Ntau yam ntawm cov kav dej nyob rau hauv kev ua lag luam, interface fittings tab sis feem ntau ntawm cov tooj liab, txawm tias qee qhov ntawm cov yeeb nkab tsis tuaj yeem siv tooj liab fittings, nws tseem nyob rau hauv qhov chaw ntawm lub interface nrog lub faucet kom muaj tooj liab fittings. Tab sis yog tias cov khoom siv tooj liab txuas nrog rau lwm cov kav dej, vim yog cov yeeb nkab thiab fittings ntawm cov khoom sib txawv, thermal expansion thiab contraction ntawm lub cev thiab mechanical zog ntawm qhov sib txawv yog loj heev, lub firmness ntawm kev sib txuas ib txwm raug rau cov kev cov nyom ntxiv. Yog li ntawd, qhov firmness yuav zoo heev thaum cov kav dej tooj liab txuas nrog tooj liab fittings.
Txawm koj xav taucov kav dej tooj liab, tooj liab ,tooj liab daim hlau, peb muaj cov khoom thiab kev txawj ntse kom tau raws li koj xav tau.
