PEX thiab PVC yog ob qho khoom siv siv rau cov kav dej thiab cov kav dej, thiab ob qho tib si muaj lawv qhov zoo thiab qhov tsis zoo.
PEX (cross-linked polyethylene) yog cov khoom siv yas hloov tau yooj yim uas tiv taus qhov kub thiab txias thiab tshuaj lom neeg, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau cov dej kub thiab dej txias. PEX tseem tiv thaiv kom khov thiab tawg, thiab nws yooj yim rau nruab vim nws yooj yim thiab muaj peev xwm khoov ib ncig ntawm cov ces kaum yam tsis tas yuav tsum tau fittings. Txawm li cas los xij, PEX tuaj yeem kim dua li PVC, thiab nws yuav tsis haum rau kev siv sab nraum zoov vim nws qhov tsis zoo rau UV hluav taws xob.
PVC (polyvinyl chloride) yog cov khoom siv yas tsis zoo uas feem ntau siv rau cov kav dej thiab khib nyiab. PVC yog qhov ruaj, hnav, thiab tus nqi qis, ua rau nws xaiv zoo rau ntau daim ntawv thov. PVC kuj tseem tiv taus corrosion thiab tshuaj lom neeg, ua rau nws tsim nyog siv rau hauv qhov chaw hnyav. Txawm li cas los xij, PVC tuaj yeem nkig thiab ua rau tawg hauv qhov kub thiab txias lossis cuam tshuam, thiab nws tsis hloov pauv li PEX, uas tuaj yeem ua rau kev teeb tsa nyuaj dua hauv qhov chaw nruj.
Thaum kawg, kev xaiv ntawm PEX thiab PVC yuav nyob ntawm seb cov kev cai tshwj xeeb ntawm koj cov kav dej lossis cov kav dej. Yog tias koj xav tau cov khoom hloov pauv rau cov dej kub thiab dej txias, PEX yuav yog qhov kev xaiv zoo dua. Txawm li cas los xij, yog tias koj xav tau cov khoom siv tsis zoo rau cov kav dej lossis cov khib nyiab, PVC tej zaum yuav tsim nyog dua. Nws yog ib txwm pom zoo kom sab laj nrog ib tus kws kho kav dej lossis tus neeg ua haujlwm muaj ntawv tso cai ua ntej txiav txim siab zaum kawg.