BackFlow Kudzivirira
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BackFlow Kudzivirira, Tws Valve
Verenga zvimweBackFlow Kudzvinyirira Inonyanya kushandiswa kune mvura kubva kuHurban unit kune Generage Sewage unit yakanyanyisa kudzvanyisa kudzvinyirira kuitira kuti mvura yemvura ikwanise kungoita chete. Basa rayo nderokudzivirira kumashure kweiyo pombi yepipi kana chero mamiriro ezvinhu siphoni inoyerera ichidzokera, kuitira kudzivirira kusvibiswa kusvibiswa.
