Product Name: metallurgical Valve-Exhaust Valve Trademark: qian-gong-feng Transport Package: Wooden Cases Specification: DN100-1200 Origin: Hebei HS Code: 8481202000 Product Description This series of valves are suitable for by-pass pipes such as flue and cold air in hot blast stove system of blast furnace. Used as pressure equalizing valve and exhaust valve. The valve is a wedge type single gate structure.The valve is carbide sealing surface. The transmission modes are manual, hydraulic, electric or according to the user's requirements.