Description
AirXpress One/AirXpress 2 Fire
11
GB
GB
Demand valve
2.5.
The AX demand valve is a lung governed demand valve for a compressed air breathing apparatus. It is connected
between compressed air supply and full-face mask and controls the inhaled and exhaled air.
WARNING
The AX demand is not an independent breathing apparatus. It must be used exclusively mounted on a full-face
mask. The AX demand is not suitable for underwater diving.
Fig. 9
Demand valve
1 Medium pressure hose
2 Exhaust button
3 Port of mask
4 Operating button
Don’t push operating button and exhaust button at the same time. Don’t press down the red and black
button during the use, because pushing both button can disconnect the demand valve from the mask.
The outer housing of the demand valve is made of high strength engineering plastic to endure possible collision. The
demand valve must be used with full mask.
Medium pressure hose
2.6.
The explosion pressure for medium pressure hose is not less than four times of the reducer output pressure. Connection
of the medium pressure hose with the demand valve is flexible and swiveling, which can automatically fit head movement
of the operator.
High pressure hose
2.7.
A high pressure gauge is connected with the high pressure hose. The pressure gauge surface is luminescent, so the
pressure display can be viewed clearly even in the dark. Connection of the pressure gauge and the high pressure hose is
swiveling and can turn in 360°, this makes easy for the operator to view the pressure gauge at any position.
There is a small hole in the high pressure hose, which is safety hole. In case there is leak from the high
pressure hose, air will be released from the small safety hole, thus to avoid the high pressure hose from
exploding.
1
3
2
4
