Ivalve yokuguqula i-hydraulic yezityalo zokuxuba i-asphalt ngokuqhelekileyo ayinako ukusilela, kodwa ngamanye amaxesha kunokubakho utshintsho lwesigaba esingalindelekanga, ukuvuza kwegesi, i-electromagnetic induction pilot valve, njl.

Ukuba i-valve yokubuyisela umbane we-hydraulic ayitshintshi isigaba ngexesha, ibangelwa ubukhulu becala ukugqiba kakubi, ukuxinga kwentwasahlobo okanye ukonakala, amabala e-oyile okanye intsalela ebambekile kwindawo yokutsala, njl.njl. Kuyimfuneko ukujonga imeko ye-triplex yomoya kunye i-viscosity yegrisi. Ukuba kuyimfuneko, igrisi okanye ezinye iindawo zingatshintshwa.
Ngethuba lokusetyenziswa kwexesha elide, i-valve yokubuyisela i-hydraulic yesityalo sokuxuba i-asphalt ixhomekeke kumonakalo kwindandatho yokutywina engundoqo ye-valve, isihlalo se-valve kunye ne-high-pressure valve yesango, okubangela ukuvuza kwegesi kwi-valve. Ngeli xesha, umsesane wokutywina, isihlalo sevalve kunye nevalve yesango yoxinzelelo oluphezulu kufuneka itshintshwe, okanye ivalve yokubuyisela ihydraulic kufuneka itshintshwe ngexesha.
Ngoko ke, ukuze kuncitshiswe ngokufanelekileyo izinga lokungaphumeleli kwezixhobo zesityalo sokuxuba i-asphalt, kuyafuneka ukuba ubeke ingqalelo ekugcinweni koomatshini kunye neengxenye.