Patent ID: 6935593

Claim:
An airplane gas distribution system comprising: a pressurized gas source; a first supply line connected to a first set of passenger emergency oxygen supply means for supplying pressurized gas to passengers of the airplane; a second supply line connected to a second set of passenger emergency oxygen supply means for supplying pressurized gas to passengers of the airplane; a first shut-off valve; a second shut-off valve; a branching site arranged downstream of said pressurized gas source for said first supply line and for said second supply line, wherein said first supply line is connected via said first shut-off valve to said branching site and said second supply line is connected to said branching site via said second shut-off valve; a pressure-measuring means detecting and determining the differential pressure between pressures prevailing in said first and second supply lines; and an evaluating device for evaluating a measured pressure signal and for sending a closing signal to the shut-off valve of the supply line causing a pressure drop.