Ma ke ʻano he mea hana valve, hana ʻo COVNA i nā ʻano valve āpau no nā pipeline. E like me ka valve puka, ka valve globe, ball valve, butterfly valve, check valve a pela aku. Loaʻa i ka uila uila, hana pneumatically a hana lima ʻia no kāu mau koho. E kūkākūkā mai iā mākou e kiʻi i kahi sol valve manuahi...
Heluhelu hou aku