Cov Khoom Siv Yeeb Nkab PVC vs Cov Khoom Siv Tooj Liab: Yuav Xaiv Li Cas

Kev Taw Qhia

Kev xaiv ntawm cov khoom siv yeeb nkab PVC thiab cov khoom siv tooj dag tsis yog tsuas yog tus nqi xwb. Txhua yam khoom siv ua haujlwm sib txawv thaum muaj kev nyuaj siab, cua sov, kev raug tshuaj lom neeg, thiab kev ntxhov siab ntawm lub cev, uas cuam tshuam rau cov txheej txheem teeb tsa, kev xav tau kev saib xyuas, thiab lub neej ua haujlwm tag nrho. PVC feem ntau nyiam siv rau cov dej txias thiab cov dej ntws uas tsis hnyav, tiv taus xeb, thaum tooj dag feem ntau xaiv rau kev ruaj khov, kub dua, thiab cov kav dej uas xav tau ntau. Tsab xov xwm no piav qhia txog qhov sib txawv tseem ceeb hauv kev ua tau zoo, tus nqi, lub neej ua haujlwm, thiab cov ntawv thov ib txwm muaj kom koj tuaj yeem phim cov khoom siv haum rau cov kav dej, peev nyiaj, thiab cov xwm txheej ua haujlwm nrog tsawg dua qhov xav tsis thoob tom qab.

Xaiv Ntawm PVC thiab Cov Khoom Siv Plumbing Tooj Liab

Kev xaiv cov khoom siv tsim nyog rau kev xa cov kua dej yog qhov kev txiav txim siab tseem ceeb hauv kev tsim kho tshuab thiab kev tsim vaj tsev. Kev sib cav sib ceg ntawm cov khoom siv yeeb nkab PVC thiab lawv cov khoom siv tooj dag yog tsom mus rau kev sib npaug ntawm cov nqi khoom siv ua ntej nrog kev ua haujlwm ntev. Ob qho tib si muaj cov khoom siv sib txawv uas qhia lawv qhov kev tsim nyog thoob plaws kev lag luam, kev lag luam, thiab kev sib txuas lus hauv tsev.

Cov khoom siv cuam tshuam rau kev teeb tsa thiab kev pabcuam lub neej

Cov khoom siv ntawm cov ntaub ntawv no qhia txog lawv cov txheej txheem teeb tsa thiab lub neej voj voog. Polyvinyl chloride (PVC) yog qhov nyiam heev rau nws cov qauv sib dua, uas ua kom nrawm dua thiab txo cov khoom siv ntawm cov qauv tsev. Thaum teeb tsa kom raug siv cov primer thiab cov cement solvent, PVC networks feem ntau xa lub neej kev pabcuam txhim khu kev qha ntawm 50 txog 70 xyoo hauv cov ntawv thov dej txias. Ntawm qhov tod tes, tooj dag yog cov khoom siv tooj liab-zinc uas xav tau kev txhawb nqa cov qauv hnyav dua tab sis muaj kev ruaj khov kho tsis sib xws. Cov khoom siv tooj dag feem ntau ua tiav lub neej kev pabcuam ntau dua 80 txog 100 xyoo, tiv taus kev cuam tshuam lub cev, kev puas tsuaj ib puag ncig, thiab cov zog sab nraud zoo dua li cov polymers hluavtaws.

Cov ntaub ntawv siv dav dav rau PVC thiab cov khoom siv tooj dag

Cov chaw siv tau nruj me ntsis tswj hwm cov lus qhia ntawm cov khoom no. PVC muaj zog hauv cov xwm txheej kub thiab txias xws li kev ywg dej ua liaj ua teb, cov kav dej hauv nroog, thiab cov qhov dej ntws pov tseg (DWV). Nws tiv thaiv tag nrho cov av los ntawm kev xeb galvanic ua rau nws zoo tagnrho rau kev faus ncaj qha. Txawm li cas los xij, cov qauv kev lag luam txwv cov qauv PVC rau cov chaw uas qhov kub ntawm cov kua dej tsis tshaj 140 ° F (60 ° C). Vim yog qhov kev txwv thermal no, cov khoom siv tooj dag yog tus qauv yuav tsum tau ua rau cov nodes siab, suav nrog cov kab faib dej kub, cov voj voog cua sov hydronic, thiab kev sib txuas hloov pauv rau cov khoom siv kho tshuab uas qhov kub thiab txias ib txwm nce siab.

Qhov Sib Txawv ntawm Kev Ua Haujlwm Tseem Ceeb

Kev tshuaj xyuas cov lus qhia txog kev tsim kho ntawm cov yeeb nkab PVC nrog rau lwm cov khoom siv tooj dag qhia tau tias muaj qhov sib txawv ntawm kev ua haujlwm kub thiab siab. Cov kws ua haujlwm yuav tsum soj ntsuam cov ntsuas kev ua tau zoo no kom tiv thaiv kev puas tsuaj loj heev ntawm lub kaw lus thiab xyuas kom meej tias ua raws li cov cai.

Siab, kub, xeb, thiab lub zog

Cov cua sov thiab siab ua haujlwm ua cov kab faib tseem ceeb ntawm ob yam khoom no. Cov Qauv Schedule 40 PVC muaj kev poob qis hauv kev ntsuas siab thaum qhov kub thiab txias hauv ib puag ncig lossis sab hauv nce siab, ua rau nws poob nws cov qauv ruaj khov saum 140 ° F (60 ° C). Qhov sib piv, cov khoom siv tooj dag yooj yim tswj cov ntawv thov kub siab, ua haujlwm tas li hauv cov chaw ib puag ncig tshaj 200 ° F (93 ° C) thaum tswj cov ntsuas siab siab dua 400 PSI. Txawm hais tias PVC tsis muaj zog rau galvanic thiab electrolytic corrosion, tooj dag tuaj yeem ua rau dezincification yog tias raug rau cov dej muaj zog heev nrog pH qis dua 6.5 lossis cov tshuaj chloride siab tsis tshua muaj.

Cov txheej txheem sib txuas, kev ruaj khov, thiab kev kho tau

Cov txheej txheem siv los koom nrog cov khoom siv no qhia txog qhov ceev ntawm kev sib dhos thawj zaug thiab qhov ua tau ntawm kev saib xyuas yav tom ntej. PVC vam khom kev vuam cov kuab tshuaj, cov txheej txheem sib xyaw tshuaj uas yuav tsum tau siv sijhawm ntawm 2 thiab 24 teev kom kho tau nyob ntawm qhov av noo thiab txoj kab uas hla ntawm cov yeeb nkab. Thaum sib xyaw lawm, cov pob qij txha PVC yog qhov ruaj khov thiab yuav tsum tau txiav tawm tag nrho rau kev kho. Cov khoom siv tooj dag siv cov xov NPT sib txuas, cov nplhaib nias, lossis kev vuam hws. Cov xov thiab cov pob qij txha tooj dag nias tso cai rau kev nias lub cev tam sim ntawd thiab tuaj yeem raug rhuav tshem yam tsis muaj kev puas tsuaj, txo qis lub sijhawm tsis ua haujlwm thaum lub sijhawm saib xyuas tseem ceeb.

Cov qauv sib piv ntawm ib sab mus rau ib sab

Yuav kom ua kom cov txheej txheem ntsuam xyuas yooj yim dua, cov lus hauv qab no piav qhia txog cov ntsuas sib piv rau ob hom kev sib haum.

Thaum Cov Khoom Siv Tooj Liab Yog Qhov Kev Xaiv Zoo Dua

Txawm hais tias cov polymers tseem ceeb rau kev thauj cov kua dej ntau vim yog kev siv nyiaj tsawg, cov khoom siv tooj dag tseem yog qhov tseem ceeb rau cov khoom siv tseem ceeb. Rau cov neeg cog lus ua lag luam thiab cov thawj coj hauv chaw ua haujlwm, kev xaiv tooj dag yog kev nqis peev zoo hauv kev ua kom lub cev muaj zog, tshwj xeeb tshaj yog qhov twg kev ntxhov siab thermal thiab cov khoom siv kho tshuab muaj ntau heev.

Kev ua tau zoo hauv dej kub thiab siv ntau zaus

Cov tshuab tsim thiab faib dej kub yuam kom muaj kev ruaj khov thermal uas tsuas yog cov khoom siv hlau thiaj li muab tau. Cov cai tsim kho feem ntau hais tias cov kav dej uas kub hnyiab lossis cov kav dej uas rhiab heev rau cua sov tsis tuaj yeem txuas ncaj qha rau cov cua sov dej. Feem ntau, cov cai xav tau tsawg kawg yog 18 ntiv tes ntawm cov kav dej hlau thiab cov khoom siv txuas ntxiv los ntawm qhov chaw kub ua ntej hloov mus rau cov khoom siv hluavtaws. Cov khoom siv tooj dag zoo tshaj plaws hauv cov cheeb tsam no, nqus tau cov kev nthuav dav thermal thiab kev sib cog lus rov ua dua yam tsis muaj kev txom nyem los ntawm kev qaug zog, kev tawg, lossis kev tawg me me uas ua rau cov polymers tawv nqaij puas tsuaj ntau xyoo ntawm kev siv rov ua dua.

Cov tsav tsheb nqi, qib zoo, thiab cov yam ntxwv ntawm kev nrhiav khoom

Kev yuav cov khoom siv tooj dag yuav tsum tau siv cov khoom siv thiab cov qauv nqi nyuaj dua li kev yuav cov PVC ntau. Cov tooj dag zoo Dezincification Resistant (DZR), uas muaj cov arsenic lossis tin me me los tiv thaiv zinc leaching, feem ntau hais kom muaj tus nqi siab dua 15% txog 20% ​​dua li cov tooj dag daj txheem tab sis nws tseem ceeb rau kev siv tau ntev hauv cov chaw dej tawv. Rau cov haujlwm lag luam loj lossis OEM tsim khoom, cov neeg yuav khoom kuj yuav tsum suav nrog Yam Tsawg Kawg Nkaus (MOQs). Kev tsim cov khoom siv tooj dag feem ntau xav tau MOQs txij li 1,000 txog 5,000 units, nyob ntawm qhov nyuaj ntawm CNC machining xav tau. Kev nkag siab txog cov nqi tsav tsheb no ua kom ntseeg tau tias qhov project kwv yees thiab cov khoom siv raug.

Kev Ua Raws Cai, Kev Yuav Khoom, thiab Tag Nrho Tus Nqi

Cov lus qhia tshwj xeeb ntawm cov khoom siv plumbing txuas ntxiv mus rau qhov kev ua tau zoo ntawm cov khoom siv kho tshuab; nws suav nrog kev ua raws li txoj cai nruj, kev xa khoom, thiab tag nrho cov nqi ntawm kev muaj. Kev tshuaj xyuas cov yam no yog qhov tseem ceeb rau kev ua tiav ntawm qhov project thiab kev txo qis kev pheej hmoo.

Cov lej, daim ntawv pov thawj, thiab cov kev cai rau dej haus

Kev ua raws li txoj cai yog qhov tseem ceeb heev, tshwj xeeb tshaj yog nyob rau hauv cov dej haus uas tsim los rau tib neeg haus. Txoj Cai Dej Haus Huv (SDWA) hauv Tebchaws Meskas txwv tsis pub muaj cov hlau lead hauv cov khoom siv kav dej. Yuav kom ua raws li, cov khoom siv tooj dag yuav tsum tau ntawv pov thawj rau NSF/ANSI 372 thiab NSF/ANSI 61 cov qauv, uas yuam kom muaj cov hlau lead nruab nrab tsawg dua 0.25%. Cov khoom siv kav dej PVC ua tau raws li cov kev cai tsis muaj hlau lead, tab sis lawv tseem yuav tsum nqa daim ntawv pov thawj NSF-pw (dej haus tau) kom ntseeg tau tias tsis muaj cov tshuaj yas lossis cov tshuaj ruaj khov uas ua rau muaj kev phom sij nkag mus rau hauv cov dej siv sijhawm ntev.

Cov ntsiab lus ntawm cov hlau lead, kev tsim khoom sib xws, thiab kev xa khoom

Kev hloov pauv thoob plaws hauv kev lag luam mus rau tooj dag uas tsis muaj txhuas tau ua rau muaj kev nyuaj tshiab hauv kev tsim khoom. Cov txhuas feem ntau ua lub roj nplua nyeem tseem ceeb thaum lub sijhawm ua cov hlau tooj dag. Cov kev xaiv niaj hnub no uas tsis muaj txhuas, uas hloov cov khoom xws li bismuth lossis silicon, nyuaj dua. Qhov kev tawv ntawm cov khoom no ua rau cov cuab yeej CNC hnav sai dua txog li 30%, ua rau cov nqi tsim khoom ntau dua thiab ncua sijhawm tsim khoom. Yog li ntawd, kev yuav ntau cov khoom siv tooj dag tshwj xeeb uas tsis muaj txhuas feem ntau yuav tsum siv sijhawm li 6 txog 8 lub lis piam, ua rau cov neeg faib khoom lag luam wholesale thiab cov neeg cog khoom kho tshuab yuav tsum kwv yees cov khoom muag kom meej.

Cov kauj ruam ntsuam xyuas rau cov neeg yuav khoom thiab cov neeg cog lus

Cov pab pawg yuav khoom yuav tsum ntsuas cov yam ntxwv no kom tsis txhob muaj teeb meem kev muab khoom. Lub rooj hauv qab no qhia txog cov kev cuam tshuam ntawm kev ua haujlwm ntawm kev nrhiav cov khoom siv ua raws li cov cai rau kev siv lag luam.

Yuav Ua Li Cas Xaiv Qhov Kawg

Thaum kawg ntawm daim ntawv qhia txog qhov yuav tsum tau ua, cov engineers thiab cov pab pawg neeg yuav khoom yuav tsum ua kom cov khoom siv tau raws li qhov xav tau ntawm ib puag ncig thiab cov kev txwv ntawm cov peev nyiaj. Kev sib xyaw ua ke feem ntau yuav ua rau cov kav dej zoo tshaj plaws thiab pheej yig tshaj plaws.

Kev xaiv lub moj khaum los ntawm daim ntawv thov thiab ib puag ncig

Ib txoj kev xaiv uas nruj heev qhia tias cov khoom siv yuav tsum tau siv rau qhov chaw uas lawv lub zog lub cev tau siab tshaj plaws. Yog tias ib lub cev ua haujlwm tas li ntawm qhov kub tshaj 140 ° F (60 ° C), lossis yog tias cov khoom yuav raug rau ultraviolet (UV) hluav taws xob ncaj qha yam tsis muaj kev tiv thaiv cladding, tooj dag yog qhov kev xaiv tsis muaj kev sib cav. Ntawm qhov tod tes, rau cov tes hauj lwm thauj cov kua dej ntau, xws li kev ywg dej hauv av lossis cov kav dej phwj hauv nroog, kev tiv thaiv tshuaj lom neeg thiab kev teeb tsa sai ntawm cov kav dej PVC ua rau lawv yog qhov zoo tshaj plaws. Cov kws ua haujlwm feem ntau tsim cov kab ke sib xyaw, siv PVC rau kev khiav ntev, ncaj, qhov kub thiab hloov mus rau tooj dag rau cov li qub, kev sib txuas, thiab kev sib txuas chav kho tshuab.

Kev sib npaug ntawm tus nqi ua ntej nrog tus nqi mus sij hawm ntev

Kev xam nyiaj txiag yuav tsum nthuav dav tshaj qhov kev txiav txim yuav khoom thawj zaug. Ua ntej, cov khoom siv tooj dag tuaj yeem kim dua 400% txog 1000% rau ib daim dua li lawv cov PVC sib npaug; lub luj tshib PVC ib nrab nti tus qauv yuav raug nqi $ 0.50, thaum lub luj tshib tooj dag tsis muaj hmoov txhuas sib piv tuaj yeem kim dua $ 4.50. Txawm li cas los xij, kev tsim kho tus nqi yuav tsum tau xam tag nrho cov nqi siv tas mus li. Hauv thaj chaw muaj kev kub siab lossis kub siab, qhov ua tsis tiav ntawm ib qho khoom siv polymer tuaj yeem ua rau muaj ntau txhiab daus las hauv kev puas tsuaj los ntawm dej, kev kho kom zoo, thiab lub sijhawm ua haujlwm tsis ua haujlwm. Kev qhia txog tooj dag zoo hauv cov nodes tseem ceeb no ua rau qhov kev pheej hmoo no tsis muaj zog, ua kom ntseeg tau tias cov peev txheej pib siab dua txhais tau ncaj qha mus rau kev tiv thaiv cov cuab tam mus sij hawm ntev thiab txo cov nuj nqis txij nkawm.

Cov Ntsiab Lus Tseem Ceeb

• Cov lus xaus tseem ceeb tshaj plaws thiab cov laj thawj rau kev siv cov yeeb nkab pvc
• Cov lus qhia tshwj xeeb, kev ua raws li txoj cai, thiab kev kuaj xyuas kev pheej hmoo uas tsim nyog lees paub ua ntej koj cog lus
• Cov kauj ruam tom ntej thiab cov lus ceeb toom uas cov nyeem ntawv tuaj yeem siv tau tam sim ntawd

Cov Lus Nug Feem Ntau

Thaum twg kuv yuav tsum xaiv cov khoom siv yeeb nkab PVC es tsis txhob siv tooj dag?

Siv PVC rau cov kav dej txias, DWV, kev ywg dej, thiab cov kav faus qhov twg qhov kub nyob qis dua 140 ° F thiab cov nqi qis.

Thaum twg cov khoom siv tooj dag yog qhov kev xaiv zoo dua?

Xaiv cov tooj dag rau cov dej kub, cov tshuab hydronic, cov cheeb tsam muaj kev cuam tshuam siab, thiab cov khoom sib txuas uas xav tau lub zog siab dua thiab tiv taus kub.

Cov khoom siv PVC puas tuaj yeem tiv taus kev kub siab?

Thaum kub txog 73°F, qee cov khoom siv PVC Schedule 40 yuav tiv taus qhov kub siab, tab sis qhov ntsuas yuav poob qis thaum kub nce siab. Ib txwm xyuas daim ntawv qhia qhov siab ntawm cov khoom siv.

Cov khoom siv PVC puas yooj yim dua rau kev teeb tsa dua li cov khoom siv tooj dag?

Feem ntau yog. PVC sib dua thiab vuam nrog cov kuab tshuaj, tab sis cov pob qij txha yuav tsum tau kho kom zoo. Cov khoom siv uas muaj xov tooj dag lossis cov khoom siv nias tuaj yeem raug nias tam sim ntawd.

Cov neeg yuav khoom yuav nrhiav tau cov neeg muab khoom siv txhim khu kev qha rau cov kev xav tau ntawm qhov project li cas?

Piv cov ntaub ntawv qhia txog cov khoom siv, qhov ntsuas siab, thiab kev txhawb nqa daim ntawv thov. Yog xav paub ntxiv txog kev muab cov khoom siv hlau rau kev lag luam, mus saib cov chaw tsim khoom xws li nbfh-metal.com kom paub txog cov khoom siv tooj dag uas muaj.