Kukho kwakhona iivalve ezibuyisela umva kwizityalo zokuxuba i-asphalt, ngokubanzi engabangeli iingxaki, ngoko andizange ndiqonde ngononophelo izisombululo zayo ngaphambili. Kodwa ekusebenziseni okwenyani, ndiye ndadibana nolu hlobo lokusilela. Ndimele ndijongane njani nayo?

Ukungaphumeleli kwevalve yokubuyisela umva kwisityalo sokuxuba i-asphalt akukho nzima, oko kukuthi, ukuguqulwa kwangethuba, ukuvuza kwegesi, ukungaphumeleli kwevalve ye-electromagnetic pilot, njl. Izizathu ezihambelanayo kunye nezisombululo zihluke ngokuqinisekileyo. Kwimeko yokuguqulwa kwangethuba kwevalve yokubuyisela umva, ngokuqhelekileyo kubangelwa yi-lubrication engalunganga, imithombo ebambekayo okanye eyonakeleyo, i-oyile okanye ukungcola okuxinzelelwe kwindawo yokutyibilika, njl. kunye ne-viscosity ye-oyile yokuthambisa. Ukuba kuyimfuneko, ioli yokuthambisa okanye ezinye iindawo zingatshintshwa.
Emva kokusetyenziswa kwexesha elide, ivalve ebuyela umva ithanda ukunxitywa kwiringi yevalve engundoqo yokutywina, ukonakala kwesikhondo sevalvu kunye nesitulo sevalvu, okukhokelela ekuvuzeni kwegesi kwivalve. Ngeli xesha, umsesane wokutywina, isiqu sevalve kunye nesihlalo sevalvu kufuneka itshintshwe, okanye ivalve yokubuyisela umva kufuneka itshintshwe ngokuthe ngqo. Ukuze kuncitshiswe izinga lokungaphumeleli komxube we-asphalt, ukugcinwa kufuneka kuqiniswe ngamaxesha aqhelekileyo.