Two level pressurisation valve driven by a fuel metering device

Fuel injection system in a turbomachine, comprising a high-pressure pump (10) for pressurizing fuel from a fuel tank (12) to a high pressure P1, a plurality of fuel injectors (16) arranged in a combustion chamber of the turbomachine (18), and a metering device (14) interposed between this high-pressure pump and the plurality of injectors to control the fuel flow rate flowing into the injectors from the high-pressure pump, the metering device comprises a pressurization valve (28) controlled according to two pressurization levels from a metering valve (22) supplied with fuel from the high-pressure pump. An electro-shutoff valve (26) intended to act on the pressurization valve is furthermore provided to cut off the fuel supply to the injectors.