The exact location of the demand regulators in a ship is variable,
depending upon the model, place of installation, etc. It is extremely
important that you familiarize yourself with the location of the
regulators in your ship, so that you can move from one to the other in
darkness, in case of emergency. Many of the B-24 H models have two extra
regulators: one in the nose, and one in the tail. There is also
variation in the location of the portable recharging hose for the
top-turret bottles. This is located in the right side of the ship in
most earlier models, but in the left side in later models.
Fundamentally, however, the system in all ships commencing with No.
42-40218, is as described above. It is up to you to familiarize yourself
with any minor differences in your ship.
[Illustration: Fig. 11 OXYGEN SYSTEM B-24J MODIFIED]
[Illustration: Fig. 12 OXYGEN SYSTEM B-24D to H]