Nominal Pressure: 0.20Mpa and 0.40Mpa. Applicable Media: Air, smoke and exhaust gas. Applicable Temperature: less than 400. 1. This kind of valves is suitable to be used in the smoke pipeline, the cooling air pipeline, the combustion-supporting air pipeline, the coal gas pipeline, etc. In the hot air furnace system of the blast furnace to effectively cut the flow of the smoke, the coal gas, the ...