Basic corrosion kuj ntawm tooj dag
Brass ib txwm tiv thaiv corrosion zoo dua li hlau lossis hlau. Nws tsim cov txheej txheem tiv thaiv patina thaum lub sijhawm.Brass PEX Pob Valvestswj cov dej zoo li qub. Piv txwv li: cov dej hauv nroog ib txwm ua rau muaj corrosion tsawg tshaj li kaum xyoo.
Dezincification yog dab tsi?
Dezincification yog ib hom tooj dag corrosion. Zinc leaches tawm ntawm tooj dag alloy. Qhov no tawm tom qab qaug zog, ntxeem tau tooj liab.Brass PEX Pob Valvestuaj yeem raug kev txom nyem los ntawm qhov no hauv cov dej txhoj puab heev. Piv txwv li: lub valve ua spongy thiab tej zaum yuav tawg.
Cov xwm txheej uas ua rau dezincification
Mos, acidic dej txhawb kev dezincification. Cov kub kub ceev cov txheej txheem. Cov dej tsis khov kuj yog qhov muaj feem pheej hmoo.Brass PEX Pob Valvesmuaj kev pheej hmoo ntawm cov xwm txheej no. Piv txwv li: dej kub recirculation system nrog pH 6.5 dej.
DZR tooj dag vs. standard tooj dag
DZR sawv cev rau dezincification- tooj dag resistant. Nws muaj me me ntawm arsenic lossis antimony.Brass PEX Pob Valvesua los ntawm DZR tooj dag tiv thaiv kev tawm tsam. Piv txwv li: DZR li qub kav ntev li 3-5 zaug hauv dej txhoj puab heev.
Yuav ua li cas txheeb xyuas DZR li qub
Nrhiav "DZR", "CR" (corrosion resistant), lossis "DR" cov cim. Kuj xyuas "NSF/ANSI 61" ntawv pov thawj.Brass PEX Pob Valvesnrog cov cim no muaj kev nyab xeeb. Piv txwv li: qee lub npe siv xiav kov los qhia DZR.
Piv txwv li: kev siv dej khov
Ib lub tsev muaj dej khov heev nrog pH 8.2. Txheem tooj dag li qub yuav kav 20 xyoo.Brass PEX Pob Valvesnrog DZR tooj dag tuaj yeem kav 50 xyoo. Piv txwv li: tus nqi ntxiv ntawm DZR them dhau sijhawm.
Piv txwv li: kev siv dej mos
Ib lub tsev muaj softened dej nrog cov ntxhia hauv cov ntsiab lus tsawg. Cov dej mos tuaj yeem yog acidic me ntsis (pH 6.8).Brass PEX Pob Valvesnrog tus qauv tooj dag yuav corrode sai dua. Piv txwv li: DZR li qub tau pom zoo rau cov dej muag muag thiab.
Galvanic corrosion kev txhawj xeeb
Txuas tooj dag rau cov hlau tsis sib xws tsim ib lub cell galvanic. Hlau los yog txhuas ua ke nrog tooj dag yuav corrode.Brass PEX Pob Valvestxuas rau PEX yas, uas muaj kev nyab xeeb. Piv txwv: cov yeeb nkab yas ua raws li hluav taws xob insulator.
Pitting corrosion nyob rau hauv tooj dag
Localized pitting yuav tshwm sim nyob rau hauv deposits los yog biofilms. Cov tshuaj chlorine hauv dej hauv nroog tuaj yeem ceev pitting.Brass PEX Pob Valvesnrog siab - zoo alloy tiv taus pitting zoo dua. Piv txwv li: lub pitted valve yuav xau los ntawm lub qhov me me tom qab ntau xyoo.
Lead-dawb tooj dag thiab corrosion
Lead- dawb tooj dag feem ntau muaj bismuth lossis silicon hloov. Cov alloys no muaj qhov sib txawv corrosion.Brass PEX Pob Valvesnrog bismuth tooj dag yog ntau corrosion-resistant. Piv txwv li: silicon tooj dag tseem zoo dua tab sis kim dua.
Pom cov cim ntawm dezincification
Dawb los yog grey chalky deposits ntawm lub valve nto. Copper-xim lossis pinkish me ntsis uas zinc ploj mus.Brass PEX Pob Valvesqhia cov cim no yuav tsum tau hloov. Piv txwv li: lub valve uas crumbles thaum kov yog hnyav dezincified.
Cov ntsiab lus kawg corrosion
Brass PEX Pob Valvesyog nruab nrab corrosion-resistant. Txheem tooj dag ua haujlwm zoo rau feem ntau cov dej hauv nroog. Cov xwm txheej hnyav (pH qis, kub siab, dej mos) xav tau DZR tooj dag. Tsis txhob txuas tooj dag rau cov hlau tsis sib xws ncaj qha. Tshawb xyuas li qub txhua xyoo rau cov deposits dawb los yog pitting. Hloov dezincified li qub tam sim ntawd los tiv thaiv kev ua tsis tiav. Rau lub neej ntev hauv dej nyuaj, yuav DZR- ntawv pov thawjBrass PEX Pob Valves. Piv txwv li: them me ntsis ntxiv rau DZR yog pheej yig pov hwm tiv thaiv kev ua tsis tiav ntxov.