Pressure Drop in Pounds for Each 100 Feet of Straight Pipe

Nominal Pipe SizeSCFH Free AirLine Pressure - PSIG
10153050100150200250
1/2” Schedule
40		500
750
1,000
1,500
2,000		1.501.00
2.10
3.60		.70
1.40
2.50
5.40		.40
.80
1.40
3.10
5.30		.30
.60
1.00
2.10
3.70		.20
.40
.80
1.60
2.80		.20
.40
.60
1.30
2.30
3/4” Schedule
40		500
1,000
1,750
2,500
4,000		.40
1.60		.40
1.30		.20
.90
2.50
5.00		.20
.60
1.70
3.40		.30
1.00
1.90
4.70		.20
.70
1.40
3.40		.20
.50
1.00
2.60		.20
.40
.80
2.10
1” Schedule
40		1,000
1,750
2,500
3,750
5,000
7,500		.50
1.30		.40
1.10		.30
.70
1.40
3.10		.20
.50
1.00
2.10
3.70		.10
.30
.60
1.20
2.10
4.60		.20
.40
.80
1.50
3.20		.20
.30
.70
1.10
2.50		.10
.20
.50
.90
2.00
1-1/2” Schedule
40		2,500
3,700
5,000
7,500
10,000
12,500		.30
.70
1.10		.30
.50
.90
2.00		.20
.40
.60
1.40
2.40
3.70		.10
.30
.40
.90
1.60
2.50		.10
.20
.50
.90
1.40		.10
.20
.40
.60
1.00		.10
.30
.50
.80		.10
.20
.40
.60
2” Schedule
40		3,750
5,000
7,500
10,000
12,500
15,000		.20
.30
.70
1.20		.20
.20
.60
1.00
1.50		.10
.20
.40
.70
1.00
1.50		.10
.30
.50
.70
1.00		.20
.30
.40
.60		.10
.20
.30
.40		.10
.20
.30		.10
.20
.30

Calculating Pressure Drop (Loss) in Pounds for Other Pipe Lengths:

Shorter Than 100 Feet

The friction loss in pipe lengths shorter than 100 feet may be calculated proportionally to the length.

Example: for 50 feet, ½ the charted figure.

Over 100 Feet

In pipe runs of more than 100 feet, the same proportional method may be used providing the resultant friction loss does not exceed 10 PSIG.

Example: For 150 feet, 1.5 times the charted figure

*Please note: Data provided is for reference only, please call us at 800-651-9490 for engineering assistanceView Superior Products Manifolds and Accessories