90 ° poj niam threaded luv txoj kab uas hla lub luj tshib poj niam threaded luv luj tshib
Qhov tseem ceeb tshaj plaws thaum ua hauj lwm nrog PVC yeeb nkab thiab fittings yog qhov nominal loj.A 1 "fitting yuav haum rau ntawm 1" yeeb nkab, tsis hais seb ib qho twg yog lub sijhawm 40 lossis 80. Yog li, thaum lub 1 "socket haum haum muaj qhov qhib dav dua 1" hla, nws yuav haum rau 1" yeeb nkab vim tias OD ntawm cov yeeb nkab no kuj muaj ntau dua 1 ".
Tej zaum yuav muaj sijhawm thaum koj xav siv PVC haum nrog cov yeeb nkab uas tsis yog PVC.Qhov nominal loj, qhov no, tsis tseem ceeb npaum li OD ntawm cov yeeb nkab koj siv.Raws li ntev raws li OD ntawm cov yeeb nkab yog tib yam li lub puab txoj kab uas hla (ID) ntawm qhov haum nws mus rau hauv, lawv yuav sib xws.Txawm li cas los xij, 1 "fitting thiab 1" carbon steel yeeb nkab yuav tsis sib haum rau ib leeg vim lawv muaj qhov loj me me.Nco ntsoov ua koj qhov kev tshawb fawb ua ntej siv nyiaj ntawm qhov chaw uas yuav tsis sib haum!
Yog tsis muaj cov nplaum, PVC yeeb nkab thiab fittings yuav haum ua ke heev snugly.Txawm li cas los xij, lawv yuav tsis muaj dej khov.Yog tias koj yuav muaj cov kua dej hla koj cov yeeb nkab, koj yuav tsum xyuas kom meej tias yuav tsis muaj qhov xau.Muaj ntau ntau txoj hauv kev los ua qhov no, thiab txoj kev koj xaiv yuav nyob ntawm seb koj tab tom txuas dab tsi.
PVC yeeb nkab nws tus kheej tsis feem ntau muaj threaded xaus.Qhov no tsuas yog ib qho laj thawj uas feem ntau PVC fittings muaj qhov xaus."Slip" hauv PVC tsis txhais hais tias kev sib txuas yuav nplua, tab sis qhov haum yuav plam txoj cai hla cov yeeb nkab.Thaum muab cov yeeb nkab rau hauv ib qho kev sib tsoo, qhov kev sib txuas yuav zoo li nruj, tab sis txhawm rau thauj cov kua dej tawm, nws yuav tsum tau muab kaw.PVC cement seals yeeb nkab los ntawm cov tshuaj tiv thaiv uas khi cov yas ntawm ib feem mus rau lwm qhov.Txhawm rau kom tau txais kev lees paub ntawm kev sib tsoo, koj yuav xav tau ob qho tib si PVC primer thiab PVC cement.Lub primer softens sab hauv ntawm lub haum, npaj nws mus rau kev sib raug zoo, thaum lub cement ua rau ob daim daig ua ke nruj.
Threaded fittings yuav tsum tau muab sib khi sib txawv.Lub ntsiab yog vim li cas tib neeg siv threaded qhov chaw yog li ntawd lawv thiaj li muab sib cais yog tias tsim nyog.PVC cement bonds yeeb nkab ua ke, yog li yog tias nws siv rau ntawm cov pob qij txha, nws yuav ua rau lub foob, tab sis cov xov yuav tsis muaj txiaj ntsig.Ib txoj hauv kev zoo los kaw cov pob qij txha thiab ua kom lawv ua haujlwm yog siv PTFE xov foob daim kab xev.Cia li qhwv nws nyob ib ncig ntawm tus txiv neej threads ob peb zaug thiab nws yuav khaws cov kev sib txuas kaw thiab lubricated.Thiab yog tias koj xav rov qab los rau qhov kev sib koom ua ke rau kev saib xyuas, cov fittings tseem tuaj yeem ua kom tsis muaj hau.
Feem ntau peb cov neeg muas zaub nug peb, "Dab tsi yog qhov txawv ntawm cov rooj tog qib fittings thiab fittings li niaj zaus?"Cov lus teb yog yooj yim zoo nkauj: peb cov rooj tog qib fittings tsis muaj chaw tsim tshuaj paus luam ntawv lossis bar codes.Lawv yog cov dawb huv los yog dub tsis muaj dab tsi luam tawm ntawm lawv.Qhov no ua rau lawv zoo rau cov ntawv thov uas cov yeeb nkab yuav pom, txawm tias nws yog tiag tiag rau rooj tog.Qhov ntau thiab tsawg yog tib yam li qhov ntau thiab tsawg haum.Piv txwv li, 1 "cov rooj tog zaum qib haum thiab 1" tsis tu ncua haum yuav haum rau ntawm 1" yeeb nkab. Tsis tas li ntawd, lawv tsuas yog ruaj khov li peb cov khoom siv PVC.
Hauv qab no yog cov npe ntawm qee qhov feem ntau siv PVC fittings muaj.Txhua qhov nkag muaj cov lus piav qhia ntawm qhov haum nrog rau kev siv tau thiab kev siv rau nws.Yog xav paub ntxiv txog ib qho ntawm cov fittings no, mus saib lawv cov nplooj ntawv khoom.Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias txhua qhov haum muaj ntau qhov ntau ntawm cov khoom siv thiab kev siv, yog li nco ntsoov thaum yuav khoom rau fittings.
PVC tees yog ib qho haum nrog peb kawg;ob leeg nyob rau hauv ib txoj kab ncaj nraim thiab ib sab ntawm lub kaum sab xis ntawm 90-degree.Tees tso cai rau ib txoj kab sib cais ua ob kab sib cais nrog 90-degree kev sib txuas.Tsis tas li, tees tuaj yeem txuas ob kab rau hauv ib txoj kab tseem ceeb.Lawv kuj feem ntau siv rau cov qauv PVC.Tees yog ib qho khoom siv sib txawv heev uas yog qee qhov feem ntau siv hauv cov kav dej.Feem ntau cov tees muaj lub qhov (slip) xaus, tab sis threaded versions muaj.
