Page 48 - 2018_IFGC

GAS PIPING INSTALLATIONS

TABLE 402.4(3) Gas Natural
SCHEDULE 40 METALLIC PIPE Inlet Pressure Less than 2 psi
Pressure Drop 3.0 in. w.c.
Specific Gravity 0.60

INTENDED USE: INITIAL SUPPLY PRESSURE OF 8.0-INCH W.C. OR GREATER
PIPE SIZE (inch)
1
Nominal 1 / 2 3 / 4 1 1 1 / 4 1 / 2 2 2 1 / 2 3 4
Actual ID 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026
Length (ft) Capacity in Cubic Feet of Gas Per Hour
10 454 949 1,790 3,670 5,500 10,600 16,900 29,800 60,800
20 312 652 1,230 2,520 3,780 7,280 11,600 20,500 41,800
30 250 524 986 2,030 3,030 5,840 9,310 16,500 33,600
40 214 448 844 1,730 2,600 5,000 7,970 14,100 28,700
50 190 397 748 1,540 2,300 4,430 7,070 12,500 25,500
60 172 360 678 1,390 2,090 4,020 6,400 11,300 23,100
70 158 331 624 1,280 1,920 3,700 5,890 10,400 21,200
80 147 308 580 1,190 1,790 3,440 5,480 9,690 19,800
90 138 289 544 1,120 1,680 3,230 5,140 9,090 18,500
100 131 273 514 1,060 1,580 3,050 4,860 8,580 17,500
125 116 242 456 936 1,400 2,700 4,300 7,610 15,500
150 105 219 413 848 1,270 2,450 3,900 6,890 14,100
175 96 202 380 780 1,170 2,250 3,590 6,340 12,900
200 90 188 353 726 1,090 2,090 3,340 5,900 12,000
250 80 166 313 643 964 1,860 2,960 5,230 10,700
300 72 151 284 583 873 1,680 2,680 4,740 9,700
350 66 139 261 536 803 1,550 2,470 4,360 8,900
400 62 129 243 499 747 1,440 2,290 4,060 8,300
450 58 121 228 468 701 1,350 2,150 3,800 7,800
500 55 114 215 442 662 1,280 2,030 3,590 7,300
550 52 109 204 420 629 1,210 1,930 3,410 7,000
600 50 104 195 400 600 1,160 1,840 3,260 6,640
650 47 99 187 384 575 1,110 1,760 3,120 6,360
700 46 95 179 368 552 1,060 1,700 3,000 6,110
750 44 92 173 355 532 1,020 1,630 2,890 5,890
800 42 89 167 343 514 989 1,580 2,790 5,680
850 41 86 162 332 497 957 1,530 2,700 5,500
900 40 83 157 322 482 928 1,480 2,620 5,330
950 39 81 152 312 468 901 1,440 2,540 5,180
1,000 38 79 148 304 455 877 1,400 2,470 5,040
1,100 36 75 141 289 432 833 1,330 2,350 4,780
1,200 34 71 134 275 412 794 1,270 2,240 4,560
1,300 33 68 128 264 395 761 1,210 2,140 4,370
1,400 31 65 123 253 379 731 1,170 2,060 4,200
1,500 30 63 119 244 366 704 1,120 1,980 4,050
1,600 29 61 115 236 353 680 1,080 1,920 3,910
1,700 28 59 111 228 342 658 1,050 1,850 3,780
1,800 27 57 108 221 331 638 1,020 1,800 3,670
1,900 27 56 105 215 322 619 987 1,750 3,560
2,000 26 54 102 209 313 602 960 1,700 3,460
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa,
3
1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m /h, 1 degree = 0.01745 rad.
Note: Table entries have been rounded to three significant digits.

2018 INTERNATIONAL FUEL GAS CODE ® 35
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