DGV API600 Cast Steel Gate Valve is widely used in the industries of oil, chemical, medicine-made, fertilizer, electric power, etc. As an on/off control valve for passing or cutting off the medium, the gate is designed as a wedge elastic gate of easy seal and wearing compensation, and seal surface is overlayed with wearing resistent hardened alloy; the seat seal surface overlayed with wearing resistant hardened alloy to be matched with gate seal surface; the stem is specially treated to ensure its strength, rigidity, corrosion resistance and abration resistance. DGV gate valve is with reliable seal, safe use, easy operation. Valves are available in a complete range of body/bonnet materials and trims, which are used for the medium of water, steam, oil product, nitric acid, acetic acid, etc