Backflow Preventer
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Backflow preventer, TWS Valve
Werengani zambiriBackflow preventer yomwe imagwiritsidwa ntchito popereka madzi kuchokera kutawuni kupita kumalo otayira zimbudzi amaletsa kukakamiza kwa mapaipi kuti madzi aziyenda njira imodzi yokha. Ntchito yake ndikuletsa kubwereranso kwa sing'anga yamapaipi kapena mkhalidwe uliwonse wa siphon kubwerera mmbuyo, kuti mupewe kuipitsa m'mbuyo.
