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Pipe Capacities For Propane and Natural Gas
Pipe Capacities For Propane in Thousands of BTUs Per Hour
For pressure drop of 0.5” W.C., based on low-pressure piping based on 6 oz. per
sq. in. pressure. Based on one Cubic Foot of Propane = 2500 BTUs.
LENGTH OF STRAIGHT PIPE IN FEET
SIZE
PIPE
INCHES
15 30 45 60 75 90 105 120 150 180 210 240 270 300 450 600
150 137.5 125 115 107.5 102.5 95 80 67.5
315 282.5 252.5 237.5 220 205 197.5 157.5 137.5
542.5 487.5 440 410 385 362.5 347.5 282.5 237.5
857.5 772.5 700 645 607.5 575 542.5 440 377.5
1732.5 1575 1417.5 1322.5 1245 1165 1117.5 897.5 770
4882.5 4252.5 3937.5 3622.5 3387.5 3232.5 3072.5 2520 2127.5
½
¾
1
1¼
1 ½
2
3
4
105
425
787.5
1542.5
2425
5040
13545
28035
77.5
300
615
1070
1700
3490
9607.5
19687.5
65
245
505
882.5
1402.5
2835
7875
16222.5
55
212.5
440
770
1212.5
2520
6772.5
14017.5
50
190
395
677.5
1070
2205
5985
12600
45
172.5
362.5
630
977.5
2047.5
5512.5
11497.5
40
160
330
582.5
912.5
1890
5197.5
10710 9922.5 8820 8032.5 7560 6930 6615 6300 5040 4410
Pipe Capacities For Natural Gas In Thousands of BTUs Per Hour
For pressure drop of 0.5” W.C. pressure. Based on one Cubic Foot on Natural
Gas = 100 BTUs.
LENGTH OF STRAIGHT PIPE IN FEET
SIZE
PIPE
INCHES
10 20 30 40 50 60 70 80 90 100 125 150 175 200 300 400 500 600 700 800 1000
½ 170 118 95 80 71 64 60 55 52 49 44 40 37 34 27 23 21 19
¾ 360 245 198 169 150 135 123 115 108 102 92 83 77 71 57 48 43 39
1 540 440 325 285 250 225 215 195 185 177 155 140 130 120 100 80 70 65 57 48 40
1 ¼ 1125 790 660 570 510 465 440 410 390 375 355 305 280 260 205 180 165 140 125 115 100
1 ½ 1700 1200 1000 865 780 720 670 620 600 570 510 455 430 400 315 265 240 215 195 180 150
2 3100 2225 1855 1600 1450 1375 1250 1175 1120 1075 970 880 820 760 610 530 470 420 390 365 320
2 ½ 5040 3525 3000 2600 2350 2175 2025 1890 1810 1745 1570 1420 1315 1225 995 845 740 660 620 570 500
3 9100 6500 5300 4600 4435 3780 3530 3290 3140 3020 2905 2840 2450 2140 1640 1385 1210 1085 930 900 760
3 ½ 9500 7880 6780 6140 5670 5280 4940 4685 4300 4000 3660 3380 3185 2500 2300 1890 1690 1545 1445 1245
4 9450 8500 7880 7325 6870 6550 6300 5600 5125 4760 4400 3145 3010 2870 2670 2400 2100 1800