E fa'afefea le lelei o le valve butterfly Saina? Asiasi ile fale ta'uta'ua ole butterfly VALVE gaosi oloa LIKE VALVE
I totonu o le gaosiga o le valve a Saina, o le butterfly valve e masani ona faʻaaogaina i le suauʻu, vailaʻau, metallurgy, eletise eletise ma isi fale gaosi oloa ona o lona fausaga faigofie, faigofie le faʻaogaina ma le faʻamaufaʻailoga lelei. Faatasi ai ma i latou, pei ole VALVE, e pei o se iloa lelei...
va'ai fa'amatalaga