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Technical Info: Friction of an Air Hose

Friction of Air Hose (including drop through standard hose fitting)

Flow CF/M	10' (1/4")	8' (5/16")	10' (3/8")	12.5' (1/2")	25' (1/2")	50' (1/2")	12.5' (3/4")	25' (3/4")
10 to 11	5.0	0.9
11 to 12	5.9	1.0
12 to 13	6.8	1.2	0.4
13 to 14	8.0	1.4	0.5
14 to 15	9.3	1.6	0.6
15 to 16		1.9	0.7
16 to 18		2.4	0.8
18 to 20		3.0	1.0
20 to 25		4.3	1.4	0.7	1.0	1.3
25 to 30		6.6	2.1	1.0	1.5	2.3
30 to 35		9.5	3.1	1.3	2.1	3.6
35 to 40			4.2	1.7	2.8	5.2
40 to 50			6.3	2.4	4.1	8.0
50 to 60			9.6	3.7	6.3
60 to 70				5.3	9.0		0.9	1.4
70 to 80				7.1			1.1	1.7
80 to 90				9.0			1.4	2.2
90 to 100							1.7	2.7
100 to 120							2.3	3.5
120 to 140							3.2	4.8
140 to 160							4.3	6.6
160 to 180							5.6	8.7
180 to 200							7.2

Flow CF/M	50' (1/2") or 10' (1/4")	50' (1/2") or 10' (3/8")	50' (1/2") or 8' (5/16")	50' (1/2") or 12 1/2' (1/2")	50' (3/4") or 25' (1/2")	50' (3/4") or 12 1/2' (3/4")
10 to 11	5.3	0.7	1.4
11 to 12	6.2	0.8	1.6
12 to 13	7.2	0.9	1.9
13 to 14	8.4	1.1	2.2
14 to 15	9.8	1.3	2.5
15 to 16		1.5	2.9
16 to 18		1.9	3.5	1.7
18 to 20		2.4	4.5	2.0
20 to 25		3.5	6.4	2.6	1.3
25 to 30		5.2	9.8	3.8	1.9
30 to 35		7.3		5.3	2.6
35 to 40		9.6		7.1	3.5
40 to 50					5.2	1.8
50 to 60					7.8	2.3
60 to 70						3.0
70 to 80						3.7
80 to 90						4.6
90 to 100						5.0
100 to 120						7.9
120 to 140
140 to 160
160 to 180
180 to 200