Cov Hluav Taws Kub Ntaus Grooved Valve Nrog Tamper hloov yog lub hom phiaj zoo thiab txhim khu kev qha ua tshwj xeeb rau cov tshuab hluav taws. Lub valve no yog nruab nrog tamper hloov, uas muab ib txheej ntxiv ntawm kev ruaj ntseg los ntawm kev kuaj pom ib qho kev tsis muaj cai lossis ua phem.