New Contact Information: General Inquiries contact [email protected] and Sales contact [email protected]

X

(320) 796-0851

Castair

AIR DISTRIBUTION PIPING

Pipe Size Selection for Compressed Air Lines
Free Air C.F.M. Equivalent length of pipe lines in feet
25 50 75 100 150 200 250 300
1 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2
2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2
3 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2
5 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2
10 1/2 1/2 1/2 3/4 3/4 3/4 3/4 3/4
15 1/2 3/4 3/4 3/4 3/4 3/4 3/4 3/4
20 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4
25 3/4 3/4 3/4 3/4 3/4 1 1 1
30 3/4 3/4 3/4 3/4 1 1 1 1
35 3/4 3/4 1 1 1 1 1 1
40 3/4 1 1 1 1 1 1 1
50 1 1 1 1 1 1 1 1
60 1 1 1 1 1-1/4 1-1/4 1-1/4 1-1/4
70 1 1 1 1 1-1/4 1-1/4 1-1/4 1-1/4
80 1-1/4 1-1/4 1-1/4 1-1/4 1-1/2 1-1/2 1-1/2 1-1/2
100 1-1/4 1-1/4 1-1/4 1-1/4 1-1/2 1-1/2 1-1/2 1-1/2
125 1-1/4 1-1/4 1-1/4 1-1/4 1-1/2 1-1/2 1-1/2 1-1/2
150 1-1/4 1-1/4 1-1/4 1-1/4 1-1/2 1-1/2 1-1/2 1-1/2
175 1-1/2 1-1/2 1-1/2 1-1/2 2 2 2 2
200 1-1/2 1-1/2 1-1/2 1-1/2 2 2 2 2
225 1-1/2 1-1/2 1-1/2 1-1/2 2 2 2 2
250 2 2 2 2 2 2 2 2
275 2 2 2 2 2 2 2-1/2 2-1/2
300 2 2 2 2 2 2 2-1/2 2-1/2
350 2 2 2 2 2-1/2 2-1/2 2-1/2 2-1/2
400 2 2 2 2 2-1/2 2-1/2 2-1/2 2-1/2
450 2-1/2 2-1/2 2-1/2 2-1/2 2-1/2 2-1/2 3 3
500 2-1/2 2-1/2 2-1/2 2-1/2 2-1/2 2-1/2 3 3
550 2-1/2 2-1/2 2-1/2 2-1/2 3 3 3 3
600 2-1/2 2-1/2 2-1/2 2-1/2 3 3 3 3
750 2-1/2 2-1/2 2-1/2 3 3 3 3 4
1000 3 3 3 3 3 3 4 4

Check all piping & fittings regularly to avoid leaks in the system.

AIR FLOW CHART

Gauge Pres. in receiver Flow of free air (cfm) through orifices of various diameters
(LBs.) 1/64” 1/32” 3/64” 1/16” 3/32” 1/8” 3/16” 1/4”
1 .027 .107 .242 .430 .97 1.72 3.86 6.85
2 .038 .153 .342 .607 1.36 2.43 5.42 9.74
3 .046 .188 .471 .750 1.68 2.98 6.71 11.9
5 .059 .242 .545 .965 2.18 3.86 8.71 15.4
10 .084 .342 .77 1.36 3.08 5.45 12.3 21.8
15 .103 .418 .94 1.67 3.75 6.65 15.0 26.7
20 .119 .485 1.07 1.93 4.25 7.7 17.1 30.8
25 .133 .54 1.21 2.16 4.75 8.6 19.4 34.5
30 .156 .632 1.40 2.52 5.6 10. 22.5 40.0
35 .173 .71 1.56 2.80 6.2 11.2 25.0 44.7
40 .19 .77 1.71 3.07 6.8 12.3 27.5 49.1
45 .208 .843 1.9 3.36 7.6 13.4 30.3 53.8
50 .225 .914 2.05 3.64 8.2 14.5 32.8 58.2
60 .26 1.05 2.35 4.2 9.4 16.8 37.5 67
70 .295 1.19 2.68 4.76 10.7 19.0 43.0 76
80 .33 1.33 2.97 5.32 11.9 21.2 47.5 85
90 .364 1.47 3.28 5.87 13.1 23.5 52.5 94
100 .40 1.61 3.66 6.45 14.5 25.8 58.3 103
110 .43 1.76 3.95 7.00 15.7 28.0 63 112
120 .47 1.90 4.27 7.58 17.0 30.2 68 121
130 .50 2.04 4.57 8.13 18.2 32.4 73 130
140 .54 2.17 4.87 8.68 19.5 34.5 78 138
150 .57 2.33 5.20 9.20 20.7 36.7 83 147
175 .66 2.65 5.94 10.6 23.8 42.1 95 169
200 .76 3.07 6.90 12.2 27.5 48.7 110 195