PEX (crosslinked polyethylene) piping tau nrov rau cov kav dej ua tsaug rau nws cov kav ntev, hloov tau, thiab tus nqi qis. Txawm li cas los xij, txhawm rau sib sau ua ke PEX cov kav dej, cov neeg tsim khoom yuav tsum xaiv los ntawm ntau yam ntawm PEX yeeb nkab fittings thiab hom kev sib txuas los koom nrog cov kav dej, hloov cov lus qhia thiab hloov mus rau ntau qhov sib txuas. Nrog rau ntau txoj kev xaiv muaj, xaiv txoj cai PEX yeeb nkab fittings rau ib daim ntawv thov tuaj yeem nyuaj.
Cov lus qhia dav dav no muab txoj hauv kev rau kev xaiv PEX yeeb nkab fittings. Peb yuav txheeb xyuas hom PEX fittings, lawv lub hom phiaj, thiab lawv qhov zoo / qhov tsis zoo. Peb tshawb nrhiav qhov sib txawv ntawm crimp, compression, thiab expansion PEX kev sib txuas. Peb sib piv cov ntaub ntawv xws li tooj dag, tooj liab, thiab yas. Peb muab sizing kab kos kom phim PEX tubing thiab fittings. Peb kuj muab cov lus qhia rau PEX cov kav dej tsim kom txo qis kev siv. Peb lub hom phiaj yog ua kom yooj yim rau PEX yeeb nkab haum xaiv txheej txheem rau DIYers thiab cov tub txawg ib yam nkaus kom ua tiav cov kav dej zoo.
Hom PEX Yeeb Nkab Fittings
Thawj kauj ruam hauv kev xaiv haum yog nkag siab txog ntau hom muaj:
- Lub luj tshib: tso cai rau cov kav dej hloov cov lus qhia ntawm 90 lossis 45-degree kaum. Siv qhov twg PEX yeeb nkab tsis tuaj yeem khoov tau yooj yim.
- Tees: Muab cov yeeb nkab ib leeg rau hauv ob ceg sib cais. Ua raws li cov yeeb nkab loj hloov pauv.
- Couplings: Koom nrog ob daim ntawm PEX yeeb nkab ua ke kawg mus rau qhov kawg. Siv los txuas cov yeeb nkab mus rau qhov xav tau ntev.
- Caps: Kaw qhov kawg ntawm cov yeeb nkab qhib rau ntsaws lossis kuaj. Yuav tsum tau tshem tau.
- Adapters: Kev hloov pauv ntawm cov kav dej sib txawv lossis nruab nrab ntawm PEX thiab lwm hom yeeb nkab. Tso cai rau kev sib txuas nrog cov khoom siv tsis yog PEX kav dej.
- Manifolds: Muab ntau qhov chaw nres nkoj rau txuas cov yeeb nkab ceg mus rau hauv nruab nrab lub cev kab. Simplifies cov kav dej layouts.
- Valves: Tswj dej ntws kev taw qhia, tus nqi, lossis kaw. Cov hom muaj xws li pob li qub, nres li qub, cov dej ntws tawm, thiab tswj cov khoom siv rau cov khoom siv thermostatic.
Cov pawg haum no xyuas kom cov neeg tsim khoom muaj cov khoom tsim nyog los ua kom tiav ib qho chaw nyob lossis kev lag luam kav dej siv PEX. Kev xaiv ntawm cov kev xaiv los mus rau qhov loj me, kev ua tau zoo, thiab kev sib txuas ntawm txhua daim ntawv thov.
Hom kev sib txuas: Xaiv Crimp vs. Compression vs. Expansion
Qhov kev xaiv tseem ceeb tom ntej yog txiav txim siab txoj hauv kev zoo tshaj plaws los txuas PEX cov kav dej thiab fittings: crimp, compression, lossis expansion. Txhua tus muaj qhov tshwj xeeb pros thiab cons:
Crimp: Crimp rings lossis bands foob hla qhov sib txuas ntawm cov yeeb nkab thiab haum. Ib txhais tes lossis hydraulic crimping cuab yeej yog siv los nyem lub nplhaib kom nruj thiab tsim kom muaj huab cua nruj. Pros muaj xws li ceev, tus nqi qis, thiab durability. Txawm li cas los xij, yuav tsum muaj cov cuab yeej tshwj xeeb thiab kev sib txuas tsis tuaj yeem thim rov qab. Crimping kuj txo cov yeeb nkab txoj kab uas hla me ntsis.
Compression: Ib feem ntawm qhov haum protrudes rau hauv cov yeeb nkab, tsim ib lub foob thaum nruj nrog cov txiv ntseej thiab ntxhua khaub ncaws. Pros muaj xws li reusability thiab tsis muaj cov cuab yeej tshwj xeeb xav tau. Txawm li cas los xij, compression fittings zoo li yuav kim dua thiab siv sij hawm los txhim kho dua li crimps. Lawv kuj protrude rau hauv cov yeeb nkab, me ntsis txo ntws.
Kev nthuav dav: PEX yeeb nkab kawg tau nthuav dav ua ntej tso rau hauv qhov haum. Thaum tso tawm, cov yeeb nkab sim rov qab mus rau qhov loj, tsim kom muaj lub foob kaw ntom nti. Pros muaj xws li ceev thiab huab cua nruj seals. Txawm li cas los xij, yuav tsum muaj cov cuab yeej nthuav dav tshwj xeeb. Txoj kev no ua haujlwm zoo tshaj plaws ntawm PEX-a (chlorination) yeeb nkab uas muaj peev xwm rov qab mus rau qhov loj me.
Kev xaiv ntawm cov hom kev sib txuas no nyob ntawm qhov tseem ceeb rau tus nqi piv rau kev rov siv dua, cov cuab yeej muaj, cuam tshuam rau kev khiav, ncua sij hawm nruab, thiab PEX piping hom. Tsis muaj ib qho kev xaiv zoo rau txhua daim ntawv thov. Kev xav los ntawm kev xaiv raws li qhov xwm txheej yuav ua rau txoj kev sib txuas zoo tshaj plaws rau txhua qhov PEX haum.
Brass vs. Copper vs. Yas PEX Fittings: Sib piv cov ntaub ntawv
PEX yeeb nkab fittings muaj nyob rau hauv ntau yam ntaub ntawv:
- Brass: Durable, corrosion-resistant, thiab pheej yig. Ua haujlwm nrog txhua hom PEX. Muaj peev xwm leaching txaus ntshai rau cov dej haus txhais tau tias tooj dag PEX fittings yuav tsum ua tau raws li cov qauv kav dej.
- Copper: Yuav luag zoo li tooj dag tab sis kim dua. Yuav tsis tso tshuaj lom. Ua haujlwm zoo tshaj plaws rau cov dej kub thiab dej txias PEX cov kav dej. Yooj yim rau corrosion nyob rau hauv acidic los yog alkaline ib puag ncig.
- Yas (ABS, PVC, CPVC): Lub teeb yuag, tsis muaj corrosive thiab pheej yig. ABS thiab PVC fittings ua haujlwm rau kev siv dej thiab qhov cua, tab sis tsis yog cov kav dej kub. CPVC tau ntsuas rau cov dej haus tab sis tuaj yeem ua rau lub sijhawm tawg. Ntau dua rau kev tawg piv rau cov hlau.
- Stainless Hlau: Cov khoom siv ruaj khov thiab corrosion-resistant tab sis qhov kev xaiv kim tshaj plaws. Ua haujlwm rau txhua daim ntawv thov PEX suav nrog kev kub siab lossis cov kav dej hauv hiav txwv. tuaj yeem khawb PEX yeeb nkab yog tias tsis sib txuas zoo.
- Polypropylene: Lub teeb yuag, tsis muaj corrosive yas haum rau cov kuab tshuaj thiab tshuaj. Pheej yig tab sis muaj kev ntsuas qis dua li cov hlau fittings. Siv rau lub ntiajteb txawj nqus ntws ntws, venting, thiab ib co qis-pressure kav dej qhov twg cov cai tso cai.
Rau feem ntau tus qauv PEX kav dej, tooj dag, tooj liab, lossis stainless hlau fittings yog cov kev xaiv zoo. Cov kev xaiv yas tuaj yeem haum rau qee qhov kev siv tsawg tab sis yuav tsum tau ua kom zoo siab thiab tau lees paub rau cov qauv kev nyab xeeb rau cov dej haus. Sib piv qhov zoo, qhov tsis zoo, thiab cov nqi yuav txiav txim siab cov khoom haum rau koj qhov project PEX xav tau.
PEX Fitting thiab Pipe Sizing
Thaum nws los txog rau PEX kav dej, sizing fittings kom zoo yog qhov tseem ceeb raws li kev xaiv lawv hom thiab kev sib txuas txoj kev. Kev nkag siab txog qhov loj me ntawm cov lus pom zoo thiab ua kom zoo sib xws PEX tubing diameters nrog qhov ntev haum kom tsis txhob muaj cov nqi ntws tsis zoo, xau lossis cov yeeb nkab tawg.
PEX tubing siv nominal yeeb nkab sizing (NPS) los qhia cov yeeb nkab sab hauv. Yog li 1/2 "PEX nominally txhais tau hais tias nyob ib ncig ntawm 1/2" puab txoj kab uas hla. PEX tubing qhov ntau thiab tsawg ntawm 1/4 "mus txog 2" rau feem ntau cov vaj tse thiab kev lag luam kav dej. Raws li cov yeeb nkab txoj kab uas hla nce, yog li ua qhov siab tshaj plaws ntws thiab ntim dej ntim.
Meanwhile, PEX yeeb nkab haum sizing hais txog cov txheej kab ntawm cov kav dej nws tuaj yeem koom nrog. 1/2 "PEX luj tshib haum yuav ua hauj lwm nrog ib tug nominal 1/2" PEX yeeb nkab, thiab ib tug 3/4" compression PEX coupling yuav haum 3/4 "tubing. Kev sib piv cov qib no ua kom cov fittings koom nrog zoo yam tsis muaj qhov xau, txawm hais tias qhov tshwj xeeb sab hauv / sab nrauv yuav txawv me ntsis ntawm PEX thiab haum.
Qhov tseem ceeb tshaj plaws, ua kom tau txais txiaj ntsig zoo los ntawm kev xaiv cov tubing thiab qhov loj me uas ua kom cov dej nrawm ntawm 2 mus rau 5 feet ib ob. Qhov no muab txaus ntim thiab siab rau fixture xav tau yam tsis muaj suab nrov heev los yog lub zog poob. Nrog rau cov kav dej sizing rooj xaiv qhov ntev kom txaus siab tus nqi txaus rau txhua ntu ntawm PEX yeeb nkab hauv qhov system.
Qhov zoo ntawm cov kav dej slopes kuj tseem ua rau sizing rau ntws. Pitch kab rov tav PEX cov kav dej tsawg kawg yog 1/4 nti ib ko taw rau ntu txog li 75 feet ntev. Ua kom txoj kab nqes kom ntev dua cov kav dej. Ib txoj kab nqes hav pab cov dej khib nyiab thiab cov kua dej txav mus los ntawm tus nqi xav tau.
Tsawg Fittings hauv PEX Cov kav dej tsim tsim
Thaum fittings ua lub hom phiaj tseem ceeb, ua kom zoo dua PEX cov kav dej tsim siv ob peb lub fittings raws li qhov ua tau ua kom muaj txiaj ntsig zoo tshaj plaws thiab txo cov nqi thiab qhov chaw xau:
- Muab ntau yam khoom siv da dej me me rau hauv lub voj voog khiav hauv tsev kom tsis txhob muaj cov pob qij txha ntau dhau.
- Siv PEX yeeb nkab yam tsawg kawg nkaus khoov vojvoog rau koj qhov kom zoo dua rau cov yeeb nkab nkhaus nyob ib ncig ntawm cov ces kaum lossis cov teeb meem tsis yog kev txiav thiab haum kom hloov cov lus qhia.
- Rau cov kav dej ntev rau cov dab dej lossis cov tub rau hauv pem teb, khiav ncaj nraim ntev ntawm PEX los ntawm hauv qab mus rau saum toj es tsis txhob txiav cov kab rov tav fittings.
- Qhov twg yuav tsum tau hloov cov yeeb nkab qhov ntau thiab tsawg, ua li ntawd ntawm qhov chaw ze tshaj plaws rau qhov xav tau qhov chaw es tsis yog ntawm cov khoom siv manifold. Qhov no yog tshwj xeeb tshaj yog muaj txiaj ntsig zoo rau kev ntxhua khaub ncaws lossis lwm yam kev xav tau siab.
- Rau radiant pem teb cua sov, siv manifolds hloov nyob rau hauv kab thiab hloov voj kev taw qhia es tsis txhob txiav yeeb nkab. Qhov no ua rau lub voj voog ywj pheej thiab tsis cuam tshuam rau kev sib npaug.
- Thaum kwv yees cov ntaub ntawv, ntxiv ib ncig ntawm 15 feem pua ntawm PEX tubing ntxiv rau kev txiav kom ntev. Qhov no zam dhau los luv luv, uas yuav tsum muaj kev koom nrog ntxiv mus ntxiv. Cov yeeb nkab ntau dua yog tus nqi qis dua li cov fittings ntau dua.
Cov kav dej thiab cov kav dej yuav tsis yog kev tsim txuj ci, tab sis siv kev muaj tswv yim thiab xav txog ib kauj ruam ua ntej txog kev txo cov kev sib txuas thiab kev ua haujlwm ncaj qha ua rau muaj qhov huv, tsis muaj teeb meem PEX. Daws ntau dua nrog cov yeeb nkab thiab fittings qhov twg ua tau rau kev txhim kho zoo uas them taus ob qho tib si thiab kev ua haujlwm.
Xaiv PEX yeeb nkab fittings yuav tsum hnyav ntau yam kev lag luam tawm ntawm tus nqi, ntws, sib xws, thiab kev ntseeg siab rau txhua daim ntawv thov. Tab sis los ntawm kev ua kom haum raws li kev xaiv - txheeb xyuas hom, kev sib txuas, cov khoom siv, thiab qhov loj me - cov neeg teeb tsa tuaj yeem xaiv cov kev xaiv tau zoo thiab txiav txim siab paub txog cov txiaj ntsig zoo. Nrog rau kev tsim cov kav dej zoo thiab lub siab me me uas txo qis kev sib txuas ntxiv, DIYers thiab cov kws tshaj lij tuaj yeem tsim cov tshuab PEX zoo nkauj, ua haujlwm siab uas yuav ua rau lub neej ntev siv ob peb fittings li sai tau thiab ua kom cov hydraulics siab tshaj plaws. Kev xaiv kom zoo thiab tsim kev xav zoo tso cai rau cov khoom siv hluav taws xob pheej yig no kom ua tiav cov kev xav tau zoo. PEX lub koob npe nrov nyob ntawm kev saib xyuas kom meej ntawm txhua qhov kev sib koom ua ke tshawb fawb hauv phau ntawv qhia haum rau kev xa dej ntawm tag kis.
