Compressed Air Piping - Pressure Loss Diagrams, Imperial Units

Pressure drop in compressed air pipelines with applied pressure 50, 100 and 150 psi.

Pipe Size (inches)	Flow Rate (CFM)	Pressure Drop @ 50 psi (psi/100ft)	Pressure Drop @ 100 psi (psi/100ft)	Pressure Drop @ 150 psi (psi/100ft)
1/4	10	27.0	21.6	18.2
1/4	20	106.0	84.8	71.6
3/8	10	8.1	6.5	5.5
3/8	20	32.2	25.8	21.9
3/8	40	72.0	57.6	48.7
1/2	20	10.2	8.2	6.9
1/2	40	40.8	32.6	27.6
1/2	60	91.8	73.4	62.1
3/4	40	9.1	7.3	6.2
3/4	60	20.4	16.3	13.8
3/4	100	56.6	45.3	38.3
1	60	5.7	4.6	3.9
1	100	15.8	12.6	10.7
1	150	35.6	28.5	24.1
1-1/4	100	7.1	5.7	4.8
1-1/4	150	16.0	12.8	10.8
1-1/2	150	7.3	5.8	4.9
1-1/2	200	13.0	10.4	8.8
2	200	4.5	3.6	3.1
2	300	10.1	8.1	6.8