O le tulafono faatonutonu lautele o le seti valve e manaʻomia ai le auala o sauniuniga faʻataʻitaʻiga valve
O le tulafono faatonutonu lautele o le seti valve e manaʻomia ai le auala o sauniuniga faʻataʻitaʻiga valve O lenei tulafono faatonutonu e faʻatatau i le faʻatulagaina o le valve gate, globe valve, ball valve, butterfly valve ma le faʻaitiitia o le mamafa o le valve i le petrochemical plant. Siaki valve, valve saogalemu,...
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