A gas flow regulator comprising a body comprising a gas duct comprising an upstream end configured to be connected to a source of gas and a downstream end comprising an outlet connector and configured to be connected to a user of the gas with a regulated flow rate, the gas duct also comprising a flow regulator for selective regulation of the flow of the gas flowing between the upstream end and the downstream end, the flow regulator comprising a manual control member configured to be movable relative to the body and cooperating with the flow regulator to control the flow rate of gas, with the flow rate indicated by the position of the manual control member relative to the body, wherein the manual control member comprises a grasping peripheral wall delimiting a central hollow volume open toward the exterior of the regulator and wherein the outlet connector is situated in and opens into the central hollow volume, the hollow volume being delimited by a wall of the manual control member forming a protective enclosure around the outlet connector and spaced from the latter.