Kumenagura inyundo icyerekezo cya valve nigice kinini-cyuzuye.Kugeza ubu, hari abayikora bake bashobora kuyibyaza umusaruro mubushinwa, bityo igiciro ntikiri hasi.
Hariho ubwoko bwinshi bwibikoresho byo guhindura valve ya excavator ikubita inyundo.Mugihe uhisemo, abakiriya bagomba kubanza kubaza ibikoresho bikozwe, kuberako iki ari igice cyuzuye, kandi ibicuruzwa bifite inenge bishobora gukora ibisambo byose byo kumenagura inyundo, bityo turashaka kugura ibicuruzwa byiza.