The Wafer Butterfly Valve ndi Flange Butterfly Valve ndi zolumikizira ziwiri.Pankhani yamtengo, mtundu wa Wafer ndi wotsika mtengo, mtengo wake ndi pafupifupi 2/3 ya Flange.Ngati mukufuna kusankha valavu yotumizidwa kunja, momwe mungathere ndi mtundu wa Wafer, mtengo wotsika mtengo, kulemera kwake.Utali wa...
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