Butterfly valve o se ituaiga valve, e faʻapipiʻi i luga o se paipa, faʻaaogaina e pulea ai le taamilosaga o le ala i totonu o se paipa. O le valve butterfly o loʻo faʻaalia i le fausaga faigofie, mama mama, e aofia ai le faʻaogaina o masini, valve body, valve plate, valve stem, valve seat ma isi. Fa'atusatusa i isi valve ...
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