɔxɔ NPSM kawo ŋu le woƒe nutrenu ƒe ŋutete ta ne wozã wo kple mɔ̃ ƒe nutrenu nyuitɔ . Wozãa wo geɖe le: - Lãmetsi kple gas ƒe asitɔtrɔdɔwo me. - Dɔwɔƒe siwo hiã mɔ̃ɖaŋununya ƒe kadodo si ŋu kakaɖedzi le.
Dɔwɔƒewo ƒe dɔwɔwɔwo dometɔ aɖewoe nye: - Tsi kple tsi gbegblẽwo ŋuti dɔwɔwɔ. - Yaƒoƒo ƒe ɖoɖowo. - Amisisi ƒe ɖoɖowo.
Ne míele nu ƒom tso BSPT kawo ŋu la , míele gegem ɖe xexe si me pɔmpiwo kple kadodo siwo le vevie na tsi kple gas ƒe asitɔtrɔ le la me . BSPT tsi tre ɖi na Britaintɔwo ƒe Standard Pipe Taper . Enye ka ƒomevi aɖe si le tsɛ si wozãna tsɔ wɔa nutrenu si me tsi mele o . Wogblɔ dzidzenu sia le nuŋlɔɖiwo abe BS 21 kple ISO 7 ene me.
BSPT kawo le etɔxɛ. Woƒe axadzi ƒe dzogoe nye 60° eye wole tsɛ, si fia be wova nɔa kpuie wu ne wole goglom ɖe edzi. Esia to vovo na NPT ka , siwo hã le tsɛ gake woƒe ka ƒe dzogoe nye 60° si wozãna le Amerika, abe alesi woɖee fia le ANSI/ASME B1.20.1 me 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. Ewɔa esia to nusi doa kplamatse dome wɔwɔ me ka ƒe ta kple ka ƒe kewo . BSPT meɖoa ŋu ɖe fit sia ŋu hena nutrenu o. Ke boŋ ate ŋu ahiã be woatsɔ ka atre nu abe PTFE tape (Teflon) alo gasket ene be wòaxe mɔ na tsi si le dodom.
Wozãa BSPT ka geɖe le United States godo, vevietɔ le dukɔ siwo zɔna ɖe Britaintɔwo ƒe mɔ̃ɖaŋununya ƒe dzidzenuwo dzi me. Wokpɔa wo zi geɖe le nyaƒoɖeamenu ƒe ɖoɖowo kple nyaƒoɖeamenu ƒe dzidzenuwo me . Ŋutete si le wo si be woawɔ mɔ̃ ƒe nutrenu na wosɔ na dukɔwo dome dɔ geɖe wɔwɔ.
Ne míelé ŋku ɖe BSPT ŋu kpe ɖe ka ƒomevi bubuwo abe NPSM (National Pipe Straight Mechanical) kple BSPP (British Standard Parallel Pipe) ŋu la , míekpɔe be BSPT nye na kadodo si me tsi mele o wɔwɔ le ka siwo le tsɛ me, gake NPSM kple BSPP ya nye na pɔmpi dzɔdzɔe ka . BSPT kawo wɔa mɔ̃ɖaŋununya ƒe kadodo evɔ mehiã be woatsɔ asigɛ si wobla ɖe nutrenu alo O-kplu ŋu o , to vovo na BSPP si ate ŋu ahiã esiawo hena nutrenu.
BSPT kawo nyo ŋutɔ na nɔnɔme siwo me nèhiã nutrenu sesẽ si me tsi mele o si me nutrenumɔnu bubuwo ƒe sesẽ manɔmee. They’re simpler to use than NPTF threads , siwo hiã be woawɔ nyaƒoɖeamenu ƒe dzidzedze pɛpɛpɛ be woaƒo asa na nyawo abe galling alo nusiwo gblẽ le wo ŋu le wo ŋu wògbɔ eme ene.
Ne míeƒo nu tso ka siwo wotsɔ blaa pɔmpiwo abe NPSM, NPTF, NPT, kple BSPT ene ŋu la, alesi wodoa ka kple pɔmpiwo hetrea woe ŋu koe 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 woate ŋu alé ɖe wo nɔewo ŋu.
l NPSM kple NPS ƒe ka dzɔdzɔewo le wo si, si fia be womesẽna ɖe edzi ne wole ʋuʋum ɖe eme o.
l NPT , NPTF , kple BSPT nye esiwo le sue. Esia fia be wosẽna ɖe edzi nyateƒe, abe funnel ene, si kpena ɖe ame ŋu be tsi si le dodom la nu tsona.
Amerika Dukɔa ƒe Dzidzenuwo Dɔwɔƒe (ANSI) ɖoa sewo na ka siawo le United States Le kpɔɖeŋu me, ANSI/ASME B1.20.1 nye NPT kaƒoƒo tɔ. Wogblɔa alesi wòle be kaawo naloloe, agbɔsɔsɔme si le inch ɖeka me (kaawo ƒe xexlẽmee nye ema), kple nɔnɔme si wòle be woanɔ wo si la na mí.
Nusiwo wotsɔ wɔe le vevie ŋutɔ. Ga si wotsɔ blaa nu ƒe akpa gãtɔ nyea ga, abe gakpo alo akɔbli ene, elabena wosẽna. Akpa siawo wɔwɔ zɔna ɖe se sesẽwo dzi be woakpɔ egbɔ be wole dedie eye woanɔ anyi eteƒe nadidi. Esia ku ɖe sedziwɔwɔ ŋu – abe nuɖaɖa ŋuti ɖoɖo aɖe dzi wɔwɔ be woaɖa abolo si de blibo ɣesiaɣi ene.
l ANSI B1.20.3 kple AS 1722.1 nye dzidzenu siwo fiaa mɔ alesi woawɔ ka na nyaƒoɖeamenu ƒe ɖoɖowo la dometɔ aɖewo.
l Le UK la, wozãa BS 21 kple ISO 7 na BSPT kple BSPP kaƒoƒo.
Ele be adzɔnuwo wɔlawo hã nakpɔ egbɔ be yewoƒe kawo ate ŋu akpɔ nyaƒoɖeamenu si wòle be woawɔ gbɔ evɔ womatsi alo agbã o. Afi mae nyonyome ƒe kakaɖedzi va le.
Ka ƒe didime dometɔ aɖewoe nye ka ƒe kɔkɔme (aleke gbegbe kaawo dome didi) kple dzogoe . kaawo ƒe Le kpɔɖeŋu me, BSPT kawo ƒe axadzi ƒe dzogoe nye 60° , si nye nusi na wole etɔxɛ ƒe akpa aɖe.
l Mɔɖeɖe ɖe nu ŋu nye vovototo sue siwo ŋu woɖe mɔ ɖo le ka ƒe lolome kple nɔnɔme me. Wole abe xɔ si me woʋuʋua nu le ene le kakɛ siwo wotsɔ ƒo ƒui me.
l Dzɔdzɔmeŋutete ƒe kakaɖedzi fia be woalé ŋku ɖe akpa ɖesiaɖe ŋu akpɔe ɖa be eɖo dzidzenuwo gbɔ hã. Ele abe nufiala aɖe le dzesi dem wò sukudɔdasiwo be yeaka ɖe edzi be yekpɔ ŋuɖoɖoawo nyuie ene.
Le nutrenu si me tsi mele o gome la , akpa aɖewo abe PTFE tape (Teflon) , gaskets , alo O-rings kple ka siawo. woate ŋu azã Ka siwo le gbadzaa abe NPT kple BSPT ene ateŋu atre nu le wo ɖokui si zi geɖe le woƒe nɔnɔme ta – wosẽna ɖe edzi ne wole wo ƒom ɖe eme.
l Wotrɔ asi le NPT kawo ŋu be woanye interference fit , si fia be wowɔa mɔ̃ ƒe nutrenu to wo ƒoƒo ɖekae me.
l NPSM kawo wɔa dɔ kple nyɔnu ƒe pɔmpi si trɔna – nut ƒomevi aɖe si nana nètsɔa ga ƒoa eŋu evɔ màtrɔ pɔmpi bliboa o.
l Woyɔa NPTF ka ɣeaɖewoɣi be Dryseal American National Standard Taper Pipe Thread elabena woɖoe be woatre wo nu evɔ mahiã be woatsɔ nu bubuwo abe tape alo paste ene o.
Ne míeƒo nu tso ka siwo wozãna le nyaƒoɖeamenu ƒe ɖoɖowo me ŋu la, nya siwo wogblɔ tsitotsito le vevie. Mina míalé ŋku ɖe alesi wozãa ka siawo le xexe ŋutɔŋutɔ me ŋu.
NPT kawo zi geɖe le dɔwɔƒewo ƒe dɔwɔwɔ le xexeame katã. Wokpɔa Le kpɔɖeŋu me, amesi wɔa nyaƒoɖeamenu ƒe dzidzenuwo ate ŋu azã NPT ƒe nuzazãwo le esi wosɔ kple dɔwɔnu vovovowo ta.
Wotrɔ asi le NPTF ka , si wogayɔna be Dryseal American National Standard Taper Pipe Thread , ŋu be woatsɔ nutrenu si le dedie wu, si me tsi mele o, evɔ mahiã be woatsɔ ka atre nu bubuwoe o . Wozãa wo le dɔwɔwɔ siwo me mɔ̃ ƒe nutrenu le vevie le, abe le mɔ̃memi nana dɔwɔnuwo me ene.
NPSM ka alo National Pipe Straight Mechanical kple Zi geɖe la , wozãa nyɔnu ƒe pɔmpi si trɔna . Nudzɔdzɔ aɖe me dzodzro ate ŋu alɔ tsi ƒe ɖoɖo si me NPSM ƒe nuzazãwo na woate ŋu aƒo wo nu ƒu ahalé be na wo bɔbɔe wu ɖe eme.
BSPT ka , kple woƒe 60° flank angle , bɔ le dukɔwo dome dɔwɔwɔwo me. Wotiaa wo zi geɖe le woƒe nutrenu ƒe ŋutete le tsi kple gas ƒe asitɔtrɔ ƒe ɖoɖowo me ta.
Mina míama vovototoawo me:
l NPT vs. NPTF : Wo ame evea siaa ƒe ka si le pɔmpi si le gbadzaa le wo si , gake NPTF naa mɔxenu si sɔ ɖe dome ka ƒe ta kple ka ƒe ke , si wɔnɛ be mehiã be woatsɔ nutrenu o.
l NPSM vs. NPT : NPSM ƒe pɔmpi ƒe ka dzɔdzɔewo le esi eye wòhiã be woatsɔ gasket alo O-ring awɔ kadodo si me tsi aɖeke mele o . NPT ƒe ka siwo le tsɛ la wɔa nutrenu to kaawo ŋutɔ dzi.
l BSPT ƒe Teƒe Tɔxɛ : BSPT kawo sɔ kple NPT gake ka ƒe dzogoe kple gbeɖiɖi to vovo , si wɔe be womate ŋu atrɔ wo kple NPT ƒe nuzazãwo o.
Adzɔnuwɔƒea ŋuti nunyalawo do susua ɖa be woazã PTFE tape (Teflon) alo asigɛ ƒe nutrenu si wobla kple NPT ƒe nutrenu be woakpɔ egbɔ be nutrenu si me tsi mele o le eme . Le NPTF gome la, ele vevie ŋutɔ be woakpɔ egbɔ be wowɔ dɔ nyuie be woawɔ eƒe dryseal dɔwɔwɔ ŋudɔ.
When working with BSPT connections , ɖo ŋku edzi be womewɔ ɖeka kple NPT alo NPTF si me adapter mele o. Eŋutinunyalawo ɖo aɖaŋu be woalé ŋku ɖe ka ƒe dzidzenuwo abe ANSI/ASME B1.20.1 na NPT, ANSI B1.20.3 na NPTF, alo ISO 7 kple BS 21 na BSPT be woakpɔ egbɔ be wosɔ nyuie.
Galling , alo ka ƒe gbegblẽ, nye afɔku le nusiwo wotsɔ blaa nu siawo ŋu. Be nàxe mɔ ɖe enu la, mègasẽe wòagbɔ eme gbeɖe o eye nàwɔ ɖe nyaƒoɖeamenu ƒe ɖoɖowo ƒe ɖoɖowo dzi ɣesiaɣi.
Ne èle NPSM , NPTF , NPT , alo BSPT ƒe nuzazãwo dem la, ele vevie be nàwɔ ɖe mɔfiame tɔxɛwo dzi be nàkpɔ egbɔ be kadodo si me tsi aɖeke mele o le eme . Mɔfiame kpui aɖee nye esi:
l NPT kple NPTF : .
l De PTFE tape alo ka si sɔ nutrenu ɖe ŋutsu ka la ŋu.
l Tsɔ asi bla nusi wotsɔ blae la sesĩe, emegbe nàzã safui na tɔtrɔ mamlɛawo.
l Kpɔ nyuie be màgablae wòagbɔ eme o, elabena esia ate ŋu agblẽ nu le kaawo ŋu.
l BSPT ƒe xexlẽme : .
l Abe NPT ene la, zã PTFE tape alo ka ƒe nutrenu.
l Kpee nyuie be nàkpɔ mɔ̃ ƒe nutrenu.
l NPSM ƒe xexlẽme : .
l Wotrɔ asi le ka siawo ŋu be woawɔ ɖeka kple nyɔnu ƒe pɔmpi si trɔna.
l Zã gasket alo O-ring hena nutrenu.
l Mègablae wòagbɔ eme o, elabena ate ŋu agblẽ nu le gasket la ŋu.
l Cross-threading : Edzɔna ne kaawo mele ɖoɖo nu o. Dze egɔme kple asi ɣesiaɣi be nàxe mɔ ɖe enu.
l Galling : Ga kple ga ƒe kadodo ate ŋu ahe esia vɛ. Zã amisisi be nàƒo asa nɛ.
l Ne woblae fũ akpa : Ate ŋu ana ka nagblẽ. Wɔ ɖe nyaƒoɖeamenu dzidzedze ƒe ɖoɖowo ƒe mɔfiamewo dzi hena torque nyuitɔ.
l Leakage : Ne tsi le dodom la, kpɔe ɖa be megoglo o eye nàkpɔ egbɔ be ka la ƒo ɖe eme nyuie.
l Dzroƒe Edziedzi : Kpɔe ɖa be dzesiwo le eŋu be evuvu, xɔ dzo, alo gblẽ hã.
l Dzadzɛnyenye : Na kawo nanɔ dzadzɛ. Ði ate ŋu ana tsi nado.
l Sealant Gbugbɔgazã : Le ɣeyiɣi aɖe megbe la, sealant ate ŋu agblẽ. Gbugbɔ ŋlɔe ne ehiã.
l Nudzraɖoƒe Nyui : Dzra nusiwo woatsɔ awɔ dɔe la ɖe teƒe ƒuƒui si le dzadzɛ.
Ɖo ŋku edzi :
l NPT kple NPTF kawo wɔa nutrenu to nusiwo doa ƒe sɔsɔ me dome kplamatse ka ƒe ta kple kewo .
l BSPT kawo xea nu to kaawo ɖeɖeko dzi, eye 60° ƒe axadzi ƒe dzogoe kpena ɖe nutrenu ƒe dɔwɔwɔ nyuie ŋu.
l NPSM kawo ɖoa ŋu ɖe mɔ̃ ƒe kadodo ŋu , si wotsɔa gasket alo O-ring doa ŋusẽe zi geɖe.
Ne míeƒo nu tso ka siwo wotsɔ blaa nu ŋu la , ele abe aɖaŋunu aɖe ene. Kakɛ ɖesiaɖe sɔ le mɔ aɖe nu. NPSM (National Pipe Straight Mechanical) kawo le dzɔdzɔe eye wowɔ wo na mɔ̃ɖaŋunu siwo woate ŋu atsɔ awɔ dɔe faa. Woɖea NPT National Pipe Tapered) kawo dzi kpɔtɔna eye wowɔa nutrenu sesĩe to wo dede eme goglo wu ne wole wo ƒom ɖe me ( wo . BSPT (British Standard Pipe Taper) kawo tsɔ wɔa nutrenu sesẽwo le nyaƒoɖeamenu ƒe ɖoɖowo me eye woƒe axadzi ƒe dzogoe nye 55°, si to vovo na dzogoe si nye 60° si wozãna le NPT kawo me. Gake wozãa
Azɔ, ɖe nàte ŋu atsaka wo? Menye nenema tututue o. Interchangeability menye fefe si nèdi be yeatsɔ ka awɔe o. zazã NPT kple NPTF ateŋu awɔ dɔ ɣeaɖewoɣi, gake womeka ɖe edzi be anye kadodo si me tsi aɖeke mele o . Eye BSPT hã ? Enye ŋutinya si to vovo kura le eƒe ka ƒe dzogoe kple eƒe kɔkɔme tɔxɛ ta. Vodada si bɔ wue nye esi? Ne míetsɔe be wo katã sɔ ɖekae. Lé ŋku ɖe dzidzenuwo ŋu ɣesiaɣi, abe ANSI/ASME B1.20.1 na NPT ene, be nàƒo asa na tsi si dona alo agblẽ nu le wo ŋu.
Eyata aleke nàwɔ atia esi sɔ? Bu dɔa ŋu kpɔ. For fluid and gas transfer , nutrenu si me tsi mele o ye nye nu vevitɔ. Ne èle dɔ wɔm kple nyaƒoɖeamenu ƒe ɖoɖowo la, , BSPT ate ŋu anye mɔ si dzi nàto. Le dɔwɔwɔ siwo hiã mɔ̃ ƒe nutrenu si me nutrenu mele o gome la, NPTF nye xɔ̃wò. Eye le mɔ̃ɖaŋununya ƒe kadodo si woate ŋu ama bɔbɔe gome la, NPSM ate ŋu anye tiatia nyuitɔ kekeake.
l Nukae nye nutrenu nyui aɖe?
PTFE tape (Teflon) zi geɖe kple NPT kawo be wòakpe ɖe wo ŋu woatre nu. Wozãa
l Aleke gbegbee wòle be matsɔ gavi abla woe?
Yi ɖadi interference fit —si le sesẽm ale gbegbe be ka ƒe ta kple kewo nate ɖe wo nɔewo ŋu, gake menye sesĩe ale gbegbe be nàɖe kaawo ɖa o.
l Ke dzogoewo ya ɖe?
Ðo ŋku edzi be NPT kple NPTF ƒe axadzi ƒe dzogoe nye 60° , eye BSPT ƒe dzogoe nye 55°.
l Ðe mate ŋu azã fittings siawo akea?
Ɣeaɖewoɣi la, gake kpɔ nyuie le galling —ne kawo vuvu eye wolé ɖe wo nɔewo ŋu.
l Ke ne edo le eme ya ɖe?
Kpɔe ɖa be nu gblẽ hã alo te asigɛ si wobla ɖe nutrenu alo O-ring ŋu kpɔ hena ametakpɔnu bubu aɖe.
Ðo ŋku edzi be amesi sɔ nyuie ƒe amesinɔnɔ le abe dɔwɔnu nyuitɔ tiatia na dɔa ene. Nusiwo katã ku ɖe nyaa ŋu tsitotsito. Aɖaŋuɖoɖo siawo nenɔ susu me na wò, eye ànɔ mɔ dzi yina be yeabi ɖe ka siwo wotsɔna ƒoa ka na kadodo siwo me tsi mele o ŋu.
Ne míele nu ƒom tso ka siwo wotsɔna ƒoa ka abe NPSM , NPTF , NPT , kple BSPT ene ŋu la, míele nu ƒom tso akpa siwo kpena ɖe mía ŋu míeƒoa pɔmpiwo kple hosewo nu ƒu ɖekae ŋu. Nu siawo nana be míaƒe tsi, gas, kple nu bubuwo zɔna to pɔmpiwo me evɔ wometsina o. Nusiwo míesrɔ̃e nye esi:
l NPT nye ka ƒomevi aɖe si wozãna le USA. Enaa wòdzena sesĩe elabena kaawo va nɔa sue ɖe edzi le woƒe nugbɔ 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 sesẽ wu gɔ̃ hã evɔ mahiã be woatsɔ nu bubuwo abe PTFE tape ene o.
l NPSM , alo National Pipe Straight Mechanical , ƒe pɔmpi ƒe ka dzɔdzɔewo le esi . Enyo na mɔ̃ɖaŋununya ƒe kadodo si woate ŋu ama eye woagatsɔe aƒo ƒui bɔbɔe la wɔwɔ.
l BSPT , si nye British Standard Pipe Taper ƒe kpukpui , sɔ kple NPT gake ka ƒe dzogoe kple eƒe kɔkɔme to vovo . Ebɔ le teƒe siwo zãa Britaintɔwo ƒe dzidzenuwo.
Ðo ŋku edzi be alesi nàsɔ nyuie fia be nànya wò ka ƒe dzidzenuwo eye nàtia ƒomevi nyuitɔ na wò nyaƒoɖeamenu ƒe ɖoɖowo.
ƒe xexeame Ka siwo wotsɔna ƒoa ka yia edzi le tɔtrɔm. Nusiwo le ŋgɔ gbɔnae nye esi:
l Nutrenu ƒe dɔwɔwɔ nyuie le nyonyom ɖe edzi. Míele mɔ siwo dzi míato awɔ kadodo siwo le sesẽm ŋutɔ evɔ mahiã gasket alo O-ring bubuwo o la dim.
l Nuzazãwo hã le nyonyom ɖe edzi. Esia fia be fittings ate ŋu akpɔ nyaƒoɖeamenu geɖe gbɔ eye woanɔ anyi eteƒe nadidi wu.
l Eŋutinunyalawo do susua ɖa be woawɔ ɖe dɔwɔƒea ƒe aɖaŋuɖoɖowo dzi ɣesiaɣi , abe ANSI/ASME B1.20.1 zazã na NPT alo ISO 7 na BSPT ene, be woakpɔ egbɔ be nusianu sɔ nyuie.
