Gate valve Size: DN40-DN600 Material: GGG40 / GGG45 ductile iron. Standard: BS5163,BS3464, DIN3202, DIN3352 Gate valve Size: DN40-DN600Main body material: GGG40 / GGG45 ductile iron.Standard: BS5163,BS3464, DIN3202, DIN3352 etc.Stem: stainless steel 2Cr13, SS304,etc.Suitable application: water