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|  CHAPTER TWENTY TWO
T-34C AIRCRAFT SYSTEMS FAMILIARIZATION
WORKBOOK
2202. OXYGEN SYSTEM
The oxygen system provides both pilots with a regulated supply of breathing oxygen. Oxygen is
received from a gaseous, diluter-demand supply system which mixes the proper ratio of oxygen
and cockpit air for any altitude.
Figure 22-1 Oxygen System
Oxygen Supply Cylinder
An oxygen supply cylinder located beneath the deck of the aft cockpit serves as a storage tank
for the oxygen. The cylinder has a capacity of 76 cubic feet and a maximum allowable charge of
1850 PSI.
Supply Cylinder Pressure Regulator
A supply cylinder pressure regulator is mounted on the neck of the oxygen supply cylinder. The
pressure regulator reduces the cylinder pressure to 70 PSI and directs the low pressure oxygen
through tubes to the individual cockpit regulators. In addition, the regulator provides ON/OFF
control of the 70 PSI oxygen at the cylinder.
22-2 T-34C OXYGEN SYSTEM
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