MIL-PRF-83178C
TABLE II. Added oxygen
Pressure Altitude Ratio of oxygen added with diluter lever in the normal oxygen position
(x1,000 ft)
(%)
1 to 14 LPM
15 to 50 LPM
51 to 85 LPM
86 to 135 LPM
0
0 to 100
0 to 30
0 to 30
-
5
1 to 100
1 to 33
1 to 33
-
10
6 to 100
6 to 35
6 to 27
6 to 35
15
14 to 100
14 to 42
14 to 30
14 to 45
20
24 to 100
24 to 55
24 to 55
24 to 55
25
40 to 100
40 to 80
40 to 80
40 to 90
28
60 to 100
60 to 100
60 to 100
60 to 100
32
98 to 100
98 to 100
98 to 100
98 to 100
Ratio of oxygen added with diluter lever in 100% oxygen position
(%)
All altitudes
98 to 100
98 to10
98 to 100
98 to 100
TABLE III. Pressure breathing characteristics
Pressure altitude
Outlet pressure at 10 LPM
(x 1,000 ft)
(inches of water)
27
-0.45 to 1.0
30
0.01 to 2.5
32
0.01 to 2.8
34
0.01 to 3.0
36
0.01 to 3.2
38
0.01 to 3.4
39
0.30 to 3.5
40
0.30 to5.6
41
2.00 to 7.2
42
3.40 to 8.6
43
5.30 to 10.2
47
11.20 to 15.3
3.6.12.1 Pressure ranges. With either increasing or decreasing flow, and the diluter lever
in the normal oxygen position, the outlet pressure in the given ranges of table III shall meet the
tolerances at the flow variations in table IV.
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