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Fluid
Flow Table of Contents | Hydraulic
and Pneumatic Knowledge
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and Services Directory | Fluid
Power Equipment
The following chart contains the maximum recommended flow rates at the given pressure for ANSI schedule 40 pipe. This chart is
applicable for designing compressed air systems.
The flow values in this chart are based on a pressure drop as set forth in the following schedule:
Pressure Drop per 100 Feet of Pipe
Pipe Size - Inches
10% of Applied
Pressure
1/8, 1/4, 3/8, 1/2
5% of Applied
Pressure
3/4, 1, 1-1/4, 1-1/2, 2, 1-1/2, 3
|
Nominal Standard Pipe Size - Inch |
|
Derived Units = Pressure Drop per 100 Feet of Pipe (SCFM) |
Applied Pressure
psig |
1/8 |
1/4 |
3/8 |
1/2 |
3/4 |
1 |
1-1/4 |
1-1/2 |
2 |
2-1/2 |
3 |
| 5 |
0.5 |
1.2 |
2.7 |
4.9 |
6.6 |
13 |
27 |
40 |
80 |
135 |
240 |
| 10 |
0.8 |
1.7 |
3.9 |
7.7 |
11.0 |
21 |
44 |
64 |
125 |
200 |
370 |
| 20 |
1.3 |
3.0 |
6.6 |
13.0 |
18.5 |
35 |
75 |
110 |
215 |
350 |
600 |
| 40 |
2.5 |
5.5 |
12.0 |
23.0 |
34.0 |
62 |
135 |
200 |
385 |
640 |
1100 |
| 60 |
3.5 |
8.0 |
18.0 |
34.0 |
50.0 |
93 |
195 |
290 |
560 |
900 |
1600 |
| 80 |
4.7 |
10.5 |
23.0 |
44.0 |
65.0 |
120 |
255 |
390 |
720 |
1200 |
2100 |
| 100 |
5.8 |
13.0 |
29.0 |
54.0 |
80.0 |
150 |
315 |
470 |
900 |
1450 |
2600 |
| 150 |
8.6 |
20.0 |
41.0 |
80.0 |
115.0 |
220 |
460 |
680 |
1350 |
2200 |
3900 |
| 200 |
11.5 |
26.0 |
58.0 |
108.0 |
155.0 |
290 |
620 |
910 |
1750 |
2800 |
5000 |
| 250 |
14.5 |
33.0 |
73.0 |
135.0 |
200.0 |
370 |
770 |
1150 |
2200 |
3500 |
61000 |
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