Birashoboka ko uri inshinge ya fiam Valve umuyobozi ugura valve, kandi valve nziza ya shincheng ni uwubigize umwuga & utanga isoko ushobora kubahiriza ibyo ukeneye. Ntabwo hashyizweho gusa inshinge ya fiam twakoze ibyemezo byindangamiryango mpuzamahanga, ariko turashobora kandi guhura nibyo ukeneye. Dutanga serivisi kumurongo, mugihe mugihe kandi urashobora kubona ubuyobozi bwumwuga kumurimo wa Foam . Ntutindiganye kuganiraho natwe niba ushishikajwe na valve ibangamiwe , ntituzagutererana.