| 摘要 |
A regulator assembly for a breathing mask of an aircraft crew member, comprising: a casing forming a support, a mode selection knob mounted on the support so as to be movable between a first position and a second position and comprising a protruding portion prompting the user to place the mode selection knob in the first position, a regulator adapted to supply breathing gas to a breathing cavity in the following two operating modes: in said first position, the regulator supplies gas to the breathing cavity as long as the pressure in the breathing cavity is not greater than a first pressure, in said second position, the regulator supplies gas to the breathing cavity as long as the pressure in the breathing cavity is not greater than a second pressure that is less than the first pressure. |
