Thaum lub sij hawm kuv tshawb nrhiav cov khoom fittings thiab adapters, kuv tau hla ib yam dab tsi nthuav heev: SAE thiab NPT threads.Xav txog lawv li cov hnub qub qab ntawm qhov chaw hauv peb lub tshuab.Tej zaum lawv yuav zoo sib xws thaum xub thawj siab ib muag, tab sis lawv yeej txawv heev nyob rau hauv qhov lawv tsim, lawv ua hauj lwm li cas, thiab yuav ua li cas lawv kaw cov khoom.Kuv zoo siab heev los qhia rau koj txog qhov kuv tau kawm txog cov xov no.Cia peb dhia dej rau hauv thiab txheeb xyuas seb qhov twg ua rau lawv sib nrug thiab vim li cas txhua tus tseem ceeb rau kev ua kom peb cov tshuab ua haujlwm zoo dua thiab kav ntev.
Nkag siab SAE Threads
Kev txhais thiab hom thiab yam ntxwv ntawm SAE Threads
SAE threads yog precision threads siv dav hauv kev lag luam tsheb thiab hydraulics.Cov xov no ua raws li cov qauv tsim los ntawm Lub Koom Haum ntawm Automotive Engineers (SAE).Muaj ntau yam SAE Thread Types, tab sis feem ntau yog Txoj Xov Ncaj O-Ring Boss (ORB).Hom no nta cov xov ncaj thiab O-ring tsim los tsim ib lub foob.SAE J514 tube fittings tus qauv qhia txog cov lus qhia tshwj xeeb rau cov xov no.
Cov yam ntxwv ntawm SAE threads muaj xws li:
l Uniform diameters rau qhov tshwj xeeb bolt loj
l Tus qauv tsim ncaj uas tso cai rau siv lub nplhaib O-ring
l Compatibility nrog SAE J518 tus qauv rau flange fittings
Kev siv thiab kev cuam tshuam hauv Hydraulic
Hauv hydraulics, SAE threads yog qhov tseem ceeb.Lawv ua kom muaj kev sib txuas tsis muaj dej hauv cov tshuab hluav taws xob siab.Lub O-Ring Boss fittings yog qhov tshwj xeeb vim tias lawv tuaj yeem ua ntau yam ntawm cov kua dej hydraulic yam tsis muaj qhov to.SAE Txiv neej Connector thiab SAE Poj Niam Connector yog ib qho tseem ceeb hauv Kev Sib Txuas SAE Fittings los tsim kom muaj lub cev muaj zog.
Cov ntawv thov suav nrog:
l Hydraulic twj tso kua mis
l Valves
l Lub tog raj kheej
Cov xov no tswj kev ncaj ncees los ntawm kev tiv thaiv cov kua dej tawm, uas yog qhov tseem ceeb rau kev nyab xeeb thiab kev ua haujlwm zoo.
SAE Thread Sizes thiab Identification
Kev txheeb xyuas SAE xov qhov ntau thiab tsawg yog ncaj nraim.Txhua txoj xov yog tsim los ntawm tus lej khiav (piv txwv li, -4, -6, -8) uas sib raug rau cov xov loj hauv kaum rau ntawm ib nti.Piv txwv li, ib tug -8 xov loj txhais tau hais tias cov xov txoj kab uas hla yog 8/16 los yog 1/2 nti.
Txhawm rau txheeb xyuas SAE threads:
1. Ntsuas cov kab sab nraud ntawm tus txiv neej xov los yog lub puab txoj kab uas hla ntawm tus poj niam xov.
2. Suav cov xov tooj ntawm ib nti (TPI).
Tus qauv SAE J518, nrog rau cov qauv thoob ntiaj teb zoo li DIN 20066, ISO / DIS 6162, thiab JIS B 8363, muab cov lus qhia dav dav rau SAE Xov Loj thiab suav nrog cov ntsiab lus xws li flange clamp qhov ntev thiab qhov loj me ntawm lub ntsia liaj qhov rooj.
Hauv cov ntsiab lus, SAE threads yog ib qho tseem ceeb rau cov tshuab hydraulic, ua kom muaj kev ruaj ntseg thiab ua tau zoo.Lawv qhov ntau thiab tsawg thiab hom qauv, xws li Straight Thread O-Ring Boss, ua rau lawv xaiv rau cov kws tshaj lij hauv kev lag luam.Nkag siab cov xov no yog qhov tseem ceeb rau txhua tus neeg ua haujlwm nrog hydraulic fittings thiab adapters.
Cov Lus Qhia ntxaws ntxaws rau SAE Xov Loj thiab Cov Lus Qhia Tshwj Xeeb
Txheej txheem cej luam ntawm SAE Thread Charts thiab Measurements
Thaum peb tham txog SAE xov kab kos, peb tab tom xa mus rau ib qho system uas categorizes qhov ntau thiab tsawg thiab kev ntsuas ntawm threads siv nyob rau hauv txuas hydraulic kav thiab fittings.SAE Xov Hom yog qhov tseem ceeb hauv kev ua kom muaj kev ruaj ntseg thiab tsis muaj kev sib txuas hauv cov tshuab hydraulic.Tsis zoo li NPT xov los yog National Yeeb Nkab Tapered threads, uas muaj ib tug tapered tsim, SAE threads yog feem ntau ncaj thiab yuav tsum tau ib tug O-ring los tsim ib tug watertight foob.
SAE Txiv neej thiab poj niam Connector Specifications
Rau cov ntawm koj ua hauj lwm nrog SAE Txiv neej Connector thiab SAE Poj Niam Connector qhov chaw, nws yog ib qho tseem ceeb kom nkag siab txog lawv cov specifications.SAE Txiv neej Connector feem ntau muaj cov xov sab nraud, thaum SAE Poj Niam Connector los nrog cov xov sab hauv, tsim los txuas seamlessly nrog ib leeg.Thaum txuas SAE fittings, nws yog ib qho tseem ceeb kom phim cov txiv neej thiab poj niam cov khoom kom raug kom tsis txhob muaj kev sib tsoo thiab ua kom pom kev ua haujlwm zoo.
l SAE Txiv neej Connector : Sab nraud xov, siv nrog O-Ring Boss thiab flange clamp systems.
l SAE Poj Niam Connector : Internal xov, sib xws nrog txiv neej connectors thiab tsim los tsim kom muaj kev ruaj ntseg haum.
In-depth Analysis ntawm SAE 45 ° Flare Thread Dimensions
SAE 45 ° Flare Xov yog ib hom kev haum uas siv rau hauv ntau yam kev siv hydraulic.Nws qhov ntev yog tus qauv tsim kom muaj kev sib raug zoo thiab txhim khu kev qha.Lub 45-degree flare lub kaum ntse ntse yog qhov tseem ceeb vim nws tso cai rau cov hlau-rau-hlau sealing, nrog lub qhov ntswg flare ntawm tus txiv neej haum compressing tiv thaiv lub flared tubing ntawm tus poj niam haum.Qhov kev tsim no tshem tawm qhov xav tau ntxiv cov txheej txheem sealing zoo li PTFE (Polytetrafluoroethylene) daim kab xev lossis cov khoom sib txuas.
l Bolt Loj : Standardized rau siv nrog SAE J518 , DIN 20066 , ISO / DIS 6162 , thiab JIS B 8363.
l O Nplhaib : Qhov tseem ceeb rau kev tsim lub foob nrog Ncaj Xov O-Ring Boss fittings.
SAE 45 ° Flare - SAE J512 Xov Dimensions
MALE THOV OD & PITCH | DASH SIZE | TAG NRHO OD | poj niam THREAD ID | TUB SIZE |
inch - TPI |
| mm | nti | mm | nti | nti |
5/16–24 | -05 | 7.9 | 0.31 | 6.8 | 0.27 | 1/8 |
3/8–24 | -06 | 9.5 | 0.38 | 8.4 | 0.33 | 3/16 |
7/16 – 20 | -07 | 11.1 | 0.44 | 9.9 | 0.39 | 1/4 |
1/2 – 20 | -08 | 12.7 | 0.50 | 11.4 | 0.44 | 5/16 |
5/8–18 | -10 | 15.9 | 0.63 | 14.2 | 0.56 | 3/8 |
3/4–16 | -12 | 19.1 | 0.75 | 17.5 | 0.69 | 1/2 |
7/8–14 | -14 | 22.2 | 0.88 | 20.6 | 0.81 | 5/8 |
1.1/16 – 14 | -17 | 27.0 | 1.06 | 24.9 | 0.98 | 3/4 |
SAE 45º INVERTED FLARE - SAE J512 Xov Dimensions
MALE THOV OD & PITCH | DASH SIZE | MALE THOV OD | poj niam THREAD ID | TUB SIZE |
inch - TPI |
| mm | nti | mm | nti | nti |
7/16–24 : kuv | -07 | 11.1 | 0.44 | 9.9 | 0.39 | 1/4 |
1/2 – 20 | -08 | 12.7 | 0.50 | 11.4 | 0.45 | 5/16 |
5/8–18 | -10 | 15.9 | 0.63 | 14.2 | 0.56 | 3/8 |
11/16 – 18 | -11 | 17.5 | 0.69 | 16.0 | 0.63 | 7/16 |
SAE PILOT O RING SEALS Pilot Txiv neej Swivel Thread Dimensions
MALE THOV OD & PITCH | DASH SIZE | TAG NRHO OD | poj niam THREAD ID | TUB SIZE |
inch - TPI |
| mm | nti | mm | nti | nti |
5/8–18 | -10 | 15.9 | 0.63 | 14.2 | 0.56 | -6 |
3/4–18 | -12 | 19.0 | 0.75 | 17.8 | 0.70 | -8 |
7/8–18 | -14 | 22.2 | 0.88 | 20.6 | 0.81 | -10 |
Pilot Poj Niam Swivel Threads Dimensions
MALE THOV OD & PITCH | DASH SIZE | TAG NRHO OD | poj niam THREAD ID | TUB SIZE |
inch - TPI |
| mm | nti | mm | nti | nti |
5/8–18 | -10 | 15.9 | 0.63 | 14.2 | 0.56 | -6 |
3/4–16 | -12 | 19.0 | 0.75 | 17.5 | 0.69 | -8 |
3/4–16 | -12 | 19.0 | 0.75 | 17.5 | 0.69 | -8 |
Tshawb nrhiav NPT Xov
NPT Xov yog dab tsi?– Ib qho kev nthuav dav
NPT threads, los yog National Yeeb Nkab Tapered threads, yog ib hom ntsia hlau xov feem ntau siv rau sealing yeeb nkab pob qij txha.Qhov kev tsim no ua kom muaj kev sib txuas tsis pub dhau vim nws qhov profile tapered, uas tau nruj dua li qhov haum yog threaded rau hauv cov yeeb nkab.Lub taper tsim ib lub foob los ntawm squeezing threads ua ke, feem ntau txhim kho nrog daim ntawv thov ntawm PTFE daim kab xev los yog ib tug sealant compound los sau tej qhov khoob.
Paub meej NPT Xov Dimensions Daim Ntawv Qhia
Thaum cuam tshuam nrog NPT xov, kev ntsuas meej yog qhov tseem ceeb.Nov yog daim ntawv qhia yooj yim NPT xov qhov ntev:
NPT xov SIZE & PITCH | DASH SIZE | MALE THOV QHOV NO OD | poj niam THREAD ID |
inch - TPI |
| mm | nti | mm | nti |
1/8–27 : kuv | -02 | 9.9 | 0.39 | 8.4 | 0.33 |
1/4–18 | -04 | 13.2 | 0.52 | 11.2 | 0.44 |
3/8–18 | -06 | 16.6 | 0.65 | 14.7 | 0.58 |
1/2 – 14 | -08 | 20.6 | 0.81 | 17.8 | 0.70 |
3/4–14 | -12 | 26.0 | 1.02 | 23.4 | 0.92 |
1 – 11.1/2 | -16 | 32.5 | 1.28 | 29.5 | 1.16 |
1.1/4 – 11.1/2 | -20 | 41.2 | 1.62 | 38.1 | 1.50 |
1.1/2 – 11.1/2 | -24 | 47.3 | 1.86 | 43.9 | 1.73 |
2 – 11.1/2 | -32 | 59.3 | 2.33 | 56.4 | 2.22 |
2.1/2 – 8 | -40 | 71.5 | 2.82 | 69.1 | 2.72 |
3–8 | -48 | 87.3 | 3.44 | 84.8 | 3.34 |
NPT Threads nyob rau hauv Industrial Applications
NPT threads yog ib qho tseem ceeb hauv ntau qhov chaw lag luam.Lawv feem ntau pom muaj nyob rau hauv cov tshuab tuav hydraulic kua qhov twg yuav tsum muaj kev ruaj ntseg, siab-tight seal yog tsim nyog.NPT adapters yog siv los txuas cov hoses thiab cov kav dej sib txawv los yog hloov los ntawm lwm hom xov, xws li SAE xov hom, rau NPT.Thaum txuas SAE fittings, uas tej zaum yuav siv lub Straight Thread O-Ring Boss system, adapters kom compatibility nrog NPT-threaded Cheebtsam.
Txheeb xyuas NPT Thread Sizes thiab Standards
Txhawm rau txheeb xyuas NPT xov, koj yuav tsum paub ob qho tib si sab nraud thiab cov xov tooj ntawm ib nti.Nov yog phau ntawv qhia ceev:
1. Ntsuas cov kab sab nraud ntawm tus txiv neej xov los yog lub puab txoj kab uas hla ntawm tus poj niam xov.
2. Suav tus naj npawb ntawm cov xov peaks nyob rau hauv ib nti dav los txiav txim TPI.
3. Sib piv cov kev ntsuas no nrog tus qauv NPT daim ntawv qhia kom pom qhov sib thooj NPT loj.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias NPT threads yuav tsum muaj kev sib koom tes kom ua tiav qhov kev ruaj ntseg haum.Qhov no txhais tau hais tias cov txiv neej thiab poj niam threads yuav tsum tau screwed ua ke kom txaus los tiv thaiv cov xau, tab sis tsis nruj heev li ua rau kev puas tsuaj.
Kev sib piv ntawm SAE vs. NPT Xov
Xov Tsim: Ncaj vs. Tapered
Thaum kuaj xyuas SAE Xov Hom thiab NPT Xov, qhov sib txawv tseem ceeb tau tshwm sim hauv lawv cov qauv tsim.SAE threads, tshwj xeeb tshaj yog Straight Thread O-Ring Boss, yog tus cwj pwm los ntawm lawv cov qauv xov ncaj.Qhov kev tsim no tso cai rau kom muaj txoj kab uas hla zoo ib yam thoob plaws qhov ntev ntawm cov xov.Hauv qhov sib piv, National Pipe Tapered Threads (NPT) nthuav qhia cov kab xev, nqaim thaum lawv nce raws cov xov axis.
l SAE : Ncaj threads, uniform txoj kab uas hla.
l NPT : Tapered threads, txoj kab uas hla txo raws txoj xov.
Sealing Techniques: O-Ring vs. Taper thiab sealants
Sealing kev ncaj ncees yog qhov tseem ceeb hauv kev tiv thaiv cov xau.SAE Txiv neej Connector thiab SAE Poj Niam Connector feem ntau ntiav O-Ring los tsim ib lub foob.Lub O-Ring no zaum hauv qhov zawj thiab compresses thaum zawm, ua ib qho kev thaiv tiv thaiv kev xau.Lub caij no, cov qauv tsim ntawm NPT threads yuav tsum muaj kev sib txawv.Lub taper tso cai rau cov xov kom haum nruj dua li lawv tau screwed rau hauv, tsim kom muaj kev sib txuas ntawm dej.Txhawm rau txhim kho cov nyhuv no, PTFE (Polytetrafluoroethylene) daim kab xev los yog cov khoom sib txuas feem ntau yog siv rau NPT threads.
l SAE : Siv O-Ring rau kev sib khi.
l NPT : Cia siab rau cov qauv tsim tapered thiab cov sealants ntxiv rau kev sib txuas tsis muaj dej.
Qhov Zoo Tshaj Plaws: Thaum Yuav Siv SAE lossis NPT
Kev xaiv ntawm SAE thiab NPT fittings feem ntau nyob ntawm daim ntawv thov tshwj xeeb thiab cov qauv kev lag luam.SAE J514 raj fittings yog dav siv nyob rau hauv hydraulic systems vim lawv muaj zog sealing mechanisms thiab muaj peev xwm tiv taus siab.Lawv tau tsim los ua kom tau raws li cov qauv xws li SAE J518, DIN 20066, ISO / DIS 6162, thiab JIS B 8363. Cov fittings no zoo tagnrho rau kev tsim kom muaj kev sib raug zoo thaum tswj cov kua dej hydraulic.
NPT fittings, ntawm qhov tod tes, feem ntau pom muaj nyob rau hauv cov kav dej thiab cua tshuab.American National Standard Pipe Thread (ANSI/ASME B1.20.1) yog ib qho qauv zoo rau cov xov tapered no.NPT adapters haum rau cov ntawv thov uas tsis tsim nyog cov xov ncaj lossis qhov uas siv O-Ring tsis ua tau.
l SAE : Txaus siab rau cov tshuab hydraulic siab.
l NPT : Feem ntau hauv cov kav dej thiab kev siv qis qis.
Kev coj ua zoo tshaj plaws rau kev txhim kho SAE thiab NPT Threaded Fittings
Thaum txuas SAE fittings, precision yog qhov tseem ceeb.Pib los ntawm kev xaiv qhov tseeb SAE Txiv neej Connector lossis SAE Poj Niam Connector.Ua kom muaj kev sib raug zoo nrog cov qauv zoo li SAE J518, DIN 20066, lossis ISO/DIS 6162. Rau kev ruaj ntseg haum, siv O-ring thiab flange clamp.Teem lub bolt qhov ntau thiab tsawg nrog cov specifications kom tsis txhob stripping threads.
NPT xov txuas, tswj hwm los ntawm ANSI/ASME B1.20.1, xav tau txoj hauv kev sib txawv.Thov PTFE daim kab xev los yog ib lub sealant haum rau MPT los xyuas kom meej lub sealing sealing vim lawv cov qauv tapered.Tsis txhob nruj dhau;nws tuaj yeem ua rau tawg lossis deform cov xov.
Kev tu thiab daws teeb meem ntau yam teeb meem
Kev kuaj xyuas tsis tu ncua yog qhov tseem ceeb rau cov tshuab hydraulic.Saib rau cov cim ntawm hnav ntawm SAE J514 raj fittings thiab NPT adapters.Yog tias muaj dej xau, tshuaj xyuas O-Ring Boss thiab hloov nws yog tias puas lawm.Rau NPT xov teeb meem, xyuas seb PTFE daim kab xev xav tau rov qab thov dua.Ib txwm muaj cov khoom siv tu kom zoo nrog cov khoom seem O-rings, sealant compound, thiab PTFE daim kab xev.
Ua kom lub neej ntev thiab ua haujlwm tau zoo hauv Hydraulic Systems
Yuav kom tswj tau qhov system ncaj ncees, ua raws li cov kauj ruam no:
1. Siv cov kua hydraulic kom raug.
2. Teem sijhawm soj ntsuam tas li ntawm txhua qhov kev sib txuas.
3. Hloov cov khoom hnav tam sim ntawd.
4. Khaws cov yeeb nkab thiab cov yeeb nkab fittings kom huv si ntawm cov khib nyiab.
5. Saib xyuas kev hloov pauv hauv qhov system ua haujlwm.
Los ntawm kev ua raws li cov lus qhia no, koj tuaj yeem ua kom tsis muaj kev sib txuas thiab ua kom lub neej ntawm koj lub tshuab hydraulic.Nco ntsoov, txoj cai SAE Xov Hom lossis NPT Xov Xaiv tuaj yeem ua rau txhua qhov sib txawv hauv kev tsim cov ntsaws ruaj ruaj ruaj khov, kav ntev.
Xaus
Peb tau tshawb nrhiav cov nuances ntawm SAE thiab NPT xov.Rau recap, SAE threads yog tsim rau hydraulic systems, featuring ib tug ncaj xov nrog ib tug O-ring rau sealing.SAE Txiv neej Connector thiab SAE Poj Niam Connector ua si lub luag haujlwm tseem ceeb hauv kev ua kom tsis muaj kev sib txuas.Ntawm qhov tod tes, NPT threads, los yog National Pipe Tapered threads, muaj ib tug tapered tsim uas tsim ib lub foob los ntawm qhov nruj ntawm haum, feem ntau txhim kho nrog PTFE daim kab xev los yog sealant compound.
Kev nkag siab txog qhov sib txawv yog qhov tseem ceeb.SAE Xov Hom, xws li Ncaj Xov O-Ring Boss pom nyob rau hauv SAE J514 raj fittings, cia siab rau O-ring los tsim kom muaj kev ruaj ntseg foob.Contrastingly, NPT threads, ua raws li ANSI / ASME B1.20.1, tsim ib lub foob los ntawm kev cuam tshuam ntawm cov xov.
Xaiv hom xov zoo tsis tuaj yeem overstated.Kev tsis sib haum xeeb tuaj yeem ua rau cov dej xau, kev cuam tshuam cov kab ke, thiab nce sijhawm poob.Piv txwv li, thaum txuas SAE fittings mus rau lub hydraulic system, xyuas kom meej compatibility nrog cov qauv xws li SAE J518, DIN 20066, ISO / DIS 6162, los yog JIS B 8363. Cov qauv no hais txog qhov ntev, nrog rau qhov ntau thiab tsawg thiab flange clamp, kom ntseeg tau tias ib ruaj ntseg thiab haum haum.
Hauv thaj tsam ntawm hydraulic fittings, SAE Xov Hom feem ntau cuam tshuam nrog O-Ring Boss kev sib txuas, thaum NPT xov yog muaj nyob rau hauv cov kav dej dav siv.Thaum siv NPT adapters nyob rau hauv ib qho system tsim rau SAE cov qauv, nco ntsoov txog cov txheej txheem sib khi sib txawv.Lub O-ring muab kev sib txuas dej tsis tu ncua hauv SAE systems, qhov kev tsim tapered hauv NPT systems yuav tsum tau ceev faj kev sib koom tes kom ua tiav qhov kev sib txuas tsis muaj xau.
Hauv kev xaus, kev ncaj ncees ntawm koj cov kev sib txuas - txawm hais tias lawv koom nrog cov kav dej, cov yeeb nkab fittings, lossis hydraulic fittings - hinges ntawm kev txheeb xyuas kom raug thiab siv SAE Xov Hom lossis NPT Xov.Ib txwm xa mus rau cov qauv kev lag luam, zoo li cov lus hais, los coj koj xaiv.Nco ntsoov, hom xov zoo tsis tsuas yog ua kom muaj kev ruaj ntseg zoo nkaus xwb tab sis kuj tswj kev ua haujlwm thiab kev nyab xeeb ntawm koj lub cev tag nrho.
