Q1: O le a le valve butterfly?A: Butterfly valve o se valve faʻaaogaina e fetuunai ai le tafe o le vai ma le mamafa, o ona uiga autu e laʻititi laʻititi, mama mama, fausaga faigofie, faʻamaufaʻailoga lelei.Eletise Butterfly Valves o loʻo faʻaaogaina lautele i togafitiga vai, petrochemical, metallurgy, pow eletise ...
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