Lub luj tshib, cov yeeb nkab txuas feem ntau siv rau hauv cov khoom siv, Kuv ntseeg tias peb tsis paub. Lub luj tshib zoo li qhov sib koom ua ke ntawm cov yeeb nkab thiab siv los hloov cov kev taw qhia ntawm cov yeeb nkab. Lub luj tshib ntawm kev ua lag luam feem ntau yog luv luv, yog li nws muaj qee qhov kev txwv ntawm qhov chaw tsim kho thiab siv tshuab, uas ua rau muaj teeb meem rau kev tsim kho. Qhov ntev ntawm lub luj tshib yog luv luv, qhov dav ntawm daim ntawv thov yog me me, yog tias vuam tsis zoo, yooj yim ua rau vuam tsis muaj zog, dej seepage thiab lwm yam teeb meem.
Ifan PPR txuas hniav lub kaum sab xis, qhov ntev ntev dua, dav dua, kom haum rau cov yeeb nkab sib txuas, xws li phab ntsa thiab cov cuab yeej siv tshuab, dej ntau dua, cuam tshuam tsawg dua, ruaj khov txaus, dej ntau dua, tsis muaj kev cuam tshuam, txuas lub luj tshib thiab cov yeeb nkab haum zoo dua, kev ntxhov siab yog ntau yam, muaj kev cuam tshuam ntau dua, muaj kev nyab xeeb thiab txhim khu kev qha. Kev tsim kho tuaj yeem ua rau qee yam teeb meem thaum cov yeeb nkab lossis qhov chaw muaj kev txwv, thiab tseem tsis txhob muaj teeb meem xws li dej seepage thiab blockage los ntawm kev tsis sib haum ntawm cov yeeb nkab fittings, thiaj li txhim kho kev siv dej hauv txhua yam.
