UpCodes logo
// CODE SNIPPET

1215.2 Sizing of Gas Piping Systems

2021 Oregon Plumbing Specialty Code > 12 Fuel Gas Piping > 1215.0 Required Gas Piping Size > 1215.2 Sizing of Gas Piping Systems
Go To Full Code Chapter
Sizing of piping systems shall be in accordance with Section 1215.2.1 for natural gas piping systems and Section 1215.2.2 for propane piping systems.

TABLE 1215.2(1)
SCHEDULE 40 METALLIC PIPE [NFPA 54:TABLE 6.2.1(b)]1, 2
  GAS: NATURAL
INLET PRESSURE: LESS THAN 2 psi
PRESSURE DROP: 0.5 in. w.c.
SPECIFIC GRAVITY: 0.60
  PIPE SIZE (inch)
NOMINAL: 1/2 3/4 1 11/4 11/2 2 21/2 3 4 5 6 8 10 12
ACTUAL ID: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026 5.047 6.065 7.981 10.020 11.938
LENGTH
(feet)		 CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 172 360 678 1390 2090 4020 6400 11 300 23 100 41 800 67 600 139 000 252 000 399 000
20 118 247 466 957 1430 2760 4400 7780 15 900 28 700 46 500 95 500 173 000 275 000
30 95 199 374 768 1150 2220 3530 6250 12 700 23 000 37 300 76 700 139 000 220 000
40 81 170 320 657 985 1900 3020 5350 10 900 19 700 31 900 65 600 119 000 189 000
50 72 151 284 583 873 1680 2680 4740 9660 17 500 28 300 58 200 106 000 167 000
60 65 137 257 528 791 1520 2430 4290 8760 15 800 25 600 52 700 95 700 152 000
70 60 126 237 486 728 1400 2230 3950 8050 14 600 23 600 48 500 88 100 139 000
80 56 117 220 452 677 1300 2080 3670 7490 13 600 22 000 45 100 81 900 130 000
90 52 110 207 424 635 1220 1950 3450 7030 12 700 20 600 42 300 76 900 122 000
100 50 104 195 400 600 1160 1840 3260 6640 12 000 19 500 40 000 72 600 115 000
125 44 92 173 355 532 1020 1630 2890 5890 10 600 17 200 35 400 64 300 102 000
150 40 83 157 322 482 928 1480 2610 5330 9650 15 600 32 100 58 300 92 300
175 37 77 144 296 443 854 1360 2410 4910 8880 14 400 29 500 53 600 84 900
200 34 71 134 275 412 794 1270 2240 4560 8260 13 400 27 500 49 900 79 000
250 30 63 119 244 366 704 1120 1980 4050 7320 11 900 24 300 44 200 70 000
300 27 57 108 221 331 638 1020 1800 3670 6630 10 700 22 100 40 100 63 400
350 25 53 99 203 305 587 935 1650 3370 6100 9880 20 300 36 900 58 400
400 23 49 92 189 283 546 870 1540 3140 5680 9190 18 900 34 300 54 300
450 22 46 86 177 266 512 816 1440 2940 5330 8620 17 700 32 200 50 900
500 21 43 82 168 251 484 771 1360 2780 5030 8150 16 700 30 400 48 100
550 20 41 78 159 239 459 732 1290 2640 4780 7740 15 900 28 900 45 700
600 19 39 74 152 228 438 699 1240 2520 4560 7380 15 200 27 500 43 600
650 18 38 71 145 218 420 669 1180 2410 4360 7070 14 500 26 400 41 800
700 17 36 68 140 209 403 643 1140 2320 4190 6790 14 000 25 300 40 100
750 17 35 66 135 202 389 619 1090 2230 4040 6540 13 400 24 400 38 600
800 16 34 63 130 195 375 598 1060 2160 3900 6320 13 000 23 600 37 300
850 16 33 61 126 189 363 579 1020 2090 3780 6110 12 600 22 800 36 100
900 15 32 59 122 183 352 561 992 2020 3660 5930 12 200 22 100 35 000
950 15 31 58 118 178 342 545 963 1960 3550 5760 11 800 21 500 34 000
1000 14 30 56 115 173 333 530 937 1910 3460 5600 11 500 20 900 33 100
1100 14 28 53 109 164 316 503 890 1810 3280 5320 10 900 19 800 31 400
1200 13 27 51 104 156 301 480 849 1730 3130 5070 10 400 18 900 30 000
1300 12 26 49 100 150 289 460 813 1660 3000 4860 9980 18 100 28 700
1400 12 25 47 96 144 277 442 781 1590 2880 4670 9590 17 400 27 600
1500 11 24 45 93 139 267 426 752 1530 2780 4500 9240 16 800 26 600
1600 11 23 44 89 134 258 411 727 1480 2680 4340 8920 16 200 25 600
1700 11 22 42 86 130 250 398 703 1430 2590 4200 8630 15 700 24 800
1800 10 22 41 84 126 242 386 682 1390 2520 4070 8370 15 200 24 100
1900 10 21 40 81 122 235 375 662 1350 2440 3960 8130 14 800 23 400
2000 NA 20 39 79 119 229 364 644 1310 2380 3850 7910 14 400 22 700
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa
Notes:
1 Table entries are rounded to 3 significant digits.
2 NA means a flow of less than 10 ft3/h (0.283 m3/h).
TABLE 1215.2(2)
SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.2.1(c)]*
  GAS: NATURAL
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 IN. W.C. OR GREATER
  PIPE SIZE (inch)
NOMINAL: 1/2 3/4 1 11/4 11/2 2 21/2 3 4
ACTUAL ID: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026
LENGTH
(feet)		 CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 454 949 1790 3670 5500 10 600 16 900 29 800 60 800
20 312 652 1230 2520 3780 7280 11 600 20 500 41 800
30 250 524 986 2030 3030 5840 9310 16 500 33 600
40 214 448 844 1730 2600 5000 7970 14 100 28 700
50 190 397 748 1540 2300 4430 7060 12 500 25 500
60 172 360 678 1390 2090 4020 6400 11 300 23 100
70 158 331 624 1280 1920 3690 5890 10 400 21 200
80 147 308 580 1190 1790 3440 5480 9690 19 800
90 138 289 544 1120 1670 3230 5140 9090 18 500
100 131 273 514 1060 1580 3050 4860 8580 17 500
125 116 242 456 936 1400 2700 4300 7610 15 500
150 105 219 413 848 1270 2450 3900 6890 14 100
175 96 202 380 780 1170 2250 3590 6340 12 900
200 90 188 353 726 1090 2090 3340 5900 12 000
250 80 166 313 643 964 1860 2960 5230 10 700
300 72 151 284 583 873 1680 2680 4740 9660
350 66 139 261 536 803 1550 2470 4360 8890
400 62 129 243 499 747 1440 2290 4050 8270
450 58 121 228 468 701 1350 2150 3800 7760
500 55 114 215 442 662 1280 2030 3590 7330
550 52 109 204 420 629 1210 1930 3410 6960
600 50 104 195 400 600 1160 1840 3260 6640
650 47 99 187 384 575 1110 1760 3120 6360
700 46 95 179 368 552 1060 1690 3000 6110
750 44 92 173 355 532 1020 1630 2890 5890
800 42 89 167 343 514 989 1580 2790 5680
850 41 86 162 332 497 957 1530 2700 5500
900 40 83 157 322 482 928 1480 2610 5330
950 39 81 152 312 468 901 1440 2540 5180
1000 38 79 148 304 455 877 1400 2470 5040
1100 36 75 141 289 432 833 1330 2350 4780
1200 34 71 134 275 412 794 1270 2240 4560
1300 33 68 128 264 395 761 1210 2140 4370
1400 31 65 123 253 379 731 1160 2060 4200
1500 30 63 119 244 366 704 1120 1980 4050
1600 29 61 115 236 353 680 1080 1920 3910
1700 28 59 111 228 342 658 1050 1850 3780
1800 27 57 108 221 331 638 1020 1800 3670
1900 27 56 105 215 322 619 987 1750 3560
2000 26 54 102 209 313 602 960 1700 3460
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa
* Table entries are rounded to 3 significant digits.
TABLE 1215.2(3)
SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.2.1(d)]*
  GAS: NATURAL
INLET PRESSURE: LESS THAN 2 psi
PRESSURE DROP: 6.0 in. w.c.
SPECIFIC GRAVITY: 0.60
INTENDED USE: INITIAL SUPPLY PRESSURE OF 11.0 IN. W.C. OR GREATER
  PIPE SIZE (inch)
NOMINAL: 1/2 3/4 1 11/4 11/2 2 21/2 3 4
ACTUAL ID: 0.622 0.824 1.049 1.38 1.61 2.067 2.469 3.068 4.026
LENGTH
(feet)		 CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 660 1380 2600 5340 8000 15 400 24 600 43 400 88 500
20 454 949 1790 3670 5500 10 600 16 900 29 800 60 800
30 364 762 1440 2950 4410 8500 13 600 24 000 48 900
40 312 652 1230 2520 3780 7280 11 600 20 500 41 800
50 276 578 1090 2240 3350 6450 10 300 18 200 37 100
60 250 524 986 2030 3030 5840 9310 16 500 33 600
70 230 482 907 1860 2790 5380 8570 15 100 30 900
80 214 448 844 1730 2600 5000 7970 14 100 28 700
90 201 420 792 1630 2440 4690 7480 13 200 27 000
100 190 397 748 1540 2300 4430 7060 12 500 25 500
125 168 352 663 1360 2040 3930 6260 11 100 22 600
150 153 319 601 1230 1850 3560 5670 10 000 20 500
175 140 293 553 1140 1700 3270 5220 9230 18 800
200 131 273 514 1056 1580 3050 4860 8580 17 500
250 116 242 456 936 1400 2700 4300 7610 15 500
300 105 219 413 848 1270 2450 3900 6890 14 100
350 96 202 380 780 1170 2250 3590 6340 12 900
400 90 188 353 726 1090 2090 3340 5900 12 000
450 84 176 332 681 1020 1960 3130 5540 11 300
500 80 166 313 643 964 1860 2960 5230 10 700
550 76 158 297 611 915 1760 2810 4970 10 100
600 72 151 284 583 873 1680 2680 4740 9660
650 69 144 272 558 836 1610 2570 4540 9250
700 66 139 261 536 803 1550 2470 4360 8890
750 64 134 252 516 774 1490 2380 4200 8560
800 62 129 243 499 747 1440 2290 4050 8270
850 60 125 235 483 723 1390 2220 3920 8000
900 58 121 228 468 701 1350 2150 3800 7760
950 56 118 221 454 681 1310 2090 3690 7540
1000 55 114 215 442 662 1280 2030 3590 7330
1100 52 109 204 420 629 1210 1930 3410 6960
1200 50 104 195 400 600 1160 1840 3260 6640
1300 47 99 187 384 575 1110 1760 3120 6360
1400 46 95 179 368 552 1060 1690 3000 6110
1500 44 92 173 355 532 1020 1630 2890 5890
1600 42 89 167 343 514 989 1580 2790 5680
1700 41 86 162 332 497 957 1530 2700 5500
1800 40 83 157 322 482 928 1480 2610 5330
1900 39 81 152 312 468 901 1440 2540 5180
2000 38 79 148 304 455 877 1400 2470 5040
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa
* Table entries are rounded to 3 significant digits.
TABLE 1215.2(4)
SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.2.1(e)]*
  GAS: NATURAL
INLET PRESSURE: 2.0 psi
PRESSURE DROP: 1.0 psi
SPECIFIC GRAVITY: 0.60
  PIPE SIZE (inch)
NOMINAL: 1/2 3/4 1 11/4 11/2 2 21/2 3 4
ACTUAL ID: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026
LENGTH
(feet)		 CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 1510 3040 5560 11 400 17 100 32 900 52 500 92 800 189 000
20 1070 2150 3930 8070 12 100 23 300 37 100 65 600 134 000
30 869 1760 3210 6590 9880 19 000 30 300 53 600 109 000
40 753 1520 2780 5710 8550 16 500 26 300 46 400 94 700
50 673 1360 2490 5110 7650 14 700 23 500 41 500 84 700
60 615 1240 2270 4660 6980 13 500 21 400 37 900 77 300
70 569 1150 2100 4320 6470 12 500 19 900 35 100 71 600
80 532 1080 1970 4040 6050 11 700 18 600 32 800 67 000
90 502 1010 1850 3810 5700 11 000 17 500 30 900 63 100
100 462 934 1710 3510 5260 10 100 16 100 28 500 58 200
125 414 836 1530 3140 4700 9060 14 400 25 500 52 100
150 372 751 1370 2820 4220 8130 13 000 22 900 46 700
175 344 695 1270 2601 3910 7530 12 000 21 200 43 300
200 318 642 1170 2410 3610 6960 11 100 19 600 40 000
250 279 583 1040 2140 3210 6180 9850 17 400 35 500
300 253 528 945 1940 2910 5600 8920 15 800 32 200
350 232 486 869 1790 2670 5150 8210 14 500 29 600
400 216 452 809 1660 2490 4790 7640 13 500 27 500
450 203 424 759 1560 2330 4500 7170 12 700 25 800
500 192 401 717 1470 2210 4250 6770 12 000 24 400
550 182 381 681 1400 2090 4030 6430 11 400 23 200
600 174 363 650 1330 2000 3850 6130 10 800 22 100
650 166 348 622 1280 1910 3680 5870 10 400 21 200
700 160 334 598 1230 1840 3540 5640 9970 20 300
750 154 322 576 1180 1770 3410 5440 9610 19 600
800 149 311 556 1140 1710 3290 5250 9280 18 900
850 144 301 538 1100 1650 3190 5080 8980 18 300
900 139 292 522 1070 1600 3090 4930 8710 17 800
950 135 283 507 1040 1560 3000 4780 8460 17 200
1000 132 275 493 1010 1520 2920 4650 8220 16 800
1100 125 262 468 960 1440 2770 4420 7810 15 900
1200 119 250 446 917 1370 2640 4220 7450 15 200
1300 114 239 427 878 1320 2530 4040 7140 14 600
1400 110 230 411 843 1260 2430 3880 6860 14 000
1500 106 221 396 812 1220 2340 3740 6600 13 500
1600 102 214 382 784 1180 2260 3610 6380 13 000
1700 99 207 370 759 1140 2190 3490 6170 12 600
1800 96 200 358 736 1100 2120 3390 5980 12 200
1900 93 195 348 715 1070 2060 3290 5810 11 900
2000 91 189 339 695 1040 2010 3200 5650 11 500
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa
* Table entries are rounded to 3 significant digits.
TABLE 1215.2(5)
SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.2.1(f)]*
  GAS: NATURAL
INLET PRESSURE: 3.0 psi
PRESSURE DROP: 2.0 psi
SPECIFIC GRAVITY: 0.60
  PIPE SIZE (inch)
NOMINAL: 1/2 3/4 1 11/4 11/2 2 21/2 3 4
ACTUAL ID: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026
LENGTH
(feet)		 CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 2350 4920 9270 19 000 28 500 54 900 87 500 155 000 316 000
20 1620 3380 6370 13 100 19 600 37 700 60 100 106 000 217 000
30 1300 2720 5110 10 500 15 700 30 300 48 300 85 400 174 000
40 1110 2320 4380 8990 13 500 25 900 41 300 73 100 149 000
50 985 2060 3880 7970 11 900 23 000 36 600 64 800 132 000
60 892 1870 3520 7220 10 800 20 800 33 200 58 700 120 000
70 821 1720 3230 6640 9950 19 200 30 500 54 000 110 000
80 764 1600 3010 6180 9260 17 800 28 400 50 200 102 000
90 717 1500 2820 5800 8680 16 700 26 700 47 100 96 100
100 677 1420 2670 5470 8200 15 800 25 200 44 500 90 800
125 600 1250 2360 4850 7270 14 000 22 300 39 500 80 500
150 544 1140 2140 4400 6590 12 700 20 200 35 700 72 900
175 500 1050 1970 4040 6060 11 700 18 600 32 900 67 100
200 465 973 1830 3760 5640 10 900 17 300 30 600 62 400
250 412 862 1620 3330 5000 9620 15 300 27 100 55 300
300 374 781 1470 3020 4530 8720 13 900 24 600 50 100
350 344 719 1350 2780 4170 8020 12 800 22 600 46 100
400 320 669 1260 2590 3870 7460 11 900 21 000 42 900
450 300 627 1180 2430 3640 7000 11 200 19 700 40 200
500 283 593 1120 2290 3430 6610 10 500 18 600 38 000
550 269 563 1060 2180 3260 6280 10 000 17 700 36 100
600 257 537 1010 2080 3110 5990 9550 16 900 34 400
650 246 514 969 1990 2980 5740 9150 16 200 33 000
700 236 494 931 1910 2860 5510 8790 15 500 31 700
750 228 476 897 1840 2760 5310 8470 15 000 30 500
800 220 460 866 1780 2660 5130 8180 14 500 29 500
850 213 445 838 1720 2580 4960 7910 14 000 28 500
900 206 431 812 1670 2500 4810 7670 13 600 27 700
950 200 419 789 1620 2430 4670 7450 13 200 26 900
1000 195 407 767 1580 2360 4550 7240 12 800 26 100
1100 185 387 729 1500 2240 4320 6890 12 200 24 800
1200 177 369 695 1430 2140 4120 6570 11 600 23 700
1300 169 353 666 1370 2050 3940 6290 11 100 22 700
1400 162 340 640 1310 1970 3790 6040 10 700 21 800
1500 156 327 616 1270 1900 3650 5820 10 300 21 000
1600 151 316 595 1220 1830 3530 5620 10 000 20 300
1700 146 306 576 1180 1770 3410 5440 9610 19 600
1800 142 296 558 1150 1720 3310 5270 9320 19 000
1900 138 288 542 1110 1670 3210 5120 9050 18 400
2000 134 280 527 1080 1620 3120 4980 8800 18 000
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa
* Table entries are rounded to 3 significant digits.
TABLE 1215.2(6)
SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.2.1(g)]*
  GAS: NATURAL
INLET PRESSURE: 5.0 psi
PRESSURE DROP: 3.5 psi
SPECIFIC GRAVITY: 0.60
  PIPE SIZE (inch)
NOMINAL: 1/2 3/4 1 11/4 11/2 2 21/2 3 4
ACTUAL ID: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026
LENGTH
(feet)		 CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 3190 6430 11 800 24 200 36 200 69 700 111 000 196 000 401 000
20 2250 4550 8320 17 100 25 600 49 300 78 600 139 000 283 000
30 1840 3720 6790 14 000 20 900 40 300 64 200 113 000 231 000
40 1590 3220 5880 12 100 18 100 34 900 55 600 98 200 200 000
50 1430 2880 5260 10 800 16 200 31 200 49 700 87 900 179 000
60 1300 2630 4800 9860 14 800 28 500 45 400 80 200 164 000
70 1200 2430 4450 9130 13 700 26 400 42 000 74 300 151 000
80 1150 2330 4260 8540 12 800 24 700 39 300 69 500 142 000
90 1060 2150 3920 8050 12 100 23 200 37 000 65 500 134 000
100 979 1980 3620 7430 11 100 21 400 34 200 60 400 123 000
125 876 1770 3240 6640 9950 19 200 30 600 54 000 110 000
150 786 1590 2910 5960 8940 17 200 27 400 48 500 98 900
175 728 1470 2690 5520 8270 15 900 25 400 44 900 91 600
200 673 1360 2490 5100 7650 14 700 23 500 41 500 84 700
250 558 1170 2200 4510 6760 13 000 20 800 36 700 74 900
300 506 1060 1990 4090 6130 11 800 18 800 33 300 67 800
350 465 973 1830 3760 5640 10 900 17 300 30 600 62 400
400 433 905 1710 3500 5250 10 100 16 100 28 500 58 100
450 406 849 1600 3290 4920 9480 15 100 26 700 54 500
500 384 802 1510 3100 4650 8950 14 300 25 200 51 500
550 364 762 1440 2950 4420 8500 13 600 24 000 48 900
600 348 727 1370 2810 4210 8110 12 900 22 900 46 600
650 333 696 1310 2690 4030 7770 12 400 21 900 44 600
700 320 669 1260 2590 3880 7460 11 900 21 000 42 900
750 308 644 1210 2490 3730 7190 11 500 20 300 41 300
800 298 622 1170 2410 3610 6940 11 100 19 600 39 900
850 288 602 1130 2330 3490 6720 10 700 18 900 38 600
900 279 584 1100 2260 3380 6520 10 400 18 400 37 400
950 271 567 1070 2190 3290 6330 10 100 17 800 36 400
1000 264 551 1040 2130 3200 6150 9810 17 300 35 400
1100 250 524 987 2030 3030 5840 9320 16 500 33 600
1200 239 500 941 1930 2900 5580 8890 15 700 32 000
1300 229 478 901 1850 2770 5340 8510 15 000 30 700
1400 220 460 866 1780 2660 5130 8180 14 500 29 500
1500 212 443 834 1710 2570 4940 7880 13 900 28 400
1600 205 428 806 1650 2480 4770 7610 13 400 27 400
1700 198 414 780 1600 2400 4620 7360 13 000 26 500
1800 192 401 756 1550 2330 4480 7140 12 600 25 700
1900 186 390 734 1510 2260 4350 6930 12 300 25 000
2000 181 379 714 1470 2200 4230 6740 11 900 24 300
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa
* Table entries are rounded to 3 significant digits.
TABLE 1215.2(7)
SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2.1(h)]1, 2
  GAS: NATURAL
INLET PRESSURE: LESS THAN 2 psi
PRESSURE DROP: 0.3 in. w.c.
SPECIFIC GRAVITY: 0.60
  TUBE SIZE (inch)
NOMINAL: K & L: 1/4 3/8 1/2 5/8 3/4 1 11/4 11/2 2
ACR: 3/8 1/2 5/8 3/4 7/8 11/8 13/8 — —
OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125
INSIDE:3 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
LENGTH
(feet)		 CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 20 42 85 148 210 448 806 1270 2650
20 14 29 58 102 144 308 554 873 1820
30 11 23 47 82 116 247 445 701 1460
40 10 20 40 70 99 211 381 600 1250
50 NA 17 35 62 88 187 337 532 1110
60 NA 16 32 56 79 170 306 482 1000
70 NA 14 29 52 73 156 281 443 924
80 NA 13 27 48 68 145 262 413 859
90 NA 13 26 45 64 136 245 387 806
100 NA 12 24 43 60 129 232 366 761
125 NA 11 22 38 53 114 206 324 675
150 NA 10 20 34 48 103 186 294 612
175 NA NA 18 31 45 95 171 270 563
200 NA NA 17 29 41 89 159 251 523
250 NA NA 15 26 37 78 141 223 464
300 NA NA 13 23 33 71 128 202 420
350 NA NA 12 22 31 65 118 186 387
400 NA NA 11 20 28 61 110 173 360
450 NA NA 11 19 27 57 103 162 338
500 NA NA 10 18 25 54 97 153 319
550 NA NA NA 17 24 51 92 145 303
600 NA NA NA 16 23 49 88 139 289
650 NA NA NA 15 22 47 84 133 277
700 NA NA NA 15 21 45 81 128 266
750 NA NA NA 14 20 43 78 123 256
800 NA NA NA 14 20 42 75 119 247
850 NA NA NA 13 19 40 73 115 239
900 NA NA NA 13 18 39 71 111 232
950 NA NA NA 13 18 38 69 108 225
1000 NA NA NA 12 17 37 67 105 219
1100 NA NA NA 12 16 35 63 100 208
1200 NA NA NA 11 16 34 60 95 199
1300 NA NA NA 11 15 32 58 91 190
1400 NA NA NA 10 14 31 56 88 183
1500 NA NA NA NA 14 30 54 84 176
1600 NA NA NA NA 13 29 52 82 170
1700 NA NA NA NA 13 28 50 79 164
1800 NA NA NA NA 13 27 49 77 159
1900 NA NA NA NA 12 26 47 74 155
2000 NA NA NA NA 12 25 46 72 151
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa
Notes:
1 Table entries are rounded to 3 significant digits.
2 NA means a flow of less than 10 ft3/h (0.283 m3/h).
3 Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.
TABLE 1215.2(8)
SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2.1(i)]1, 2
  GAS: NATURAL
INLET PRESSURE: LESS THAN 2 psi
PRESSURE DROP: 0.5 in. w.c.
SPECIFIC GRAVITY: 0.60
  TUBE SIZE (inch)
NOMINAL: K & L: 1/4 3/8 1/2 5/8 3/4 1 11/4 11/2 2
ACR: 3/8 1/2 5/8 3/4 7/8 11/8 13/8 — —
OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125
INSIDE:3 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 27 55 111 195 276 590 1060 1680 3490
20 18 38 77 134 190 406 730 1150 2400
30 15 30 61 107 152 326 586 925 1930
40 13 26 53 92 131 279 502 791 1650
50 11 23 47 82 116 247 445 701 1460
60 10 21 42 74 105 224 403 635 1320
70 NA 19 39 68 96 206 371 585 1220
80 NA 18 36 63 90 192 345 544 1130
90 NA 17 34 59 84 180 324 510 1060
100 NA 16 32 56 79 170 306 482 1000
125 NA 14 28 50 70 151 271 427 890
150 NA 13 26 45 64 136 245 387 806
175 NA 12 24 41 59 125 226 356 742
200 NA 11 22 39 55 117 210 331 690
250 NA NA 20 34 48 103 186 294 612
300 NA NA 18 31 44 94 169 266 554
350 NA NA 16 28 40 86 155 245 510
400 NA NA 15 26 38 80 144 228 474
450 NA NA 14 25 35 75 135 214 445
500 NA NA 13 23 33 71 128 202 420
550 NA NA 13 22 32 68 122 192 399
600 NA NA 12 21 30 64 116 183 381
650 NA NA 12 20 29 62 111 175 365
700 NA NA 11 20 28 59 107 168 350
750 NA NA 11 19 27 57 103 162 338
800 NA NA 10 18 26 55 99 156 326
850 NA NA 10 18 25 53 96 151 315
900 NA NA NA 17 24 52 93 147 306
950 NA NA NA 17 24 50 90 143 297
1000 NA NA NA 16 23 49 88 139 289
1100 NA NA NA 15 22 46 84 132 274
1200 NA NA NA 15 21 44 80 126 262
1300 NA NA NA 14 20 42 76 120 251
1400 NA NA NA 13 19 41 73 116 241
1500 NA NA NA 13 18 39 71 111 232
1600 NA NA NA 13 18 38 68 108 224
1700 NA NA NA 12 17 37 66 104 217
1800 NA NA NA 12 17 36 64 101 210
1900 NA NA NA 11 16 35 62 98 204
2000 NA NA NA 11 16 34 60 95 199
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa
Notes:
1 Table entries are rounded to 3 significant digits.
2 NA means a flow of less than 10 ft3/h (0.283 m3/h).
3 Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.
TABLE 1215.2(9)
SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2.1(j)]1, 2
  GAS: NATURAL
INLET PRESSURE: LESS THAN 2 psi
PRESSURE DROP: 1.0 in. w.c.
SPECIFIC GRAVITY: 0.60
INTENDED USE: TUBE SIZING BETWEEN HOUSE LINE REGULATOR AND THE APPLIANCE
  TUBE SIZE (inch)
NOMINAL: K & L: 1/4 3/8 1/2 5/8 3/4 1 11/4 11/2 2
ACR: 3/8 1/2 5/8 3/4 7/8 11/8 13/8 — —
OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125
INSIDE:3 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 39 80 162 283 402 859 1550 2440 5080
20 27 55 111 195 276 590 1060 1680 3490
30 21 44 89 156 222 474 853 1350 2800
40 18 38 77 134 190 406 730 1150 2400
50 16 33 68 119 168 359 647 1020 2130
60 15 30 61 107 152 326 586 925 1930
70 13 28 57 99 140 300 539 851 1770
80 13 26 53 92 131 279 502 791 1650
90 12 24 49 86 122 262 471 742 1550
100 11 23 47 82 116 247 445 701 1460
125 NA 20 41 72 103 219 394 622 1290
150 NA 18 37 65 93 198 357 563 1170
175 NA 17 34 60 85 183 329 518 1080
200 NA 16 32 56 79 170 306 482 1000
250 NA 14 28 50 70 151 271 427 890
300 NA 13 26 45 64 136 245 387 806
350 NA 12 24 41 59 125 226 356 742
400 NA 11 22 39 55 117 210 331 690
450 NA 10 21 36 51 110 197 311 647
500 NA NA 20 34 48 103 186 294 612
550 NA NA 19 32 46 98 177 279 581
600 NA NA 18 31 44 94 169 266 554
650 NA NA 17 30 42 90 162 255 531
700 NA NA 16 28 40 86 155 245 510
750 NA NA 16 27 39 83 150 236 491
800 NA NA 15 26 38 80 144 228 474
850 NA NA 15 26 36 78 140 220 459
900 NA NA 14 25 35 75 135 214 445
950 NA NA 14 24 34 73 132 207 432
1000 NA NA 13 23 33 71 128 202 420
1100 NA NA 13 22 32 68 122 192 399
1200 NA NA 12 21 30 64 116 183 381
1300 NA NA 12 20 29 62 111 175 365
1400 NA NA 11 20 28 59 107 168 350
1500 NA NA 11 19 27 57 103 162 338
1600 NA NA 10 18 26 55 99 156 326
1700 NA NA 10 18 25 53 96 151 315
1800 NA NA NA 17 24 52 93 147 306
1900 NA NA NA 17 24 50 90 143 297
2000 NA NA NA 16 23 49 88 139 289
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa
Notes:
1 Table entries are rounded to 3 significant digits.
2 NA means a flow of less than 10 ft3/h (0.283 m3/h).
3 Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.
TABLE 1215.2(10)
SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2.1(k)]2
  GAS: NATURAL
INLET PRESSURE: LESS THAN 2 psi
PRESSURE DROP: 17.0 in. w.c.
SPECIFIC GRAVITY: 0.60
  TUBE SIZE (inch)
NOMINAL: K & L: 1/4 3/8 1/2 5/8 3/4 1 11/4 11/2 2
ACR: 3/8 1/2 5/8 3/4 7/8 11/8 13/8 — —
OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125
INSIDE:1 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 190 391 796 1390 1970 4220 7590 12 000 24 900
20 130 269 547 956 1360 2900 5220 8230 17 100
30 105 216 439 768 1090 2330 4190 6610 13 800
40 90 185 376 657 932 1990 3590 5650 11 800
50 79 164 333 582 826 1770 3180 5010 10 400
60 72 148 302 528 749 1600 2880 4540 9460
70 66 137 278 486 689 1470 2650 4180 8700
80 62 127 258 452 641 1370 2460 3890 8090
90 58 119 243 424 601 1280 2310 3650 7590
100 55 113 229 400 568 1210 2180 3440 7170
125 48 100 203 355 503 1080 1940 3050 6360
150 44 90 184 321 456 974 1750 2770 5760
175 40 83 169 296 420 896 1610 2540 5300
200 38 77 157 275 390 834 1500 2370 4930
250 33 69 140 244 346 739 1330 2100 4370
300 30 62 126 221 313 670 1210 1900 3960
350 28 57 116 203 288 616 1110 1750 3640
400 26 53 108 189 268 573 1030 1630 3390
450 24 50 102 177 252 538 968 1530 3180
500 23 47 96 168 238 508 914 1440 3000
550 22 45 91 159 226 482 868 1370 2850
600 21 43 87 152 215 460 829 1310 2720
650 20 41 83 145 206 441 793 1250 2610
700 19 39 80 140 198 423 762 1200 2500
750 18 38 77 135 191 408 734 1160 2410
800 18 37 74 130 184 394 709 1120 2330
850 17 35 72 126 178 381 686 1080 2250
900 17 34 70 122 173 370 665 1050 2180
950 16 33 68 118 168 359 646 1020 2120
1000 16 32 66 115 163 349 628 991 2060
1100 15 31 63 109 155 332 597 941 1960
1200 14 29 60 104 148 316 569 898 1870
1300 14 28 57 100 142 303 545 860 1790
1400 13 27 55 96 136 291 524 826 1720
1500 13 26 53 93 131 280 505 796 1660
1600 12 25 51 89 127 271 487 768 1600
1700 12 24 49 86 123 262 472 744 1550
1800 11 24 48 84 119 254 457 721 1500
1900 11 23 47 81 115 247 444 700 1460
2000 11 22 45 79 112 240 432 681 1420
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa
Notes:
1 Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.
2 Table entries are rounded to 3 significant digits.
TABLE 1215.2(11)
SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2.1(l)]2
  GAS: NATURAL
INLET PRESSURE: 2.0 psi
PRESSURE DROP: 1.0 psi
SPECIFIC GRAVITY: 0.60
  TUBE SIZE (inch)
NOMINAL: K & L: 1/4 3/8 1/2 5/8 3/4 1 11/4 11/2 2
ACR: 3/8 1/2 5/8 3/4 7/8 11/8 13/8 — —
OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125
INSIDE:1 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 245 506 1030 1800 2550 5450 9820 15 500 32 200
20 169 348 708 1240 1760 3750 6750 10 600 22 200
30 135 279 568 993 1410 3010 5420 8550 17 800
40 116 239 486 850 1210 2580 4640 7310 15 200
50 103 212 431 754 1070 2280 4110 6480 13 500
60 93 192 391 683 969 2070 3730 5870 12 200
70 86 177 359 628 891 1900 3430 5400 11 300
80 80 164 334 584 829 1770 3190 5030 10 500
90 75 154 314 548 778 1660 2990 4720 9820
100 71 146 296 518 735 1570 2830 4450 9280
125 63 129 263 459 651 1390 2500 3950 8220
150 57 117 238 416 590 1260 2270 3580 7450
175 52 108 219 383 543 1160 2090 3290 6850
200 49 100 204 356 505 1080 1940 3060 6380
250 43 89 181 315 448 956 1720 2710 5650
300 39 80 164 286 406 866 1560 2460 5120
350 36 74 150 263 373 797 1430 2260 4710
400 33 69 140 245 347 741 1330 2100 4380
450 31 65 131 230 326 696 1250 1970 4110
500 30 61 124 217 308 657 1180 1870 3880
550 28 58 118 206 292 624 1120 1770 3690
600 27 55 112 196 279 595 1070 1690 3520
650 26 53 108 188 267 570 1030 1620 3370
700 25 51 103 181 256 548 986 1550 3240
750 24 49 100 174 247 528 950 1500 3120
800 23 47 96 168 239 510 917 1450 3010
850 22 46 93 163 231 493 888 1400 2920
900 22 44 90 158 224 478 861 1360 2830
950 21 43 88 153 217 464 836 1320 2740
1000 20 42 85 149 211 452 813 1280 2670
1100 19 40 81 142 201 429 772 1220 2540
1200 18 38 77 135 192 409 737 1160 2420
1300 18 36 74 129 183 392 705 1110 2320
1400 17 35 71 124 176 376 678 1070 2230
1500 16 34 68 120 170 363 653 1030 2140
1600 16 33 66 116 164 350 630 994 2070
1700 15 31 64 112 159 339 610 962 2000
1800 15 30 62 108 154 329 592 933 1940
1900 14 30 60 105 149 319 575 906 1890
2000 14 29 59 102 145 310 559 881 1830
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa
Notes:
1 Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.
2 Table entries are rounded to 3 significant digits.
TABLE 1215.2(12)
SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2.1(m)]3
  GAS: NATURAL
INLET PRESSURE: 2.0 psi
PRESSURE DROP: 1.5 psi
SPECIFIC GRAVITY: 0.60
INTENDED USE: PIPE SIZING BEWEEN POINT OF DELIVERY AND THE HOUSE LINE REGULATOR. TOTAL LOAD SUPPLIED BY A SINGLE HOUSE LINE REGULATOR NOT EXCEEDING 150 CUBIC FEET PER HOUR.2
  TUBE SIZE (inch)
NOMINAL: K & L: 1/4 3/8 1/2 5/8 3/4 1 11/4 11/2 2
ACR: 3/8 1/2 5/8 3/4 7/8 11/8 13/8 — —
OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125
INSIDE:1 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 303 625 1270 2220 3150 6740 12 100 19 100 39 800
20 208 430 874 1530 2170 4630 8330 13 100 27 400
30 167 345 702 1230 1740 3720 6690 10 600 22 000
40 143 295 601 1050 1490 3180 5730 9030 18 800
50 127 262 532 931 1320 2820 5080 8000 16 700
60 115 237 482 843 1200 2560 4600 7250 15 100
70 106 218 444 776 1100 2350 4230 6670 13 900
80 98 203 413 722 1020 2190 3940 6210 12 900
90 92 190 387 677 961 2050 3690 5820 12 100
100 87 180 366 640 907 1940 3490 5500 11 500
125 77 159 324 567 804 1720 3090 4880 10 200
150 70 144 294 514 729 1560 2800 4420 9200
175 64 133 270 472 670 1430 2580 4060 8460
200 60 124 252 440 624 1330 2400 3780 7870
250 53 110 223 390 553 1180 2130 3350 6980
300 48 99 202 353 501 1070 1930 3040 6320
350 44 91 186 325 461 984 1770 2790 5820
400 41 85 173 302 429 916 1650 2600 5410
450 39 80 162 283 402 859 1550 2440 5080
500 36 75 153 268 380 811 1460 2300 4800
550 35 72 146 254 361 771 1390 2190 4560
600 33 68 139 243 344 735 1320 2090 4350
650 32 65 133 232 330 704 1270 2000 4160
700 30 63 128 223 317 676 1220 1920 4000
750 29 60 123 215 305 652 1170 1850 3850
800 28 58 119 208 295 629 1130 1790 3720
850 27 57 115 201 285 609 1100 1730 3600
900 27 55 111 195 276 590 1060 1680 3490
950 26 53 108 189 268 573 1030 1630 3390
1000 25 52 105 184 261 558 1000 1580 3300
1100 24 49 100 175 248 530 954 1500 3130
1200 23 47 95 167 237 505 910 1430 2990
1300 22 45 91 160 227 484 871 1370 2860
1400 21 43 88 153 218 465 837 1320 2750
1500 20 42 85 148 210 448 806 1270 2650
1600 19 40 82 143 202 432 779 1230 2560
1700 19 39 79 138 196 419 753 1190 2470
1800 18 38 77 134 190 406 731 1150 2400
1900 18 37 74 130 184 394 709 1120 2330
2000 17 36 72 126 179 383 690 1090 2270
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa
Notes:
1 Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.
2 Where this table is used to size the tubing upstream of a line pressure regulator, the pipe or tubing downstream of the line pressure regulator shall be sized using a pressure drop no greater than 1 inch water column (0.249 kPa).
3 Table entries are rounded to 3 significant digits.
TABLE 1215.2(13)
SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2.1(n)]2
  GAS: NATURAL
INLET PRESSURE: 5.0 psi
PRESSURE DROP: 3.5 psi
SPECIFIC GRAVITY: 0.60
  TUBE SIZE (inch)
NOMINAL: K & L: 1/4 3/8 1/2 5/8 3/4 1 11/4 11/2 2
ACR: 3/8 1/2 5/8 3/4 7/8 11/8 13/8 — —
OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125
INSIDE:1 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 511 1050 2140 3750 5320 11 400 20 400 32 200 67 100
20 351 724 1470 2580 3650 7800 14 000 22 200 46 100
30 282 582 1180 2070 2930 6270 11 300 17 800 37 000
40 241 498 1010 1770 2510 5360 9660 15 200 31 700
50 214 441 898 1570 2230 4750 8560 13 500 28 100
60 194 400 813 1420 2020 4310 7750 12 200 25 500
70 178 368 748 1310 1860 3960 7130 11 200 23 400
80 166 342 696 1220 1730 3690 6640 10 500 21 800
90 156 321 653 1140 1620 3460 6230 9820 20 400
100 147 303 617 1080 1530 3270 5880 9270 19 300
125 130 269 547 955 1360 2900 5210 8220 17 100
150 118 243 495 866 1230 2620 4720 7450 15 500
175 109 224 456 796 1130 2410 4350 6850 14 300
200 101 208 424 741 1050 2250 4040 6370 13 300
250 90 185 376 657 932 1990 3580 5650 11 800
300 81 167 340 595 844 1800 3250 5120 10 700
350 75 154 313 547 777 1660 2990 4710 9810
400 69 143 291 509 722 1540 2780 4380 9120
450 65 134 273 478 678 1450 2610 4110 8560
500 62 127 258 451 640 1370 2460 3880 8090
550 58 121 245 429 608 1300 2340 3690 7680
600 56 115 234 409 580 1240 2230 3520 7330
650 53 110 224 392 556 1190 2140 3370 7020
700 51 106 215 376 534 1140 2050 3240 6740
750 49 102 207 362 514 1100 1980 3120 6490
800 48 98 200 350 497 1060 1910 3010 6270
850 46 95 194 339 481 1030 1850 2910 6070
900 45 92 188 328 466 1000 1790 2820 5880
950 43 90 182 319 452 967 1740 2740 5710
1000 42 87 177 310 440 940 1690 2670 5560
1100 40 83 169 295 418 893 1610 2530 5280
1200 38 79 161 281 399 852 1530 2420 5040
1300 37 76 154 269 382 816 1470 2320 4820
1400 35 73 148 259 367 784 1410 2220 4630
1500 34 70 143 249 353 755 1360 2140 4460
1600 33 68 138 241 341 729 1310 2070 4310
1700 32 65 133 233 330 705 1270 2000 4170
1800 31 63 129 226 320 684 1230 1940 4040
1900 30 62 125 219 311 664 1200 1890 3930
2000 29 60 122 213 302 646 1160 1830 3820
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa
Notes:
1 Table entries are rounded to 3 significant digits.
2 Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, fittings, or both shall be increased by an equivalent length of tubing to the following equation: L = 1.3 n, where L is additional length (ft) of tubing and n is the number of additional fittings, bends, or both.
3 EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, the greater the gas capacity of the tubing.
TABLE 1215.2(14)
CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.2.1(o)]1, 2
  GAS: NATURAL
INLET PRESSURE: LESS THAN 2 psi
PRESSURE DROP: 0.5 in. w.c.
SPECIFIC GRAVITY: 0.60
  TUBE SIZE (EHD)3
FLOW DESIGNATION: 13 15 18 19 23 25 30 31 37 39 46 48 60 62
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
5 46 63 115 134 225 270 471 546 895 1037 1790 2070 3660 4140
10 32 44 82 95 161 192 330 383 639 746 1260 1470 2600 2930
15 25 35 66 77 132 157 267 310 524 615 1030 1200 2140 2400
20 22 31 58 67 116 137 231 269 456 536 888 1050 1850 2080
25 19 27 52 60 104 122 206 240 409 482 793 936 1660 1860
30 18 25 47 55 96 112 188 218 374 442 723 856 1520 1700
40 15 21 41 47 83 97 162 188 325 386 625 742 1320 1470
50 13 19 37 42 75 87 144 168 292 347 559 665 1180 1320
60 12 17 34 38 68 80 131 153 267 318 509 608 1080 1200
70 11 16 31 36 63 74 121 141 248 295 471 563 1000 1110
80 10 15 29 33 60 69 113 132 232 277 440 527 940 1040
90 10 14 28 32 57 65 107 125 219 262 415 498 887 983
100 9 13 26 30 54 62 101 118 208 249 393 472 843 933
150 7 10 20 23 42 48 78 91 171 205 320 387 691 762
200 6 9 18 21 38 44 71 82 148 179 277 336 600 661
250 5 8 16 19 34 39 63 74 133 161 247 301 538 591
300 5 7 15 17 32 36 57 67 95 148 226 275 492 540
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa
Notes:
1 Table entries are rounded to 3 significant digits.
2 Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, fittings, or both shall be increased by an equivalent length of tubing to the following equation: L = 1.3 n, where L is additional length (ft) of tubing and n is the number of additional fittings, bends, or both.
3 EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, the greater the gas capacity of the tubing.
TABLE 1215.2(15)
CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.2.1(p)]1, 2
  GAS: NATURAL
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 WATER COLUMN OR GREATER
  TUBE SIZE (EHD)3
FLOW DESIGNATION: 13 15 18 19 23 25 30 31 37 39 46 48 60 62
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
5 120 160 277 327 529 649 1180 1370 2140 2423 4430 5010 8800 10 100
10 83 112 197 231 380 462 828 958 1530 1740 3200 3560 6270 7160
15 67 90 161 189 313 379 673 778 1250 1433 2540 2910 5140 5850
20 57 78 140 164 273 329 580 672 1090 1249 2200 2530 4460 5070
25 51 69 125 147 245 295 518 599 978 1123 1960 2270 4000 4540
30 46 63 115 134 225 270 471 546 895 1029 1790 2070 3660 4140
40 39 54 100 116 196 234 407 471 778 897 1550 1800 3180 3590
50 35 48 89 104 176 210 363 421 698 806 1380 1610 2850 3210
60 32 44 82 95 161 192 330 383 639 739 1260 1470 2600 2930
70 29 41 76 88 150 178 306 355 593 686 1170 1360 2420 2720
80 27 38 71 82 141 167 285 331 555 644 1090 1280 2260 2540
90 26 36 67 77 133 157 268 311 524 609 1030 1200 2140 2400
100 24 34 63 73 126 149 254 295 498 579 974 1140 2030 2280
150 19 27 52 60 104 122 206 240 409 477 793 936 1660 1860
200 17 23 45 52 91 106 178 207 355 415 686 812 1440 1610
250 15 21 40 46 82 95 159 184 319 373 613 728 1290 1440
300 13 19 37 42 75 87 144 168 234 342 559 665 1180 1320
For SI units: 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa
Notes:
1 Table entries are rounded to 3 significant digits.
TABLE 1215.2(16)
CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.2.1(q)]1, 2
  GAS: NATURAL
INLET PRESSURE: LESS THAN 2 psi
PRESSURE DROP: 6.0 in. w.c.
SPECIFIC GRAVITY: 0.60
INTENDED USE: INITIAL SUPPLY PRESSURE OF 11.0 INCH WATER COLUMN OR GREATER
  TUBE SIZE (EHD)3
FLOW DESIGNATION: 13 15 18 19 23 25 30 31 37 39 46 48 60 62
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
5 173 229 389 461 737 911 1690 1950 3000 3375 6280 7050 12 400 14 260
10 120 160 277 327 529 649 1180 1370 2140 2423 4430 5010 8800 10 100
15 96 130 227 267 436 532 960 1110 1760 1996 3610 4100 7210 8260
20 83 112 197 231 380 462 828 958 1530 1740 3120 3560 6270 7160
25 74 99 176 207 342 414 739 855 1370 1564 2790 3190 5620 6400
30 67 90 161 189 313 379 673 778 1250 1433 2540 2910 5140 5850
40 57 78 140 164 273 329 580 672 1090 1249 2200 2530 4460 5070
50 51 69 125 147 245 295 518 599 978 1123 1960 2270 4000 4540
60 46 63 115 134 225 270 471 546 895 1029 1790 2070 3660 4140
70 42 58 106 124 209 250 435 505 830 956 1660 1920 3390 3840
80 39 54 100 116 196 234 407 471 778 897 1550 1800 3180 3590
90 37 51 94 109 185 221 383 444 735 848 1460 1700 3000 3390
100 35 48 89 104 176 210 363 421 698 806 1380 1610 2850 3210
150 28 39 73 85 145 172 294 342 573 664 1130 1320 2340 2630
200 24 34 63 73 126 149 254 295 498 579 974 1140 2030 2280
250 21 30 57 66 114 134 226 263 447 520 870 1020 1820 2040
300 19 27 52 60 104 122 206 240 409 477 793 936 1660 1860
For SI units: 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa
Notes:
1 Table entries are rounded to 3 significant digits.
2 Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, fittings, or both shall be increased by an equivalent length of tubing to the following equation: L = 1.3 n, where L is additional length (ft) of tubing and n is the number of additional fittings, bends, or both.
3 EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, the greater the gas capacity of the tubing.
TABLE 1215.2(17)
CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.2.1(r)]1, 2, 3, 4
  GAS: NATURAL
INLET PRESSURE: 2.0 psi
PRESSURE DROP: 1.0 psi
SPECIFIC GRAVITY: 0.60
  TUBE SIZE (EHD)5
FLOW DESIGNATION: 13 15 18 19 23 25 30 31 37 39 46 48 60 62
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 270 353 587 700 1100 1370 2590 2990 4510 5037 9600 10 700 18 600 21 600
25 166 220 374 444 709 876 1620 1870 2890 3258 6040 6780 11 900 13 700
30 151 200 342 405 650 801 1480 1700 2640 2987 5510 6200 10 900 12 500
40 129 172 297 351 567 696 1270 1470 2300 2605 4760 5380 9440 10 900
50 115 154 266 314 510 624 1140 1310 2060 2343 4260 4820 8470 9720
75 93 124 218 257 420 512 922 1070 1690 1932 3470 3950 6940 7940
80 89 120 211 249 407 496 892 1030 1640 1874 3360 3820 6730 7690
100 79 107 189 222 366 445 795 920 1470 1685 3000 3420 6030 6880
150 64 87 155 182 302 364 646 748 1210 1389 2440 2800 4940 5620
200 55 75 135 157 263 317 557 645 1050 1212 2110 2430 4290 4870
250 49 67 121 141 236 284 497 576 941 1090 1890 2180 3850 4360
300 44 61 110 129 217 260 453 525 862 999 1720 1990 3520 3980
400 38 52 96 111 189 225 390 453 749 871 1490 1730 3060 3450
500 34 46 86 100 170 202 348 404 552 783 1330 1550 2740 3090
For SI units: 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa
Notes:
1 Table does not include effect of pressure drop across the line regulator. Where regulator loss exceeds 0.75 psi (5.17 kPa), DO NOT USE THIS TABLE. Consult with regulator manufacturer for pressure drops and capacity factors. Pressure drops across a regulator are capable of varying with flow rate.
2 CAUTION: Capacities shown in table are capable of exceeding maximum capacity for a selected regulator. Consult with regulator or tubing manufacturer for guidance.
3 Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, fittings, or both shall be increased by an equivalent length of tubing according to the following equation: L = 1.3 n, where L is additional length (ft) of tubing and n is the number of additional fittings, bends, or both.
4 Table entries are rounded to 3 significant digits.
5 EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, the greater the gas capacity of the tubing.
TABLE 1215.2(18)
CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.2.1(s)]1, 2, 3, 4
  GAS: NATURAL
INLET PRESSURE: 5.0 psi
PRESSURE DROP: 3.5 psi
SPECIFIC GRAVITY: 0.60
  TUBE SIZE (EHD)5
FLOW DESIGNATION: 13 15 18 19 23 25 30 31 37 39 46 48 60 62
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 523 674 1080 1300 2000 2530 4920 5660 8300 9140 18 100 19 800 34 400 40 400
25 322 420 691 827 1290 1620 3080 3540 5310 5911 11 400 12 600 22 000 25 600
30 292 382 632 755 1180 1480 2800 3230 4860 5420 10 400 11 500 20 100 23 400
40 251 329 549 654 1030 1280 2420 2790 4230 4727 8970 10 000 17 400 20 200
50 223 293 492 586 926 1150 2160 2490 3790 4251 8020 8930 15 600 18 100
75 180 238 403 479 763 944 1750 2020 3110 3506 6530 7320 12 800 14 800
80 174 230 391 463 740 915 1690 1960 3020 3400 6320 7090 12 400 14 300
100 154 205 350 415 665 820 1510 1740 2710 3057 5650 6350 11 100 12 800
150 124 166 287 339 548 672 1230 1420 2220 2521 4600 5200 9130 10 500
200 107 143 249 294 478 584 1060 1220 1930 2199 3980 4510 7930 9090
250 95 128 223 263 430 524 945 1090 1730 1977 3550 4040 7110 8140
300 86 116 204 240 394 479 860 995 1590 1813 3240 3690 6500 7430
400 74 100 177 208 343 416 742 858 1380 1581 2800 3210 5650 6440
500 66 89 159 186 309 373 662 766 1040 1422 2500 2870 5060 5760
For SI units: 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa
Notes:
1 Table does not include effect of pressure drop across the line regulator. Where regulator loss exceeds 1 psi (7 kPa), DO NOT USE THIS TABLE. Consult with regulator manufacturer for pressure drops and capacity factors. Pressure drops across regulator are capable of varying with the flow rate.
2 CAUTION: Capacities shown in table are capable of exceeding the maximum capacity of selected regulator. Consult tubing manufacturer for guidance.
3 Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, fittings, or both shall be increased by an equivalent length of tubing to the following equation: L= 1.3 n, where L is additional length (feet) of tubing and n is the number of additional fittings, bends, or both.
4 Table entries are rounded to 3 significant digits.
5 EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, the greater the gas capacity of the tubing.
TABLE 1215.2(19)
POLYETHYLENE PLASTIC PIPE [NFPA 54: TABLE 6.2.1(t)]*
  GAS: NATURAL
INLET PRESSURE: LESS THAN 2 psi
PRESSURE DROP: 0.3 in w.c.
SPECIFIC GRAVITY: 0.60
  PIPE SIZE (inch)
NOMINAL OD: 1/2 3/4 1 11/4 11/2 2 3 4
DESIGNATION: SDR 9.3 SDR 11 SDR 11 SDR 10 SDR 11 SDR 11 SDR 11 SDR 11
ACTUAL ID: 0.660 0.860 1.077 1.328 1.554 1.943 2.864 3.682
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 153 305 551 955 1440 2590 7170 13 900
20 105 210 379 656 991 1780 4920 9520
30 84 169 304 527 796 1430 3950 7640
40 72 144 260 451 681 1220 3380 6540
50 64 128 231 400 604 1080 3000 5800
60 58 116 209 362 547 983 2720 5250
70 53 107 192 333 503 904 2500 4830
80 50 99 179 310 468 841 2330 4500
90 46 93 168 291 439 789 2180 4220
100 44 88 159 275 415 745 2060 3990
125 39 78 141 243 368 661 1830 3530
150 35 71 127 221 333 598 1660 3200
175 32 65 117 203 306 551 1520 2940
200 30 60 109 189 285 512 1420 2740
250 27 54 97 167 253 454 1260 2430
300 24 48 88 152 229 411 1140 2200
350 22 45 81 139 211 378 1050 2020
400 21 42 75 130 196 352 974 1880
450 19 39 70 122 184 330 914 1770
500 18 37 66 115 174 312 863 1670
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa * Table entries are rounded to 3 significant digits.
TABLE 1215.2(20)
POLYETHYLENE PLASTIC PIPE [NFPA 54: TABLE 6.2.1(u)]*
  GAS: NATURAL
INLET PRESSURE: LESS THAN 2 psi
PRESSURE DROP: 0.5 in w.c.
SPECIFIC GRAVITY: 0.60
  PIPE SIZE (inch)
NOMINAL OD: 1/2 3/4 1 11/4 11/2 2 3 4
DESIGNATION: SDR 9.3 SDR 11 SDR 11 SDR 10 SDR 11 SDR 11 SDR 11 SDR 11
ACTUAL ID: 0.660 0.860 1.077 1.328 1.554 1.943 2.864 3.682
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 201 403 726 1260 1900 3410 9450 18 260
20 138 277 499 865 1310 2350 6490 12 550
30 111 222 401 695 1050 1880 5210 10 080
40 95 190 343 594 898 1610 4460 8630
50 84 169 304 527 796 1430 3950 7640
60 76 153 276 477 721 1300 3580 6930
70 70 140 254 439 663 1190 3300 6370
80 65 131 236 409 617 1110 3070 5930
90 61 123 221 383 579 1040 2880 5560
100 58 116 209 362 547 983 2720 5250
125 51 103 185 321 485 871 2410 4660
150 46 93 168 291 439 789 2180 4220
175 43 86 154 268 404 726 2010 3880
200 40 80 144 249 376 675 1870 3610
250 35 71 127 221 333 598 1660 3200
300 32 64 115 200 302 542 1500 2900
350 29 59 106 184 278 499 1380 2670
400 27 55 99 171 258 464 1280 2480
450 26 51 93 160 242 435 1200 2330
500 24 48 88 152 229 411 1140 2200
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa
* Table entries are rounded to 3 significant digits.
TABLE 1215.2(21)
POLYETHYLENE PLASTIC PIPE [NFPA 54: TABLE 6.2.1(v)]*
  GAS: NATURAL
INLET PRESSURE: 2.0 psi
PRESSURE DROP: 1.0 psi
SPECIFIC GRAVITY: 0.60
  PIPE SIZE (inch)
NOMINAL OD: 1/2 3/4 1 11/4 11/2 2 3 4
DESIGNATION: SDR 9.3 SDR 11 SDR 11 SDR 10 SDR 11 SDR 11 SDR 11 SDR 11
ACTUAL ID: 0.660 0.860 1.077 1.328 1.554 1.943 2.864 3.682
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 1860 3720 6710 11 600 17 600 31 600 87 300 169 000
20 1280 2560 4610 7990 12 100 21 700 60 000 116 000
30 1030 2050 3710 6420 9690 17 400 48 200 93 200
40 878 1760 3170 5490 8300 14 900 41 200 79 700
50 778 1560 2810 4870 7350 13 200 36 600 70 700
60 705 1410 2550 4410 6660 12 000 33 100 64 000
70 649 1300 2340 4060 6130 11 000 30 500 58 900
80 603 1210 2180 3780 5700 10 200 28 300 54 800
90 566 1130 2050 3540 5350 9610 26 600 51 400
100 535 1070 1930 3350 5050 9080 25 100 48 600
125 474 949 1710 2970 4480 8050 22 300 43 000
150 429 860 1550 2690 4060 7290 20 200 39 000
175 395 791 1430 2470 3730 6710 18 600 35 900
200 368 736 1330 2300 3470 6240 17 300 33 400
250 326 652 1180 2040 3080 5530 15 300 29 600
300 295 591 1070 1850 2790 5010 13 900 26 800
350 272 544 981 1700 2570 4610 12 800 24 700
400 253 506 913 1580 2390 4290 11 900 22 900
450 237 475 856 1480 2240 4020 11 100 21 500
500 224 448 809 1400 2120 3800 10 500 20 300
550 213 426 768 1330 2010 3610 9990 19 300
600 203 406 733 1270 1920 3440 9530 18 400
650 194 389 702 1220 1840 3300 9130 17 600
700 187 374 674 1170 1760 3170 8770 16 900
750 180 360 649 1130 1700 3050 8450 16 300
800 174 348 627 1090 1640 2950 8160 15 800
850 168 336 607 1050 1590 2850 7890 15 300
900 163 326 588 1020 1540 2770 7650 14 800
950 158 317 572 990 1500 2690 7430 14 400
1000 154 308 556 963 1450 2610 7230 14 000
1100 146 293 528 915 1380 2480 6870 13 300
1200 139 279 504 873 1320 2370 6550 12 700
1300 134 267 482 836 1260 2270 6270 12 100
1400 128 257 463 803 1210 2180 6030 11 600
1500 124 247 446 773 1170 2100 5810 11 200
1600 119 239 431 747 1130 2030 5610 10 800
1700 115 231 417 723 1090 1960 5430 10 500
1800 112 224 404 701 1060 1900 5260 10 200
1900 109 218 393 680 1030 1850 5110 9900
2000 106 212 382 662 1000 1800 4970 9600
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa
* Table entries are rounded to 3 significant digits.
TABLE 1215.2(22)
POLYETHYLENE PLASTIC TUBING [NFPA 54: TABLE 6.2.1(w)]2, 3
  GAS: NATURAL
INLET PRESSURE: LESS THAN 2.0 psi
PRESSURE DROP: 0.3 in. w.c.
SPECIFIC GRAVITY: 0.60
PLASTIC TUBING SIZE (CTS)1 (inch)
NOMINAL OD: 1/2 1
DESIGNATION: SDR 7 SDR 11
ACTUAL ID: 0.445 0.927
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 54 372
20 37 256
30 30 205
40 26 176
50 23 156
60 21 141
70 19 130
80 18 121
90 17 113
100 16 107
125 14 95
150 13 86
175 12 79
200 11 74
225 10 69
250 NA 65
275 NA 62
300 NA 59
350 NA 54
400 NA 51
450 NA 47
500 NA 45
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column =0.249 kPa
Notes:
1 CTS = Copper tube size.
2 Table entries are rounded to 3 significant digits.
3 NA means a flow of less than 10 ft3/h (0.283 m3/h).
TABLE 1215.2(23)
POLYETHYLENE PLASTIC TUBING [NFPA 54: TABLE 6.2.1(x)]2, 3
  GAS: NATURAL
INLET PRESSURE: LESS THAN 2.0 psi
PRESSURE DROP: 0.5 in. w.c.
SPECIFIC GRAVITY: 0.60
PLASTIC TUBING SIZE (CTS)1 (inch)
NOMINAL OD: 1/2 1
DESIGNATION: SDR 7 SDR 11
ACTUAL ID: 0.445 0.927
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 72 490
20 49 337
30 39 271
40 34 232
50 30 205
60 27 186
70 25 171
80 23 159
90 22 149
100 21 141
125 18 125
150 17 113
175 15 104
200 14 97
225 13 91
250 12 86
275 11 82
300 11 78
350 10 72
400 NA 67
450 NA 63
500 NA 59
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column =0.249 kPa
Notes:
1 CTS = Copper tube size.
2 Table entries are rounded to 3 significant digits.
3 NA means a flow of less than 10 ft3/h (0.283 m3/h).
TABLE 1215.2(24)
SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.3.1(a)]*
  GAS: UNDILUTED PROPANE
INLET PRESSURE: 10.0 psi
PRESSURE DROP: 1.0 psi
SPECIFIC GRAVITY: 1.50
INTENDED USE: PIPE SIZING BETWEEN FIRST STAGE (HIGH PRESSURE) REGULATOR AND SECOND STAGE (LOW PRESSURE) REGULATOR
  PIPE SIZE (inch)
NOMINAL INSIDE: 1/2 3/4 1 11/4 11/2 2 21/2 3 4
ACTUAL: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026
LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR
10 3320 6950 13 100 26 900 40 300 77 600 124 000 219 000 446 000
20 2280 4780 9000 18 500 27 700 53 300 85 000 150 000 306 000
30 1830 3840 7220 14 800 22 200 42 800 68 200 121 000 246 000
40 1570 3280 6180 12 700 19 000 36 600 58 400 103 000 211 000
50 1390 2910 5480 11 300 16 900 32 500 51 700 91 500 187 000
60 1260 2640 4970 10 200 15 300 29 400 46 900 82 900 169 000
70 1160 2430 4570 9380 14 100 27 100 43 100 76 300 156 000
80 1080 2260 4250 8730 13 100 25 200 40 100 70 900 145 000
90 1010 2120 3990 8190 12 300 23 600 37 700 66 600 136 000
100 956 2000 3770 7730 11 600 22 300 35 600 62 900 128 000
125 848 1770 3340 6850 10 300 19 800 31 500 55 700 114 000
150 768 1610 3020 6210 9300 17 900 28 600 50 500 103 000
175 706 1480 2780 5710 8560 16 500 26 300 46 500 94 700
200 657 1370 2590 5320 7960 15 300 24 400 43 200 88 100
250 582 1220 2290 4710 7060 13 600 21 700 38 300 78 100
300 528 1100 2080 4270 6400 12 300 19 600 34 700 70 800
350 486 1020 1910 3930 5880 11 300 18 100 31 900 65 100
400 452 945 1780 3650 5470 10 500 16 800 29 700 60 600
450 424 886 1670 3430 5140 9890 15 800 27 900 56 800
500 400 837 1580 3240 4850 9340 14 900 26 300 53 700
550 380 795 1500 3070 4610 8870 14 100 25 000 51 000
600 363 759 1430 2930 4400 8460 13 500 23 900 48 600
650 347 726 1370 2810 4210 8110 12 900 22 800 46 600
700 334 698 1310 2700 4040 7790 12 400 21 900 44 800
750 321 672 1270 2600 3900 7500 12 000 21 100 43 100
800 310 649 1220 2510 3760 7240 11 500 20 400 41 600
850 300 628 1180 2430 3640 7010 11 200 19 800 40 300
900 291 609 1150 2360 3530 6800 10 800 19 200 39 100
950 283 592 1110 2290 3430 6600 10 500 18 600 37 900
1000 275 575 1080 2230 3330 6420 10 200 18 100 36 900
1100 261 546 1030 2110 3170 6100 9720 17 200 35 000
1200 249 521 982 2020 3020 5820 9270 16 400 33 400
1300 239 499 940 1930 2890 5570 8880 15 700 32 000
1400 229 480 903 1850 2780 5350 8530 15 100 30 800
1500 221 462 870 1790 2680 5160 8220 14 500 29 600
1600 213 446 840 1730 2590 4980 7940 14 000 28 600
1700 206 432 813 1670 2500 4820 7680 13 600 27 700
1800 200 419 789 1620 2430 4670 7450 13 200 26 900
1900 194 407 766 1570 2360 4540 7230 12 800 26 100
2000 189 395 745 1530 2290 4410 7030 12 400 25 400
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.8947 kPa
* Table entries are rounded to 3 significant digits.
TABLE 1215.2(25)
SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.3.1(b)]*
  GAS: UNDILUTED PROPANE
INLET PRESSURE: 10.0 psi
PRESSURE DROP: 3.0 psi
SPECIFIC GRAVITY: 1.50
INTENDED USE: PIPE SIZING BETWEEN FIRST STAGE (HIGH PRESSURE) REGULATOR AND SECOND STAGE (LOW PRESSURE) REGULATOR
  PIPE SIZE (inch)
NOMINAL INSIDE: 1/2 3/4 1 11/4 11/2 2 21/2 3 4
ACTUAL: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026
LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR
10 5890 12 300 23 200 47 600 71 300 137 000 219 000 387 000 789 000
20 4050 8460 15 900 32 700 49 000 94 400 150 000 266 000 543 000
30 3250 6790 12 800 26 300 39 400 75 800 121 000 214 000 436 000
40 2780 5810 11 000 22 500 33 700 64 900 103 000 183 000 373 000
50 2460 5150 9710 19 900 29 900 57 500 91 600 162 000 330 000
60 2230 4670 8790 18 100 27 100 52 100 83 000 147 000 299 000
70 2050 4300 8090 16 600 24 900 47 900 76 400 135 000 275 000
80 1910 4000 7530 15 500 23 200 44 600 71 100 126 000 256 000
90 1790 3750 7060 14 500 21 700 41 800 66 700 118 000 240 000
100 1690 3540 6670 13 700 20 500 39 500 63 000 111 000 227 000
125 1500 3140 5910 12 100 18 200 35 000 55 800 98 700 201 000
150 1360 2840 5360 11 000 16 500 31 700 50 600 89 400 182 000
175 1250 2620 4930 10 100 15 200 29 200 46 500 82 300 167 800
200 1160 2430 4580 9410 14 100 27 200 43 300 76 500 156 100
250 1030 2160 4060 8340 12 500 24 100 38 400 67 800 138 400
300 935 1950 3680 7560 11 300 21 800 34 800 61 500 125 400
350 860 1800 3390 6950 10 400 20 100 32 000 56 500 115 300
400 800 1670 3150 6470 9690 18 700 29 800 52 600 107 300
450 751 1570 2960 6070 9090 17 500 27 900 49 400 100 700
500 709 1480 2790 5730 8590 16 500 26 400 46 600 95 100
550 673 1410 2650 5450 8160 15 700 25 000 44 300 90 300
600 642 1340 2530 5200 7780 15 000 23 900 42 200 86 200
650 615 1290 2420 4980 7450 14 400 22 900 40 500 82 500
700 591 1240 2330 4780 7160 13 800 22 000 38 900 79 300
750 569 1190 2240 4600 6900 13 300 21 200 37 400 76 400
800 550 1150 2170 4450 6660 12 800 20 500 36 200 73 700
850 532 1110 2100 4300 6450 12 400 19 800 35 000 71 400
900 516 1080 2030 4170 6250 12 000 19 200 33 900 69 200
950 501 1050 1970 4050 6070 11 700 18 600 32 900 67 200
1000 487 1020 1920 3940 5900 11 400 18 100 32 000 65 400
1100 463 968 1820 3740 5610 10 800 17 200 30 400 62 100
1200 442 923 1740 3570 5350 10 300 16 400 29 000 59 200
1300 423 884 1670 3420 5120 9870 15 700 27 800 56 700
1400 406 849 1600 3280 4920 9480 15 100 26 700 54 500
1500 391 818 1540 3160 4740 9130 14 600 25 700 52 500
1600 378 790 1490 3060 4580 8820 14 100 24 800 50 700
1700 366 765 1440 2960 4430 8530 13 600 24 000 49 000
1800 355 741 1400 2870 4300 8270 13 200 23 300 47 600
1900 344 720 1360 2780 4170 8040 12 800 22 600 46 200
2000 335 700 1320 2710 4060 7820 12 500 22 000 44 900
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.8947 kPa
* Table entries are rounded to 3 significant digits.
TABLE 1215.2(26)
SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.3.1(c)]*
  GAS: UNDILUTED PROPANE
INLET PRESSURE: 2.0 psi
PRESSURE DROP: 1.0 psi
SPECIFIC GRAVITY: 1.50
INTENDED USE: PIPE SIZING BETWEEN 2 PSIG SERVICE AND LINE PRESSURE
  PIPE SIZE (inch)
NOMINAL: 1/2 3/4 1 11/4 11/2 2 21/2 3 4
ACTUAL ID: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026
LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR
10 2680 5590 10 500 21 600 32 400 62 400 99 500 176 000 359 000
20 1840 3850 7240 14 900 22 300 42 900 68 400 121 000 247 000
30 1480 3090 5820 11 900 17 900 34 500 54 900 97 100 198 000
40 1260 2640 4980 10 200 15 300 29 500 47 000 83 100 170 000
50 1120 2340 4410 9060 13 600 26 100 41 700 73 700 150 000
60 1010 2120 4000 8210 12 300 23 700 37 700 66 700 136 000
70 934 1950 3680 7550 11 300 21 800 34 700 61 400 125 000
80 869 1820 3420 7020 10 500 20 300 32 300 57 100 116 000
90 815 1700 3210 6590 9880 19 000 30 300 53 600 109 000
100 770 1610 3030 6230 9330 18 000 28 600 50 600 103 000
125 682 1430 2690 5520 8270 15 900 25 400 44 900 91 500
150 618 1290 2440 5000 7490 14 400 23 000 40 700 82 900
175 569 1190 2240 4600 6890 13 300 21 200 37 400 76 300
200 529 1110 2080 4280 6410