A high-pressure pneumatic control valve operates on compressed air to control the flow of some given process media, be it liquids or gases, through the system. They are meant to handle high pressure and tolerance of the pressures in millions of bars and more within the valves and enable the accurate modulation of the stream. Such components as hardened seats, corrosion-resistant bodies, and special design seals to withstand the unfavorable conditions will be installed in them.