Hom K tooj liab kav yog cov kav ntev thiab ua kom kav ntev, vim lawv cov phab ntsa tuab. Lub thickness ntawm hom K kav yuav txawv raws li ib tug neeg cov yeeb nkab txoj kab uas hla: piv txwv li, ½-inch hom K yeeb nkab muaj phab ntsa thickness ntawm .049 ntiv tes, thaum ¾-inch muaj ib tug tuab ntawm .065 ntiv tes. Vim tias hom no yog tuab dua thiab hnyav dua, nws kuj tseem kim dua, ua rau nws yog qhov kev xaiv zoo rau cov haujlwm uas xav tau heft, xws li kev lag luam kav dej, HVAC, lub nroog dej hauv nroog, thiab cov kab hauv av. Hom K muaj nyob rau hauv cov ntaub ntawv hloov tau yooj yim thiab nruj, thiab feem ntau yog txheeb xyuas los ntawm lub cim ntsuab.
Pom tau tias yog cov kav dej ntau tshaj plaws, Hom L tooj liab kav feem ntau yog siv rau hauv cov kav dej hauv tsev, cov pas dej da dej, qee qhov haujlwm HVAC, thiab kev tiv thaiv hluav taws. Cov kav dej no tsis tshua kim dua li cov kav dej Hom K, tab sis tseem muaj zog heev, nrog rau phab ntsa tuab ntawm .045 ntiv tes rau ¾-inch txoj kab uas hla. Hom L tooj liab kav yog cim nrog xiav thiab tuaj nyob rau hauv ob qho tib si saj zawg zog yob thiab nruj tubing. Yog tias koj thaj chaw muaj dej nyuaj, Hom L yog qhov kev xaiv zoo vim tias cov zaub mov yuav tsis hnav ntawm phab ntsa tuab yooj yim li Hom M kav.
Kev txheeb xyuas los ntawm cov cim liab, Hom M yog cov yeeb nkab nyias nyias uas tau teev tseg ntawm no, nrog phab ntsa tuab ntawm .032 ntiv tes rau ¾-inch txoj kab uas hla cov yeeb nkab lossis .028-inch thickness rau ½-inch inch yeeb nkab. Hom M tooj liab kav feem ntau yog siv los kho, hloov, thiab txuas ntxiv rau cov kav dej sab hauv (yog tias koj xav tau kho cov yeeb nkab tooj liab, piv txwv li); nws tsis nruj thiab yooj yim rau kev ua hauj lwm nrog tshaj cov kav dej nrog cov phab ntsa tuab, ua rau nws nyiam DIYers. Nws kuj tseem tsis tshua kim tab sis tsis yog ib txwm tso cai los ntawm cov kav dej, yog li xyuas nrog koj lub tuam tsev hauv zos lossis tus neeg kav dej hauv zos ua ntej txhim kho nws.
DWV stands rau "drain-nkim-vent"-raws li qhov qhia tau hais tias, cov kav dej no yog siv tshwj xeeb hauv cov kav dej thiab qhov cua. Koj yuav tsis pom tooj liab DWV kav hauv tsev tshiab; ntau qhov kev tsim kho niaj hnub no cia siab rau ABS yas lossis PVC kav vs. Copper DWV cov kav dej tsuas yog tsim nyog rau kev siv hauv av, thiab yeej tsis siv hauv cov tshuab dej vim lawv tsuas muaj phab ntsa tuab ntawm .042 ntiv tes rau 2-inch yeeb nkab thiab tuaj yeem tiv taus 15 psi ntawm siab. Copper DWV kav yog cim nrog daj.
