Abstract: Device for supplying breathing gas, particularly for a mouthpiece of a diver, including a casing incorporating, between an inlet orifice for the supply gas and an orifice or the outlet of the gas for the purpose of breathing: a pressure-reducing valve system having a member for controlling the force necessary to open the valve, a member for controlling the flow rate of the gas let into the outlet orifice, the supply device also including a manually actuatable control element capable of interacting with the control member in order to adjust the force necessary to open the valve, characterized in that the control element is capable of interacting also with the member for controlling the flow rate of gas in order to ensure both the adjustment of the force for opening the valve and the adjustment of the flow rate of outlet gas.

Abstract: Device for supplying breathing gas, particularly for a mouthpiece of a diver, comprising a casing (100) incorporating, between an inlet orifice (21) for the supply gas and an orifice (1) for the outlet of the gas for the purpose of breathing: a pressure-reducing valve system (3, 4, 5) comprising a member (4, 31) for controlling the force necessary to open the said valve, a member (2, 20) for controlling the flow rate of gas let into the outlet orifice (1), the supply device also comprising a manually actuatable control element (9) capable of interacting with the control member (4, 31) in order to adjust the force necessary to open the valve, characterized in that the said control element (9) is capable of interacting also with the member (2, 20) for controlling the flow rate of gas in order to ensure both the adjustment of the force for opening the valve (5) and the adjustment of the flow rate of outlet gas.