Raws li ib tug neeg kav dej raws caij nyoog, kuv feem ntau nug los ntawm cov tswv tsev thiab cov neeg tsim khoom rau cov lus qhia ntawm kev xaiv cov yeeb nkab PEX zoo tshaj plaws rau cov haujlwm. Thaum tag nrho cov PEX tubing ua haujlwm tseem ceeb ntawm kev xa dej yooj yim, cov khoom tuaj yeem sib txawv raws li kev tsim thiab kev tsim khoom. Hauv phau ntawv qhia no, Kuv yuav muab cov ntsiab lus tsis txaus ntseeg ntawm PEX cov yeeb nkab xaiv tseem ceeb suav nrog cov qib yeeb nkab, kev txiav txim siab qhov ntev, thiab kev ua haujlwm sib txawv ntawm PEX-A, PEX-B, thiab PEX-C los txhawb kev txiav txim siab. Peb tseem yuav tshawb xyuas seb daim ntawv thov tshwj xeeb los ntawm cov tsev nyob mus rau kev lag luam cuam tshuam cov khoom siv. Kuv lub hom phiaj yog txhawm rau txhim kho cov neeg nyeem nrog kev paub sab hauv los xaiv qhov zoo tshaj plaws PEX tubing khoom rau lawv cov kev xav tau tshwj xeeb.
PEX Tubing Background
Ua ntej, ceev PEX txheej txheem cej luam rau cov ntsiab lus. PEX stands rau cross-linked polyethylene, ib tug tshwj xeeb yas yeeb nkab rooj sib tham ASTM F876 thiab F877 cov qauv rau kav dej thiab radiant cua sov systems. Nws tau tshaj tawm hauv xyoo 1960 tab sis tau txais txiaj ntsig thoob plaws hauv xyoo 1990 los ua lwm txoj hauv kev hlau. Cov yam ntxwv tseem ceeb:
- Cov yas hloov tau yooj yim tsis zoo li tooj liab thiab galvanized hlau
- Yooj yim thawb-haum, crimp, compression, lossis expansion txuas
- Yooj yim rau DIYers rau nruab vs soldering lossis threading
- Cov hom tseem ceeb yog PEX-A, PEX-B, thiab PEX-C nrog cov khoom sib txawv
- Qhov ntau thiab tsawg los ntawm 1⁄4 "mus rau 2" rau cov ntawv thov nyob
- Cia siab tias yuav muaj 50 ntxiv rau lub neej nrog kev txhim kho kom raug
- Resistant corrosion thiab scale tsub zuj zuj
Nrog nws kev sib xyaw ua ke ntawm kev ua haujlwm ntev, kev ua haujlwm ntev, thiab kev yooj yim installation, PEX tau dhau los ua cov khoom siv kav dej saum toj kawg nkaus. Tab sis xaiv qhov zoo tagnrho formulation thiab loj teeb meem.
PEX Tubing Qib Sib Piv
Cov qauv PEX tseem ceeb suav nrog:
PEX-A:
- Tsim siv txoj kev Engel rau peroxide crosslinking.
- Qhov siab tshaj plaws ntawm crosslinking ua rau nws cov cua sov tshaj plaws, tshuaj, thiab tshuaj chlorine resistant.
- Nrog rau 200 degree F sib quas ntus thiab 180 degree F nruam raug.
- Zoo heev khov-thaw durability thiab abrasion tsis kam.
- Qib hwm PEX tau pom zoo rau cov khoom siv hluav taws xob tseem ceeb.
- Kev nyiam rov qab mus rau qhov loj me tom qab khov kev nthuav dav pab tiv thaiv cov kab nrib pleb.
- Feem ntau yog qib PEX kim tshaj plaws.
PEX-B:
- Siv silane rau tshuaj crosslinking thaum extrusion.
- Qib nruab nrab ntawm crosslinking muab tus nqi sib npaug.
- Tsim kom muaj txog li 180 degree F sib quas ntus thiab 140 degree F txuas ntxiv raug.
- Zoo khov kav ntev txawm tias me ntsis tsawg dua PEX-A.
- Cov khoom siv dav dav tshaj plaws PEX rau cov kav dej hauv tsev thiab cov cua sov radiant.
- Muab cov tshuaj chlorine zoo.
- Tus nqi qis dua PEX-A. Qib theem pib rau PEX kav dej.
PEX-C:
- Siv cov hluav taws xob hluav taws xob hluav taws xob los ua kom muaj kev sib txuas sib txuas tom qab extrusion.
- Qib qis tshaj ntawm crosslinking tab sis tseem tsim nyog rau qee qhov kev siv.
- Rau kev sib cuam tshuam tsuas yog mus txog 150 degree F rau lub sijhawm luv.
- Yooj yim khov tiv thaiv txawm tias tsawg dua PEX-A / B.
- Feem ntau cov qib PEX pheej yig tab sis rau kev siv tsawg.
- Feem ntau yog npaj rau cov cua kub uas tsis tshua muaj hluav taws xob hauv pem teb thiab cov tubing faib.
- Tsis pom zoo rau cov kav dej uas muaj cov kav dej.
Qhov kev xaiv qib yog nyob ntawm qhov kub, siab, thiab kev cia siab ntawm cov dej haus. Siv PEX-A rau kev sib txuas tseem ceeb xws li cov khoom siv kub-txias tseem ceeb. Txuag PEX-C rau qhov tsis tseem ceeb hauv pem teb cua sov loops nkaus xwb. Thiab xaiv PEX-B ua qhov nruab nrab zoo siab rau feem ntau qhov kev xav tau nruab nrab. Kev sib txuam ua tau zoo rau cov ntawv thov txwv tsis pub muaj teeb meem.
Kev txiav txim siab Dimension
Dhau li formulation, qhov ntev tseem ceeb heev. PEX siv nominal sizing tab sis qhov tseeb qhov ntev sib txawv me ntsis:
{{0}}}⁄4" PEX muaj 0.25" hauv kab (ID) thiab 0.375" sab nraud txoj kab uas hla (OD)
{{0}}}⁄8" PEX muaj 0.375" ID thiab 0.500" OD
{{0}}}⁄2" PEX muaj 0.500" ID thiab 0.625" OD
{{0}}}⁄4" PEX muaj 0.750" ID thiab 0.875" OD
- 1" PEX muaj 1.00" ID thiab 1.125" OD
Saib OD thaum txuas fittings, uas siv nominal sizing. Thicker yeeb nkab phab ntsa txo tus ID, cuam tshuam ntws, yog li loj tuaj raws li. Copper tubing OD thiab ID yog zoo tib yam yog li tib qhov loj me tuaj yeem muaj PEX ntws qis dua hauv qee qhov xwm txheej.
Tsis tas li ntawd, paub meej tias qhov ntsuas siab ntawm PEX tubing tau xaiv raws li daim ntawv thov xav tau. 160psi thiab 200psi yog ib txwm muaj rau tsev nyob. Kev lag luam siab dua xav tau qib siab dua.
Thaum kawg, xav txog kev xaiv coil ntev. PEX muaj nyob rau ntawm spools ntawm 100 mus rau tshaj 1000 ft. Ntev coils txo cov splices xav tau piv rau luv luv. Yuav tsuas yog yam koj xav tau kom tsis txhob pov tseg.
Kev xav txog kev ua haujlwm
Tshaj qhov ntsuas qhov sib txawv, tubing khoom tseem ceeb:
- Kub Cycling - PEX-A muaj qhov siab tshaj plaws elasticity thiab nco los tiv thaiv brittleness tom qab rov ua cua sov thiab cua txias.
- Flow Rate - Loj PEX diameters thiab nyias phab ntsa muab qhov zoo tshaj plaws ntws. Tab sis saj zawg zog PEX muaj ntau lub taub hau poob dua li tooj liab. Loj raws li.
- Kev Tiv Thaiv Kev Ruaj Ntseg - PEX tiv taus cov kab mob zoo dua li cov ntaub ntawv nruj. Tab sis kev tsim qauv tsim nyog tseem yog qhov tseem ceeb.
- Tshuaj Tiv Thaiv - PEX-A muaj qhov zoo tshaj plaws tiv thaiv kev txhoj puab heev xws li chloramines lossis acids uas tawm tsam lwm yam yas thiab roj hmab.
- Fatigue Resistance - PEX-A tiv thaiv cov qauv kev ntxhov siab xws li khoov, flexing, thiab kev co zoo tshaj plaws mus sij hawm ntev.
Ua raws li qhov xav tau ntawm txhua yam, thermal, tshuaj, thiab hydraulic tej yam kev mob steers xaiv PEX zoo rau txhua daim ntawv thov. Ib yam khoom tsis tuaj yeem haum txhua qhov xwm txheej.
Pom zoo PEX Cov Lus Qhia Xaiv
Nrog ntau qhov kev xaiv sib tshuam, ntawm no yog kuv txoj cai-ntawm-tus ntiv tes xoo cov lus qhia xaiv cov khoom:
- Cov dej kub / txias: PEX-A rau qhov zoo tshaj plaws durability thiab tshuaj tiv thaiv.
- Radiant Floor Heat: PEX-B rau qhov sib npaug ntawm tus nqi thiab kev ua haujlwm.
- Recirculating Kab: PEX-B yam tsawg kawg nkaus rau qhov kub thiab txias dua.
- Corrosive Dej: PEX-A rau kev tiv thaiv tshuaj lom neeg zoo tshaj plaws.
- DIY Plumbing: PEX-B, yooj yim rau amateurs dua PEX-A nthuav.
- Cov kav dej ua lag luam: PEX-B yam tsawg kawg nkaus. Feem ntau yuav tsum muaj 1-2 qhov loj dua qhov chaw nyob kom ntws.
- Hydronic Distribution: PEX-C yog siv tau rau cov ntawv thov uas tsis yog siv tau xwb.
- Hauv av / faus: PEX-A rau khov / abrasion tsis kam.
Kev tshuaj xyuas tshwj xeeb tswj xyuas cov lus pom zoo PEX cov khoom lag luam hauv txhua qhov xwm txheej. Ib qhov loj me tsis haum rau txhua daim ntawv thov thaum tsuas yog qhov zoo tshaj plaws yog xav tau.
Soliciting Expert Recommendations
Nrog rau ntau qhov sib txawv, kuv ib txwm xav kom sab laj txog cov neeg siv kav dej lossis cov neeg tsim khoom lawv tus kheej rau kev taw qhia thaum tsis paub tseeb:
- Cov Kws Ua Lag Luam Hauv Zos: Cov kws tshaj lij tuaj yeem ntsuas qhov xav tau, cov xwm txheej thiab pom zoo cov khoom lag luam PEX zoo rau qhov xwm txheej. Ceev thiab haum.
- PEX Hom Rep: Cov chaw muag khoom loj xws li Uponor, Zurn, thiab Viega tau mob siab rau kev ua haujlwm los pab xaiv qhov zoo tshaj plaws PEX tubing thiab fittings rau cov ntawv thov tshwj xeeb thiab tshwj xeeb ntawm xov tooj lossis email.
- Cov Chaw Txhim Kho Hauv Tsev: Ua lub thawv loj thiab cov vev xaib kho vajtse xws li Lowes thiab Home Depot muaj cov lus qhia sizing thiab cov cuab yeej xaiv tau pom zoo tshwj xeeb PEX SKUs raws li cov ntsiab lus nkag. Ib qho yooj yim pib taw tes.
Thaum kuv vam tias qhov kev piav qhia no pab koj cov txheej txheem xaiv, cov kws tshaj lij ntawm qhov xav tau tuaj yeem muab cov lus pom zoo meej thaum xav tau tshaj li tus qauv. Tau txais nws txoj cai txij thaum pib tiv thaiv teeb meem hauv txoj kev.
Xaiv qhov zoo tshaj plaws PEX suav nrog kev nkag siab qhov sib txawv ntawm cov ntaub ntawv, qhov ntev, thiab lub peev xwm uas tau tsav los ntawm cov ntawv thov tshwj xeeb los ntawm cov lej lag luam mus rau cov peev nyiaj hauv tsev. Nrog rau ntau txoj kev sib tshuam, kev sab laj txog cov neeg siv kav dej lossis cov neeg ua haujlwm kev ua haujlwm yooj yim ua rau honing hauv cov khoom zoo meej. Thaum tag nrho PEX muab kev ua kom ntev, kev sib tw, thiab kev faib ua feem raws li qhov xav tau kom tau txais txiaj ntsig zoo tshaj plaws thiab tus nqi uas sawv qhov kev sim ntawm lub sijhawm. Kuv vam tias tus neeg siv kav dej no qhov kev xav ntawm kev xaiv PEX zoo ua rau lub teeb ntawm txoj kev nyuaj tab sis tseem ceeb heev. Thov hu rau lwm yam lus nug!
