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SECTION 15 − AIR COMPRESSOR TABLES
15-1. Flow Of Free Air (CFM) Through Orifices Of Various Diameters
Gauge Pressure (psi)
1
2
3
5
10
15
20
25
30
35
40
45
50
60
70
80
90
100
110
120
130
140
150
175
200
OM-267603 Page 88
Orifice Diameter (in) And Free Air Flow (CFM)
1/64
1/32
3/64
0.027
0.107
0.242
0.038
0.153
0.342
0.046
0.188
0.471
0.059
0.242
0.545
0.084
0.342
0.77
0.103
0.418
0.94
0.119
0.485
1.07
0.133
0.54
1.21
0.156
0.632
1.40
0.173
0.71
1.56
0.19
0.77
1.71
0.208
0.843
1.9
0.225
9.14
2.05
0.26
1.05
2.35
0.295
1.19
2.68
0.33
1.33
2.97
0.364
1.47
3.28
0.40
1.61
3.66
0.43
1.76
3.95
0.47
1.90
4.27
0.50
2.04
4.57
0.54
2.17
4.87
0.57
2.33
5.2
0.66
2.65
5.94
0.76
3.07
6.90
1/16
3/32
1/8
0.430
0.97
1.72
0.607
1.36
2.43
0.750
1.68
2.98
0.965
2.18
3.86
1.36
3.08
5.45
1.67
3.75
6.65
1.93
4.25
7.7
2.16
4.75
8.6
2.52
5.6
10.0
2.80
6.2
11.2
3.07
6.8
12.3
3.36
7.6
13.4
3.64
8.2
14.5
4.2
9.4
16.8
4.76
10.7
19.0
5.32
11.9
21.2
5.87
13.1
23.5
6.45
14.5
25.8
7.00
15.7
28.0
7.58
17.0
30.2
8.13
18.2
32.4
8.68
19.5
34.5
9.20
20.7
36.7
10.6
23.8
42.1
12.2
27.5
48.7
3/16
1/4
3.86
6.85
5.42
9.74
6.71
11.9
8.71
15.4
12.3
21.8
15.0
26.7
17.1
30.8
19.4
34.5
22.5
40.0
25.0
44.7
27.3
49.1
30.3
53.8
32.8
58.2
37.5
67.0
43.0
76.0
47.5
85.0
52.5
94.0
58.3
103.0
63.0
112.0
68.0
121.0
73.0
130.0
78.0
138.0
83.0
147.0
95.0
169.0
110.0
195.0
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