SIZE PIPE @ 1/4 PSI DROP/100 FEET OR LESS

FREE

COMPRESSED

PIPE SIZE

AIR

AIR

1/8"

1/4"

3/8"

1/2"

3/4"

1"

1-1/4"

1-1/2"

2"

CFM

CFM @ 100 PSIG

PRESSURE DROP OF AIR, PSI, PER 100 FEET OF SCH 40 PIPE @100 PSIG, 60 DEG F.

1

0.128

0.361

0.083

0.018

2

0.256

1.310

0.285

0.064

0.020

3

0.384

3.060

0.605

0.133

0.042

4

0.513

4.830

1.040

0.226

0.071

3/4"

5

0.640

7.450

1.580

0.343

0.106

0.027

6

0.769

10.600

2.230

0.408

0.148

0.037

1"

8

1.025

18.600

3.890

0.848

0.255

0.062

0.019

10

1.282

28.700

5.960

1.260

0.356

0.094

0.029

15

1.922

13.000

2.730

0.834

0.201

0.062

1 1/4"

20

2.563