Air Line Pipe

Recommended sizes - air pressure 100 psi

Air line pipe, recommended sizes with schedule 40 steel pipes, air pressure 100 psi (6.9 bar) are indicated below.

Pipe Size (inches)
Free Air Flow
(cfm)
Length of Pipe (feet)
25 50 75 100 150 200 250
5 1/2 1/2 1/2 1/2 1/2 1/2 1/2
10 1/2 1/2 1/2 1/2 1/2 1/2 1/2
15 1/2 1/2 1/2 1/2 3/4 3/4 3/4
20 1/2 1/2 3/4 3/4 3/4 3/4 3/4
25 1/2 3/4 3/4 3/4 3/4 1 1
30 1/2 3/4 3/4 3/4 1 1 1
35 3/4 3/4 3/4 3/4 1 1 1
40 3/4 3/4 3/4 1 1 1 1
45 3/4 3/4 1 1 1 1 1 1/4
50 3/4 1 1 1 1 1 1/4 1 1/4
55 3/4 1 1 1 1 1/4 1 1/4 1 1/4
60 3/4 1 1 1 1 1/4 1 1/4 1 1/4
65 3/4 1 1 1 1 1/4 1 1/4 1 1/4
70 3/4 1 1 1 1/4 1 1/4 1 1/4 1 1/4
75 1 1 1 1 1/4 1 1/4 1 1/4 1 1/4
80 1 1 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4
85 1 1 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4
90 1 1 1 1/4 1 1/4 1 1/4 1 1/4 1 1/2
95 1 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 1 1/2
100 1 1 1/4 1 1/4 1 1/4 1 1/4 1 1/2 1 1/2

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