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This valve operates as propellant chamber valve for the Prometheus engine, on both oxygen and methane sides. This ball valve allows the propellant flow regulation thanks to its motorized geared electrical actuator as well as the propellant tightness in closed position.

This box is made of 3 normally closed direct drive electro-valves providing a nitrogen gas flow when activated by an electrical command. The baseplate integrates three identical, two-ways direct drive EVs, consisting in three screwed mono-stable solenoid actuators.

The Safety relief valve (SSEI), part of the liquid He subsystem (SSHeL), main function is to ensure the quick depressurization of the Helium liquid tank in case of unexpected overpressure and in the nominal case, ensure the tightness of Helium tank.

The upper stage EV box is made of 6 normally closed electro-valves providing a gas flow to the user when activated by an electrical command. It is a power-amplified device, composed of a power stage driven by a pilot stage, actuated by a redundant electrical solenoid.

The Hydrogen Chamber Valve is integrated into the Vinci engine of the Ariane 6 upper stage. This normally closed pneumatic poppet valve is located upstream from the combustion chamber and its purpose is to control the gaseous hydrogen supply to the engine combustion chamber.

The Oxygen Chamber Valve (VCO) is a bi-stable pneumatic ball valve, located upstream from the combustion chamber. Its purpose is to control the liquid oxygen supply to the engine combustion chamber.

The Purge Valve (PV) allows the engine’s chill down and manage the engine transients. It can open under high pressure.

The Hot Gas Valve (VGC2) is a pneumatically actuated throttling valve on the Ariane 5 Vulcain 2 cryogenic engine. It is located downstream of the gas generator.

The Hot Gas Valve (VGC 2.1) is an electrically actuated throttling valve on the Ariane 6 Vulcain 2.1 cryogenic engine, located downstream of the gas generator. Its position is fixed during flight.

The Chamber Valve (VC) is part of the Ariane 5 and 6 Vulcain cryogenic engine. The VC provides very low propellant leakage tightness under cryogenic conditions and at the same time a very low pressure drop in open position.