'apamemeawaferbutterfly valve, e masani ona faʻaaogaina i totonu o le gataifale, lelei le faʻafefeteina, e masani lava o le tino apamemea alumini, alumini apamemea valve ipu.ZFAvalve e iai le va'a va'a poto masani, i Sigapoa, Malaysia ma isi atunu'u ua tu'uina atu va'a va'a.