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Pressure Control Units: vital equipment for launch

Pressure Control Units have a key role in getting Ariane launch vehicles into space. The mechanical performance of liquid hydrogen and oxygen tanks, the supply of fuel to the cryogenic engine at constant flow and pressure, control of the hydrogen/oxygen ratio, and the activation of pneumatic valves on the cryogenic stage. Not only does Air Liquide produce the Pressure Control Units, we are also general contractor for the tanks' pressurization trials. That makes all the difference!