Cov Hluav Taws Kub Ntaus Nrov Viav Vias Kos Valve yog lub zoo-zoo valve tsim tshwj xeeb rau hluav taws tiv thaiv kab ke rau cov tshuab hluav taws. Nws yog tsim los ntawm cov ntaub ntawv ruaj kom ntseeg tau tias ntev-ntev kev ua tau zoo thiab kev ntseeg tau.