The flue, cold air, combustion air, combustion and gas piping can be effectively cut off for gas, flue gas and air. When the hot stove burning then open the flue valve, let the exhaust gas through the flue discharge out. When the hot air furnace air supply then close the flue valve to cut off the flue access.

The flue valve is applicable to the flue, cold air, combustion air, combustion and gas pipelines of the blast furnace hot blast stove system, which can effectively cut off the gas, flue gas and air. It can be driven by electric hand-operated chain drive or hydraulic drive. The valve body material is cast steel.