In response to the strict requirements of the MARPOL 73/78 Convention regarding the prevention of air pollution from ships, the desulfurization and denitrification flue gas valves supplied by Firsquare are specifically designed for scrubber systems purifying combustion exhaust gas. As a key component controlling the flow of diesel engine exhaust, it can effectively handle harsh exhaust environments characterized by high temperatures, multiple impurities, strong corrosion, and high carbon content. Relying on its outstanding features of a long service life and a zero leakage rate, this product is not only an ideal choice for marine desulfurization and denitrification systems but also widely applicable to various severe industrial flue gas treatment scenarios.