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TABLE 402.4(3)
SCHEDULE 40 METALLIC PIPE 		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 (ft) Capacity in Cubic Feet of Gas Per Hour
10 1,510 3,040 5,560 11,400 17,100 32,900 52,500 92,800 189,000
20 1,070 2,150 3,930 8,070 12,100 23,300 37,100 65,600 134,000
30 869 1,760 3,210 6,590 9,880 19,000 30,300 53,600 109,000
40 753 1,520 2,780 5,710 8,550 16,500 26,300 46,400 94,700
50 673 1,360 2,490 5,110 7,650 14,700 23,500 41,500 84,700
60 615 1,240 2,270 4,660 6,980 13,500 21,400 37,900 77,300
70 569 1,150 2,100 4,320 6,470 12,500 19,900 35,100 71,600
80 532 1,080 1,970 4,040 6,050 11,700 18,600 32,800 67,000
90 502 1,010 1,850 3,810 5,700 11,000 17,500 30,900 63,100
100 462 934 1,710 3,510 5,260 10,100 16,100 28,500 58,200
125 414 836 1,530 3,140 4,700 9,060 14,400 25,500 52,100
150 372 751 1,370 2,820 4,220 8,130 13,000 22,900 46,700
175 344 695 1,270 2,601 3,910 7,530 12,000 21,200 43,300
200 318 642 1,170 2,410 3,610 6,960 11,100 19,600 40,000
250 279 583 1,040 2,140 3,210 6,180 9,850 17,400 35,500
300 253 528 945 1,940 2,910 5,600 8,920 15,800 32,200
350 232 486 869 1,790 2,670 5,150 8,210 14,500 29,600
400 216 452 809 1,660 2,490 4,790 7,640 13,500 27,500
450 203 424 759 1,560 2,330 4,500 7,170 12,700 25,800
500 192 401 717 1,470 2,210 4,250 6,770 12,000 24,400
550 182 381 681 1,400 2,090 4,030 6,430 11,400 23,200
600 174 363 650 1,330 2,000 3,850 6,130 10,800 22,100
650 166 348 622 1,280 1,910 3,680 5,870 10,400 21,200
700 160 334 598 1,230 1,840 3,540 5,640 9,970 20,300
750 154 322 576 1,180 1,770 3,410 5,440 9,610 19,600
800 149 311 556 1,140 1,710 3,290 5,250 9,280 18,900
850 144 301 538 1,100 1,650 3,190 5,080 8,980 18,300
900 139 292 522 1,070 1,600 3,090 4,930 8,710 17,800
950 135 283 507 1,040 1,560 3,000 4,780 8,460 17,200
1,000 132 275 493 1,010 1,520 2,920 4,650 8,220 16,800
1,100 125 262 468 960 1,440 2,770 4,420 7,810 15,900
1,200 119 250 446 917 1,370 2,640 4,220 7,450 15,200
1,300 114 239 427 878 1,320 2,530 4,040 7,140 14,600
1,400 110 230 411 843 1,260 2,430 3,880 6,860 14,000
1,500 106 221 396 812 1,220 2,340 3,740 6,600 13,500
1,600 102 214 382 784 1,180 2,260 3,610 6,380 13,000
1,700 99 207 370 759 1,140 2,190 3,490 6,170 12,600
1,800 96 200 358 736 1,100 2,120 3,390 5,980 12,200
1,900 93 195 348 715 1,070 2,060 3,290 5,810 11,900
2,000 91 189 339 695 1,040 2,010 3,200 5,650 11,500
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Note: All table entries have been rounded to three significant digits.
TABLE 402.4(4)
SCHEDULE 40 METALLIC PIPE 		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 (ft) Capacity in Cubic Feet of Gas Per Hour
10 2,350 4,920 9,270 19,000 28,500 54,900 87,500 155,000 316,000
20 1,620 3,380 6,370 13,100 19,600 37,700 60,100 106,000 217,000
30 1,300 2,720 5,110 10,500 15,700 30,300 48,300 85,400 174,000
40 1,110 2,320 4,380 8,990 13,500 25,900 41,300 73,100 149,000
50 985 2,060 3,880 7,970 11,900 23,000 36,600 64,800 132,000
60 892 1,870 3,520 7,220 10,800 20,800 33,200 58,700 120,000
70 821 1,720 3,230 6,640 9,950 19,200 30,500 54,000 110,000
80 764 1,600 3,010 6,180 9,260 17,800 28,400 50,200 102,000
90 717 1,500 2,820 5,800 8,680 16,700 26,700 47,100 96,100
100 677 1,420 2,670 5,470 8,200 15,800 25,200 44,500 90,800
125 600 1,250 2,360 4,850 7,270 14,000 22,300 39,500 80,500
150 544 1,140 2,140 4,400 6,590 12,700 20,200 35,700 72,900
175 500 1,050 1,970 4,040 6,060 11,700 18,600 32,900 67,100
200 465 973 1,830 3,760 5,640 10,900 17,300 30,600 62,400
250 412 862 1,620 3,330 5,000 9,620 15,300 27,100 55,300
300 374 781 1,470 3,020 4,530 8,720 13,900 24,600 50,100
350 344 719 1,350 2,780 4,170 8,020 12,800 22,600 46,100
400 320 669 1,260 2,590 3,870 7,460 11,900 21,000 42,900
450 300 627 1,180 2,430 3,640 7,000 11,200 19,700 40,200
500 283 593 1,120 2,290 3,430 6,610 10,500 18,600 38,000
550 269 563 1,060 2,180 3,260 6,280 10,000 17,700 36,100
600 257 537 1,010 2,080 3,110 5,990 9,550 16,900 34,400
650 246 514 969 1,990 2,980 5,740 9,150 16,200 33,000
700 236 494 931 1,910 2,860 5,510 8,790 15,500 31,700
750 228 476 897 1,840 2,760 5,310 8,470 15,000 30,500
800 220 460 866 1,780 2,660 5,130 8,180 14,500 29,500
850 213 445 838 1,720 2,580 4,960 7,910 14,000 28,500
900 206 431 812 1,670 2,500 4,810 7,670 13,600 27,700
950 200 419 789 1,620 2,430 4,670 7,450 13,200 26,900
1,000 195 407 767 1,580 2,360 4,550 7,240 12,800 26,100
1,100 185 387 729 1,500 2,240 4,320 6,890 12,200 24,800
1,200 177 369 695 1,430 2,140 4,120 6,570 11,600 23,700
1,300 169 353 666 1,370 2,050 3,940 6,290 11,100 22,700
1,400 162 340 640 1,310 1,970 3,790 6,040 10,700 21,800
1,500 156 327 616 1,270 1,900 3,650 5,820 10,300 21,000
1,600 151 316 595 1,220 1,830 3,530 5,620 10,000 20,300
1,700 146 306 576 1,180 1,770 3,410 5,440 9,610 19,600
1,800 142 296 558 1,150 1,720 3,310 5,270 9,320 19,000
1,900 138 288 542 1,110 1,670 3,210 5,120 9,050 18,400
2,000 134 280 527 1,080 1,620 3,120 4,980 8,800 18,000
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Note: All table entries have been rounded to three significant digits.
TABLE 402.4(5)
SCHEDULE 40 METALLIC PIPE 		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 (ft) Capacity in Cubic Feet of Gas Per Hour
10 3,190 6,430 11,800 24,200 36,200 69,700 111,000 196,000 401,000
20 2,250 4,550 8,320 17,100 25,600 49,300 78,600 139,000 283,000
30 1,840 3,720 6,790 14,000 20,900 40,300 64,200 113,000 231,000
40 1,590 3,220 5,880 12,100 18,100 34,900 55,600 98,200 200,000
50 1,430 2,880 5,260 10,800 16,200 31,200 49,700 87,900 179,000
60 1,300 2,630 4,800 9,860 14,800 28,500 45,400 80,200 164,000
70 1,200 2,430 4,450 9,130 13,700 26,400 42,000 74,300 151,000
80 1,150 2,330 4,260 8,540 12,800 24,700 39,300 69,500 142,000
90 1,060 2,150 3,920 8,050 12,100 23,200 37,000 65,500 134,000
100 979 1,980 3,620 7,430 11,100 21,400 34,200 60,400 123,000
125 876 1,770 3,240 6,640 9,950 19,200 30,600 54,000 110,000
150 786 1,590 2,910 5,960 8,940 17,200 27,400 48,500 98,900
175 728 1,470 2,690 5,520 8,270 15,900 25,400 44,900 91,600
200 673 1,360 2,490 5,100 7,650 14,700 23,500 41,500 84,700
250 558 1,170 2,200 4,510 6,760 13,000 20,800 36,700 74,900
300 506 1,060 1,990 4,090 6,130 11,800 18,800 33,300 67,800
350 465 973 1,830 3,760 5,640 10,900 17,300 30,600 62,400
400 433 905 1,710 3,500 5,250 10,100 16,100 28,500 58,100
450 406 849 1,600 3,290 4,920 9,480 15,100 26,700 54,500
500 384 802 1,510 3,100 4,650 8,950 14,300 25,200 51,500
550 364 762 1,440 2,950 4,420 8,500 13,600 24,000 48,900
600 348 727 1,370 2,810 4,210 8,110 12,900 22,900 46,600
650 333 696 1,310 2,690 4,030 7,770 12,400 21,900 44,600
700 320 669 1,260 2,590 3,880 7,460 11,900 21,000 42,900
750 308 644 1,210 2,490 3,730 7,190 11,500 20,300 41,300
800 298 622 1,170 2,410 3,610 6,940 11,100 19,600 39,900
850 288 602 1,130 2,330 3,490 6,720 10,700 18,900 38,600
900 279 584 1,100 2,260 3,380 6,520 10,400 18,400 37,400
950 271 567 1,070 2,190 3,290 6,330 10,100 17,800 36,400
1,000 264 551 1,040 2,130 3,200 6,150 9,810 17,300 35,400
1,100 250 524 987 2,030 3,030 5,840 9,320 16,500 33,600
1,200 239 500 941 1,930 2,900 5,580 8,890 15,700 32,000
1,300 229 478 901 1,850 2,770 5,340 8,510 15,000 30,700
1,400 220 460 866 1,780 2,660 5,130 8,180 14,500 29,500
1,500 212 443 834 1,710 2,570 4,940 7,880 13,900 28,400
1,600 205 428 806 1,650 2,480 4,770 7,610 13,400 27,400
1,700 198 414 780 1,600 2,400 4,620 7,360 13,000 26,500
1,800 192 401 756 1,550 2,330 4,480 7,140 12,600 25,700
1,900 186 390 734 1,510 2,260 4,350 6,930 12,300 25,000
2,000 181 379 714 1,470 2,200 4,230 6,740 11,900 24,300
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Note: All table entries have been rounded to three significant digits.
TABLE 402.4(6)
SEMIRIGID COPPER TUBING 		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 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
Length (ft) Capacity in Cubic Feet of Gas Per Hour
10 20 42 85 148 210 448 806 1,270 2,650
20 14 29 58 102 144 308 554 873 1,820
30 11 23 47 82 116 247 445 701 1,460
40 10 20 40 70 99 211 381 600 1,250
50 NA 17 35 62 88 187 337 532 1,110
60 NA 16 32 56 79 170 306 482 1,000
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
1,000 NA NA NA 12 17 37 67 105 219
1,100 NA NA NA 12 16 35 63 100 208
1,200 NA NA NA 11 16 34 60 95 199
1,300 NA NA NA 11 15 32 58 91 190
1,400 NA NA NA 10 14 31 56 88 183
1,500 NA NA NA NA 14 30 54 84 176
1,600 NA NA NA NA 13 29 52 82 170
1,700 NA NA NA NA 13 28 50 79 164
1,800 NA NA NA NA 13 27 49 77 159
1,900 NA NA NA NA 12 26 47 74 155
2,000 NA NA NA NA 12 25 46 72 151
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

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.    NA means a flow of less than 10 cfh.

3.    All table entries have been rounded to three significant digits.
TABLE 402.4(7)
SEMIRIGID COPPER TUBING 		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 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
Length (ft) Capacity in Cubic Feet of Gas Per Hour
10 27 55 111 195 276 590 1,060 1,680 3,490
20 18 38 77 134 190 406 730 1,150 2,400
30 15 30 61 107 152 326 586 925 1,930
40 13 26 53 92 131 279 502 791 1,650
50 11 23 47 82 116 247 445 701 1,460
60 10 21 42 74 105 224 403 635 1,320
70 NA 19 39 68 96 206 371 585 1,220
80 NA 18 36 63 90 192 345 544 1,130
90 NA 17 34 59 84 180 324 510 1,060
100 NA 16 32 56 79 170 306 482 1,000
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
1,000 NA NA NA 16 23 49 88 139 289
1,100 NA NA NA 15 22 46 84 132 274
1,200 NA NA NA 15 21 44 80 126 262
1,300 NA NA NA 14 20 42 76 120 251
1,400 NA NA NA 13 19 41 73 116 241
1,500 NA NA NA 13 18 39 71 111 232
1,600 NA NA NA 13 18 38 68 108 224
1,700 NA NA NA 12 17 37 66 104 217
1,800 NA NA NA 12 17 36 64 101 210
1,900 NA NA NA 11 16 35 62 98 204
2,000 NA NA NA 11 16 34 60 95 199
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

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.    NA means a flow of less than 10 cfh.

3.    All table entries have been rounded to three significant digits.
TABLE 402.4(8)
SEMIRIGID COPPER TUBING 		Gas Natural
Inlet Pressure Less than 2 psi
Pressure Drop 1.0 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 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
Length (ft) Capacity in Cubic Feet of Gas Per Hour
10 39 80 162 283 402 859 1,550 2,440 5,080
20 27 55 111 195 276 590 1,060 1,680 3,490
30 21 44 89 156 222 474 853 1,350 2,800
40 18 38 77 134 190 406 730 1,150 2,400
50 16 33 68 119 168 359 647 1,020 2,130
60 15 30 61 107 152 326 586 925 1,930
70 13 28 57 99 140 300 539 851 1,770
80 13 26 53 92 131 279 502 791 1,650
90 12 24 49 86 122 262 471 742 1,550
100 11 23 47 82 116 247 445 701 1,460
125 NA 20 41 72 103 219 394 622 1,290
150 NA 18 37 65 93 198 357 563 1,170
175 NA 17 34 60 85 183 329 518 1,080
200 NA 16 32 56 79 170 306 482 1,000
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
1,000 NA NA 13 23 33 71 128 202 420
1,100 NA NA 13 22 32 68 122 192 399
1,200 NA NA 12 21 30 64 116 183 381
1,300 NA NA 12 20 29 62 111 175 365
1,400 NA NA 11 20 28 59 107 168 350
1,500 NA NA 11 19 27 57 103 162 338
1,600 NA NA 10 18 26 55 99 156 326
1,700 NA NA 10 18 25 53 96 151 315
1,800 NA NA NA 17 24 52 93 147 306
1,900 NA NA NA 17 24 50 90 143 297
2,000 NA NA NA 16 23 49 88 139 289
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

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.    NA means a flow of less than 10 cfh.

3.    All table entries have been rounded to three significant digits.
TABLE 402.4(9)
SEMIRIGID COPPER TUBING 		Gas Natural
Inlet Pressure Less than 2.0 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 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
Length (ft) Capacity in Cubic Feet of Gas Per Hour
10 190 391 796 1,390 1,970 4,220 7,590 12,000 24,900
20 130 269 547 956 1,360 2,900 5,220 8,230 17,100
30 105 216 439 768 1,090 2,330 4,190 6,610 13,800
40 90 185 376 657 932 1,990 3,590 5,650 11,800
50 79 164 333 582 826 1,770 3,180 5,010 10,400
60 72 148 302 528 749 1,600 2,880 4,540 9,460
70 66 137 278 486 689 1,470 2,650 4,180 8,700
80 62 127 258 452 641 1,370 2,460 3,890 8,090
90 58 119 243 424 601 1,280 2,310 3,650 7,590
100 55 113 229 400 568 1,210 2,180 3,440 7,170
125 48 100 203 355 503 1,080 1,940 3,050 6,360
150 44 90 184 321 456 974 1,750 2,770 5,760
175 40 83 169 296 420 896 1,610 2,540 5,300
200 38 77 157 275 390 834 1,500 2,370 4,930
250 33 69 140 244 346 739 1,330 2,100 4,370
300 30 62 126 221 313 670 1,210 1,900 3,960
350 28 57 116 203 288 616 1,110 1,750 3,640
400 26 53 108 189 268 573 1,030 1,630 3,390
450 24 50 102 177 252 538 968 1,530 3,180
500 23 47 96 168 238 508 914 1,440 3,000
550 22 45 91 159 226 482 868 1,370 2,850
600 21 43 87 152 215 460 829 1,310 2,720
650 20 41 83 145 206 441 793 1,250 2,610
700 19 39 80 140 198 423 762 1,200 2,500
750 18 38 77 135 191 408 734 1,160 2,410
800 18 37 74 130 184 394 709 1,120 2,330
850 17 35 72 126 178 381 686 1,080 2,250
900 17 34 70 122 173 370 665 1,050 2,180
950 16 33 68 118 168 359 646 1,020 2,120
1,000 16 32 66 115 163 349 628 991 2,060
1,100 15 31 63 109 155 332 597 941 1,960
1,200 14 29 60 104 148 316 569 898 1,870
1,300 14 28 57 100 142 303 545 860 1,790
1,400 13 27 55 96 136 291 524 826 1,720
1,500 13 26 53 93 131 280 505 796 1,660
1,600 12 25 51 89 127 271 487 768 1,600
1,700 12 24 49 86 123 262 472 744 1,550
1,800 11 24 48 84 119 254 457 721 1,500
1,900 11 23 47 81 115 247 444 700 1,460
2,000 11 22 45 79 112 240 432 681 1,420
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

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.    All table entries have been rounded to three significant digits.
TABLE 402.4(10)
SEMIRIGID COPPER TUBING 		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 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
Length (ft) Capacity in Cubic Feet of Gas Per Hour
10 245 506 1,030 1,800 2,550 5,450 9,820 15,500 32,200
20 169 348 708 1,240 1,760 3,750 6,750 10,600 22,200
30 135 279 568 993 1,410 3,010 5,420 8,550 17,800
40 116 239 486 850 1,210 2,580 4,640 7,310 15,200
50 103 212 431 754 1,070 2,280 4,110 6,480 13,500
60 93 192 391 683 969 2,070 3,730 5,870 12,200
70 86 177 359 628 891 1,900 3,430 5,400 11,300
80 80 164 334 584 829 1,770 3,190 5,030 10,500
90 75 154 314 548 778 1,660 2,990 4,720 9,820
100 71 146 296 518 735 1,570 2,830 4,450 9,280
125 63 129 263 459 651 1,390 2,500 3,950 8,220
150 57 117 238 416 590 1,260 2,270 3,580 7,450
175 52 108 219 383 543 1,160 2,090 3,290 6,850
200 49 100 204 356 505 1,080 1,940 3,060 6,380
250 43 89 181 315 448 956 1,720 2,710 5,650
300 39 80 164 286 406 866 1,560 2,460 5,120
350 36 74 150 263 373 797 1,430 2,260 4,710
400 33 69 140 245 347 741 1,330 2,100 4,380
450 31 65 131 230 326 696 1,250 1,970 4,110
500 30 61 124 217 308 657 1,180 1,870 3,880
550 28 58 118 206 292 624 1,120 1,770 3,690
600 27 55 112 196 279 595 1,070 1,690 3,520
650 26 53 108 188 267 570 1,030 1,620 3,370
700 25 51 103 181 256 548 986 1,550 3,240
750 24 49 100 174 247 528 950 1,500 3,120
800 23 47 96 168 239 510 917 1,450 3,010
850 22 46 93 163 231 493 888 1,400 2,920
900 22 44 90 158 224 478 861 1,360 2,830
950 21 43 88 153 217 464 836 1,320 2,740
1,000 20 42 85 149 211 452 813 1,280 2,670
1,100 19 40 81 142 201 429 772 1,220 2,540
1,200 18 38 77 135 192 409 737 1,160 2,420
1,300 18 36 74 129 183 392 705 1,110 2,320
1,400 17 35 71 124 176 376 678 1,070 2,230
1,500 16 34 68 120 170 363 653 1,030 2,140
1,600 16 33 66 116 164 350 630 994 2,070
1,700 15 31 64 112 159 339 610 962 2,000
1,800 15 30 62 108 154 329 592 933 1,940
1,900 14 30 60 105 149 319 575 906 1,890
2,000 14 29 59 102 145 310 559 881 1,830
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

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.    All table entries have been rounded to three significant digits.
TABLE 402.4(11)
SEMIRIGID COPPER TUBING 		Gas Natural
Inlet Pressure 2.0 psi
Pressure Drop 1.5 psi
Specific Gravity 0.60
SPECIAL USE Pipe sizing between point of delivery and the house line regulator. Total load supplied by a single house line regulator not exceeding 150 cubic feet per hour.
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 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
Length (ft) Capacity in Cubic Feet of Gas Per Hour
10 303 625 1,270 2,220 3,150 6,740 12,100 19,100 39,800
20 208 430 874 1,530 2,170 4,630 8,330 13,100 27,400
30 167 345 702 1,230 1,740 3,720 6,690 10,600 22,000
40 143 295 601 1,050 1,490 3,180 5,730 9,030 18,800
50 127 262 532 931 1,320 2,820 5,080 8,000 16,700
60 115 237 482 843 1,200 2,560 4,600 7,250 15,100
70 106 218 444 776 1,100 2,350 4,230 6,670 13,900
80 98 203 413 722 1,020 2,190 3,940 6,210 12,900
90 92 190 387 677 961 2,050 3,690 5,820 12,100
100 87 180 366 640 907 1,940 3,490 5,500 11,500
125 77 159 324 567 804 1,720 3,090 4,880 10,200
150 70 144 294 514 729 1,560 2,800 4,420 9,200
175 64 133 270 472 670 1,430 2,580 4,060 8,460
200 60 124 252 440 624 1,330 2,400 3,780 7,870
250 53 110 223 390 553 1,180 2,130 3,350 6,980
300 48 99 202 353 501 1,070 1,930 3,040 6,320
350 44 91 186 325 461 984 1,770 2,790 5,820
400 41 85 173 302 429 916 1,650 2,600 5,410
450 39 80 162 283 402 859 1,550 2,440 5,080
500 36 75 153 268 380 811 1,460 2,300 4,800
550 35 72 146 254 361 771 1,390 2,190 4,560
600 33 68 139 243 344 735 1,320 2,090 4,350
650 32 65 133 232 330 704 1,270 2,000 4,160
700 30 63 128 223 317 676 1,220 1,920 4,000
750 29 60 123 215 305 652 1,170 1,850 3,850
800 28 58 119 208 295 629 1,130 1,790 3,720
850 27 57 115 201 285 609 1,100 1,730 3,600
900 27 55 111 195 276 590 1,060 1,680 3,490
950 26 53 108 189 268 573 1,030 1,630 3,390
1,000 25 52 105 184 261 558 1,000 1,580 3,300
1,100 24 49 100 175 248 530 954 1,500 3,130
1,200 23 47 95 167 237 505 910 1,430 2,990
1,300 22 45 91 160 227 484 871 1,370 2,860
1,400 21 43 88 153 218 465 837 1,320 2,750
1,500 20 42 85 148 210 448 806 1,270 2,650
1,600 19 40 82 143 202 432 779 1,230 2,560
1,700 19 39 79 138 196 419 753 1,190 2,470
1,800 18 38 77 134 190 406 731 1,150 2,400
1,900 18 37 74 130 184 394 709 1,120 2,330
2,000 17 36 72 126 179 383 690 1,090 2,270
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

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 not greater than 1 inch w.c.

3.    All table entries have been rounded to three significant digits.
TABLE 402.4(12)
SEMIRIGID COPPER TUBING 		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 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
Length (ft) Capacity in Cubic Feet of Gas Per Hour
10 511 1,050 2,140 3,750 5,320 11,400 20,400 32,200 67,100
20 351 724 1,470 2,580 3,650 7,800 14,000 22,200 46,100
30 282 582 1,180 2,070 2,930 6,270 11,300 17,800 37,000
40 241 498 1,010 1,770 2,510 5,360 9,660 15,200 31,700
50 214 441 898 1,570 2,230 4,750 8,560 13,500 28,100
60 194 400 813 1,420 2,020 4,310 7,750 12,200 25,500
70 178 368 748 1,310 1,860 3,960 7,130 11,200 23,400
80 166 342 696 1,220 1,730 3,690 6,640 10,500 21,800
90 156 321 653 1,140 1,620 3,460 6,230 9,820 20,400
100 147 303 617 1,080 1,530 3,270 5,880 9,270 19,300
125 130 269 547 955 1,360 2,900 5,210 8,220 17,100
150 118 243 495 866 1,230 2,620 4,720 7,450 15,500
175 109 224 456 796 1,130 2,410 4,350 6,850 14,300
200 101 208 424 741 1,050 2,250 4,040 6,370 13,300
250 90 185 376 657 932 1,990 3,580 5,650 11,800
300 81 167 340 595 844 1,800 3,250 5,120 10,700
350 75 154 313 547 777 1,660 2,990 4,710 9,810
400 69 143 291 509 722 1,540 2,780 4,380 9,120
450 65 134 273 478 678 1,450 2,610 4,110 8,560
500 62 127 258 451 640 1,370 2,460 3,880 8,090
550 58 121 245 429 608 1,300 2,340 3,690 7,680
600 56 115 234 409 580 1,240 2,230 3,520 7,330
650 53 110 224 392 556 1,190 2,140 3,370 7,020
700 51 106 215 376 534 1,140 2,050 3,240 6,740
750 49 102 207 362 514 1,100 1,980 3,120 6,490
800 48 98 200 350 497 1,060 1,910 3,010 6,270
850 46 95 194 339 481 1,030 1,850 2,910 6,070
900 45 92 188 328 466 1,000 1,790 2,820 5,880
950 43 90 182 319 452 967 1,740 2,740 5,710
1,000 42 87 177 310 440 940 1,690 2,670 5,560
1,100 40 83 169 295 418 893 1,610 2,530 5,280
1,200 38 79 161 281 399 852 1,530 2,420 5,040
1,300 37 76 154 269 382 816 1,470 2,320 4,820
1,400 35 73 148 259 367 784 1,410 2,220 4,630
1,500 34 70 143 249 353 755 1,360 2,140 4,460
1,600 33 68 138 241 341 729 1,310 2,070 4,310
1,700 32 65 133 233 330 705 1,270 2,000 4,170
1,800 31 63 129 226 320 684 1,230 1,940 4,040
1,900 30 62 125 219 311 664 1,200 1,890 3,930
2,000 29 60 122 213 302 646 1,160 1,830 3,820
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

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.    All table entries have been rounded to three significant digits.
TABLE 402.4(13)
CORRUGATED STAINLESS STEEL TUBING (CSST) 		Gas Natural
Inlet Pressure Less than 2 psi
Pressure Drop 0.5 in. w.c.
Specific Gravity 0.60
TUBE SIZE (EHD)
Flow
Designation 		13 15 18 19 23 25 30 31 37 46 48 60 62
Length (ft) Capacity in Cubic Feet of Gas Per Hour
5 46 63 115 134 225 270 471 546 895 1,790 2,070 3,660 4,140
10 32 44 82 95 161 192 330 383 639 1,260 1,470 2,600 2,930
15 25 35 66 77 132 157 267 310 524 1,030 1,200 2,140 2,400
20 22 31 58 67 116 137 231 269 456 888 1,050 1,850 2,080
25 19 27 52 60 104 122 206 240 409 793 936 1,660 1,860
30 18 25 47 55 96 112 188 218 374 723 856 1,520 1,700
40 15 21 41 47 83 97 162 188 325 625 742 1,320 1,470
50 13 19 37 42 75 87 144 168 292 559 665 1,180 1,320
60 12 17 34 38 68 80 131 153 267 509 608 1,080 1,200
70 11 16 31 36 63 74 121 141 248 471 563 1,000 1,110
80 10 15 29 33 60 69 113 132 232 440 527 940 1,040
90 10 14 28 32 57 65 107 125 219 415 498 887 983
100 9 13 26 30 54 62 101 118 208 393 472 843 933
150 7 10 20 23 42 48 78 91 171 320 387 691 762
200 6 9 18 21 38 44 71 82 148 277 336 600 661
250 5 8 16 19 34 39 63 74 133 247 301 538 591
300 5 7 15 17 32 36 57 67 95 226 275 492 540
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

1.    Table includes losses for four 90-degree bends and two end fittings. Tubing runs with larger numbers of bends and/or fittings shall be increased by an equivalent length of tubing to the following equation: L = 1.3n, where L is additional length (feet) of tubing and n is the number of additional fittings and/or bends.

2.    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.

3.    All table entries have been rounded to three significant digits.
TABLE 402.4(14)
CORRUGATED STAINLESS STEEL TUBING (CSST) 		Gas Natural
Inlet Pressure Less than 2 psi
Pressure Drop 3.0 in. w.c.
Specific Gravity 0.60
TUBE SIZE (EHD)
Flow
Designation 		13 15 18 19 23 25 30 31 37 46 48 60 62
Length (ft) Capacity in Cubic Feet of Gas Per Hour
5 120 160 277 327 529 649 1,180 1,370 2,140 4,430 5,010 8,800 10,100
10 83 112 197 231 380 462 828 958 1,530 3,200 3,560 6,270 7,160
15 67 90 161 189 313 379 673 778 1,250 2,540 2,910 5,140 5,850
20 57 78 140 164 273 329 580 672 1,090 2,200 2,530 4,460 5,070
25 51 69 125 147 245 295 518 599 978 1,960 2,270 4,000 4,540
30 46 63 115 134 225 270 471 546 895 1,790 2,070 3,660 4,140
40 39 54 100 116 196 234 407 471 778 1,550 1,800 3,180 3,590
50 35 48 89 104 176 210 363 421 698 1,380 1,610 2,850 3,210
60 32 44 82 95 161 192 330 383 639 1,260 1,470 2,600 2,930
70 29 41 76 88 150 178 306 355 593 1,170 1,360 2,420 2,720
80 27 38 71 82 141 167 285 331 555 1,090 1,280 2,260 2,540
90 26 36 67 77 133 157 268 311 524 1,030 1,200 2,140 2,400
100 24 34 63 73 126 149 254 295 498 974 1,140 2,030 2,280
150 19 27 52 60 104 122 206 240 409 793 936 1,660 1,860
200 17 23 45 52 91 106 178 207 355 686 812 1,440 1,610
250 15 21 40 46 82 95 159 184 319 613 728 1,290 1,440
300 13 19 37 42 75 87 144 168 234 559 665 1,180 1,320
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

1.    Table includes losses for four 90-degree bends and two end fittings. Tubing runs with larger numbers of bends and/or fittings shall be increased by an equivalent length of tubing to the following equation: L = 1.3n where L is additional length (feet) of tubing and n is the number of additional fittings and/or bends.

2.    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.

3.    All table entries have been rounded to three significant digits.
TABLE 402.4(15)
CORRUGATED STAINLESS STEEL TUBING (CSST) 		Gas Natural
Inlet Pressure Less than 2 psi
Pressure Drop 6.0 in. w.c.
Specific Gravity 0.60
TUBE SIZE (EHD)
Flow
Designation 		13 15 18 19 23 25 30 31 37 46 48 60 62
Length (ft) Capacity in Cubic Feet of Gas Per Hour
5 173 229 389 461 737 911 1,690 1,950 3,000 6,280 7,050 12,400 14,260
10 120 160 277 327 529 649 1,180 1,370 2,140 4,430 5,010 8,800 10,100
15 96 130 227 267 436 532 960 1,110 1,760 3,610 4,100 7,210 8,260
20 83 112 197 231 380 462 828 958 1,530 3,120 3,560 6,270 7,160
25 74 99 176 207 342 414 739 855 1,370 2,790 3,190 5,620 6,400
30 67 90 161 189 313 379 673 778 1,250 2,540 2,910 5,140 5,850
40 57 78 140 164 273 329 580 672 1,090 2,200 2,530 4,460 5,070
50 51 69 125 147 245 295 518 599 978 1,960 2,270 4,000 4,540
60 46 63 115 134 225 270 471 546 895 1,790 2,070 3,660 4,140
70 42 58 106 124 209 250 435 505 830 1,660 1,920 3,390 3,840
80 39 54 100 116 196 234 407 471 778 1,550 1,800 3,180 3,590
90 37 51 94 109 185 221 383 444 735 1,460 1,700 3,000 3,390
100 35 48 89 104 176 210 363 421 698 1,380 1,610 2,850 3,210
150 28 39 73 85 145 172 294 342 573 1,130 1,320 2,340 2,630
200 24 34 63 73 126 149 254 295 498 974 1,140 2,030 2,280
250 21 30 57 66 114 134 226 263 447 870 1,020 1,820 2,040
300 19 27 52 60 104 122 206 240 409 793 936 1,660 1,860
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

1.    Table includes losses for four 90-degree bends and two end fittings. Tubing runs with larger numbers of bends and/or fittings shall be increased by an equivalent length of tubing to the following equation: L = 1.3n where L is additional length (feet) of tubing and n is the number of additional fittings and/or bends.

2.    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.

3.    All table entries have been rounded to three significant digits.
TABLE 402.4(16)
CORRUGATED STAINLESS STEEL TUBING (CSST) 		Gas Natural
Inlet Pressure 2.0 psi
Pressure Drop 1.0 psi
Specific Gravity 0.60
TUBE SIZE (EHD)
Flow
Designation 		13 15 18 19 23 25 30 31 37 46 48 60 62
Length (ft) Capacity in Cubic Feet of Gas Per Hour
10 270 353 587 700 1,100 1,370 2,590 2,990 4,510 9,600 10,700 18,600 21,600
25 166 220 374 444 709 876 1,620 1,870 2,890 6,040 6,780 11,900 13,700
30 151 200 342 405 650 801 1,480 1,700 2,640 5,510 6,200 10,900 12,500
40 129 172 297 351 567 696 1,270 1,470 2,300 4,760 5,380 9,440 10,900
50 115 154 266 314 510 624 1,140 1,310 2,060 4,260 4,820 8,470 9,720
75 93 124 218 257 420 512 922 1,070 1,690 3,470 3,950 6,940 7,940
80 89 120 211 249 407 496 892 1,030 1,640 3,360 3,820 6,730 7,690
100 79 107 189 222 366 445 795 920 1,470 3,000 3,420 6,030 6,880
150 64 87 155 182 302 364 646 748 1,210 2,440 2,800 4,940 5,620
200 55 75 135 157 263 317 557 645 1,050 2,110 2,430 4,290 4,870
250 49 67 121 141 236 284 497 576 941 1,890 2,180 3,850 4,360
300 44 61 110 129 217 260 453 525 862 1,720 1,990 3,520 3,980
400 38 52 96 111 189 225 390 453 749 1,490 1,730 3,060 3,450
500 34 46 86 100 170 202 348 404 552 1,330 1,550 2,740 3,090
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

1.    Table does not include effect of pressure drop across the line regulator. Where regulator loss exceeds 3/4 psi, DO NOT USE THIS TABLE. Consult with the regulator manufacturer for pressure drops and capacity factors. Pressure drops across a regulator may vary with flow rate.

2.    CAUTION: Capacities shown in the table might exceed maximum capacity for a selected regulator. Consult with the regulator or tubing manufacturer for guidance.

3.    Table includes losses for four 90-degree bends and two end fittings. Tubing runs with larger numbers of bends and/or fittings shall be increased by an equivalent length of tubing to the following equation: L = 1.3n where L is additional length (feet) of tubing and n is the number of additional fittings and/or bends.

4.    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.

5.    All table entries have been rounded to three significant digits.
TABLE 402.4(17)
CORRUGATED STAINLESS STEEL TUBING (CSST) 		Gas Natural
Inlet Pressure 5.0 psi
Pressure Drop 3.5 psi
Specific Gravity 0.60
TUBE SIZE (EHD)
Flow
Designation 		13 15 18 19 23 25 30 31 37 46 48 60 62
Length (ft) Capacity in Cubic Feet of Gas Per Hour
10 523 674 1,080 1,300 2,000 2,530 4,920 5,660 8,300 18,100 19,800 34,400 40,400
25 322 420 691 827 1,290 1,620 3,080 3,540 5,310 11,400 12,600 22,000 25,600
30 292 382 632 755 1,180 1,480 2,800 3,230 4,860 10,400 11,500 20,100 23,400
40 251 329 549 654 1,030 1,280 2,420 2,790 4,230 8,970 10,000 17,400 20,200
50 223 293 492 586 926 1,150 2,160 2,490 3,790 8,020 8,930 15,600 18,100
75 180 238 403 479 763 944 1,750 2,020 3,110 6,530 7,320 12,800 14,800
80 174 230 391 463 740 915 1,690 1,960 3,020 6,320 7,090 12,400 14,300
100 154 205 350 415 665 820 1,510 1,740 2,710 5,650 6,350 11,100 12,800
150 124 166 287 339 548 672 1,230 1,420 2,220 4,600 5,200 9,130 10,500
200 107 143 249 294 478 584 1,060 1,220 1,930 3,980 4,510 7,930 9,090
250 95 128 223 263 430 524 945 1,090 1,730 3,550 4,040 7,110 8,140
300 86 116 204 240 394 479 860 995 1,590 3,240 3,690 6,500 7,430
400 74 100 177 208 343 416 742 858 1,380 2,800 3,210 5,650 6,440
500 66 89 159 186 309 373 662 766 1,040 2,500 2,870 5,060 5,760
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

1.    Table does not include effect of pressure drop across the line regulator. Where regulator loss exceeds 3/4 psi, DO NOT USE THIS TABLE. Consult with the regulator manufacturer for pressure drops and capacity factors. Pressure drops across a regulator may vary with flow rate.

2.    CAUTION: Capacities shown in the table might exceed maximum capacity for a selected regulator. Consult with the regulator or tubing manufacturer for guidance.

3.    Table includes losses for four 90-degree bends and two end fittings. Tubing runs with larger numbers of bends and/or fittings shall be increased by an equivalent length of tubing to the following equation: L = 1.3n where L is additional length (feet) of tubing and n is the number of additional fittings and/or bends.

4.    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.

5.    All table entries have been rounded to three significant digits.
TABLE 402.4(18)
POLYETHYLENE PLASTIC PIPE 		Gas Natural
Inlet Pressure Less than 2 psi
Pressure Drop 0.3 in. w.c.
Specific Gravity 0.60
PIPE SIZE (in.)
Nominal OD 1/2 3/4 1 11/4 11/2 2
Designation SDR 9.33 SDR 11.0 SDR 11.00 SDR 10.00 SDR 11.00 SDR 11.00
Actual ID 0.660 0.860 1.077 1.328 1.554 1.943
Length (ft) Capacity in Cubic Feet of Gas per Hour
10 153 305 551 955 1,440 2,590
20 105 210 379 656 991 1,780
30 84 169 304 527 796 1,430
40 72 144 260 451 681 1,220
50 64 128 231 400 604 1,080
60 58 116 209 362 547 983
70 53 107 192 333 503 904
80 50 99 179 310 468 841
90 46 93 168 291 439 789
100 44 88 159 275 415 745
125 39 78 141 243 368 661
150 35 71 127 221 333 598
175 32 65 117 203 306 551
200 30 60 109 189 285 512
250 27 54 97 167 253 454
300 24 48 88 152 229 411
350 22 45 81 139 211 378
400 21 42 75 130 196 352
450 19 39 70 122 184 330
500 18 37 66 115 174 312
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Note: All table entries have been rounded to three significant digits.
TABLE 402.4(19)
POLYETHYLENE PLASTIC PIPE 		Gas Natural
Inlet Pressure Less than 2 psi
Pressure Drop 0.5 in. w.c.
Specific Gravity 0.60
PIPE SIZE (in.)
Nominal OD 1/2 3/4 1 11/4 11/2 2
Designation SDR 9.33 SDR 11.0 SDR 11.00 SDR 10.00 SDR 11.00 SDR 11.00
Actual ID 0.660 0.860 1.077 1.328 1.554 1.943
Length (ft) Capacity in Cubic Feet of Gas per Hour
10 201 403 726 1,260 1,900 3,410
20 138 277 499 865 1,310 2,350
30 111 222 401 695 1,050 1,880
40 95 190 343 594 898 1,610
50 84 169 304 527 796 1,430
60 76 153 276 477 721 1,300
70 70 140 254 439 663 1,190
80 65 131 236 409 617 1,110
90 61 123 221 383 579 1,040
100 58 116 209 362 547 983
125 51 103 185 321 485 871
150 46 93 168 291 439 789
175 43 86 154 268 404 726
200 40 80 144 249 376 675
250 35 71 127 221 333 598
300 32 64 115 200 302 542
350 29 59 106 184 278 499
400 27 55 99 171 258 464
450 26 51 93 160 242 435
500 24 48 88 152 229 411
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Note: All table entries have been rounded to three significant digits.
TABLE 402.4(20)
POLYETHYLENE PLASTIC PIPE 		Gas Natural
Inlet Pressure 2.0 psi
Pressure Drop 1.0 psi
Specific Gravity 0.60
PIPE SIZE (in.)
Nominal OD 1/2 3/4 1 11/4 11/2 2
Designation SDR 9.33 SDR 11.0 SDR 11.00 SDR 10.00 SDR 11.00 SDR 11.00
Actual ID 0.660 0.860 1.077 1.328 1.554 1.943
Length (ft) Capacity in Cubic Feet of Gas per Hour
10 1,860 3,720 6,710 11,600 17,600 31,600
20 1,280 2,560 4,610 7,990 12,100 21,700
30 1,030 2,050 3,710 6,420 9,690 17,400
40 878 1,760 3,170 5,490 8,300 14,900
50 778 1,560 2,810 4,870 7,350 13,200
60 705 1,410 2,550 4,410 6,660 12,000
70 649 1,300 2,340 4,060 6,130 11,000
80 603 1,210 2,180 3,780 5,700 10,200
90 566 1,130 2,050 3,540 5,350 9,610
100 535 1,070 1,930 3,350 5,050 9,080
125 474 949 1,710 2,970 4,480 8,050
150 429 860 1,550 2,690 4,060 7,290
175 395 791 1,430 2,470 3,730 6,710
200 368 736 1,330 2,300 3,470 6,240
250 326 652 1,180 2,040 3,080 5,530
300 295 591 1,070 1,850 2,790 5,010
350 272 544 981 1,700 2,570 4,610
400 253 506 913 1,580 2,390 4,290
450 237 475 856 1,480 2,240 4,020
500 224 448 809 1,400 2,120 3,800
550 213 426 768 1,330 2,010 3,610
600 203 406 733 1,270 1,920 3,440
650 194 389 702 1,220 1,840 3,300
700 187 374 674 1,170 1,760 3,170
750 180 360 649 1,130 1,700 3,050
800 174 348 627 1,090 1,640 2,950
850 168 336 607 1,050 1,590 2,850
900 163 326 588 1,020 1,540 2,770
950 158 317 572 990 1,500 2,690
1,000 154 308 556 963 1,450 2,610
1,100 146 293 528 915 1,380 2,480
1,200 139 279 504 873 1,320 2,370
1,300 134 267 482 836 1,260 2,270
1,400 128 257 463 803 1,210 2,180
1,500 124 247 446 773 1,170 2,100
1,600 119 239 431 747 1,130 2,030
1,700 115 231 417 723 1,090 1,960
1,800 112 224 404 701 1,060 1,900
1,900 109 218 393 680 1,030 1,850
2,000 106 212 382 662 1,000 1,800
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Note: All table entries have been rounded to three significant digits.

TABLE 402.4(21) POLYETHYLENE PLASTIC TUBING

Gas Natural
Inlet Pressure Less than 2.0 psi
Pressure Drop 0.3 in. w.c.
Specific Gravity 0.60
PLASTIC TUBING SIZE (CTS) (in.)
Nominal OD 1/2 3/4
Designation SDR 7.00 SDR 11.00
Actual ID 0.445 0.927
Length (ft) 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:    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,

1 British thermal unit per hour = 0.2931 W,

1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

1.    NA means a flow of less than 10 cfh.

2.    All table entries have been rounded to three significant digits.

TABLE 402.4(22) POLYETHYLENE PLASTIC TUBING

Gas Natural
Inlet Pressure Less than 2.0 psi
Pressure Drop 0.5 in. w.c.
Specific Gravity 0.60
PLASTIC TUBING SIZE (CTS) (in.)
Nominal OD 1/2 3/4
Designation SDR 7.00 SDR 11.00
Actual ID 0.445 0.927
Length (ft) 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:    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,

1 British thermal unit per hour = 0.2931 W,

1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

1.    NA means a flow of less than 10 cfh.

2.    All table entries have been rounded to three significant digits.
TABLE 402.4(23)
SCHEDULE 40 METALLIC PIPE 		Gas Undiluted Propane
Inlet Pressure 10.0 psi
Pressure Drop 1.0 psi
Specific Gravity 1.50
SPECIAL USE Pipe sizing between first stage (high-pressure regulator) and second stage (low-pressure regulator).
PIPE SIZE (in.)
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 (ft) Capacity in Thousands of Btu per Hour
10 3,320 6,950 13,100 26,900 40,300 77,600 124,000 219,000 446,000
20 2,280 4,780 9,000 18,500 27,700 53,300 85,000 150,000 306,000
30 1,830 3,840 7,220 14,800 22,200 42,800 68,200 121,000 246,000
40 1,570 3,280 6,180 12,700 19,000 36,600 58,400 103,000 211,000
50 1,390 2,910 5,480 11,300 16,900 32,500 51,700 91,500 187,000
60 1,260 2,640 4,970 10,200 15,300 29,400 46,900 82,900 169,000
70 1,160 2,430 4,570 9,380 14,100 27,100 43,100 76,300 156,000
80 1,080 2,260 4,250 8,730 13,100 25,200 40,100 70,900 145,000
90 1,010 2,120 3,990 8,190 12,300 23,600 37,700 66,600 136,000
100 956 2,000 3,770 7,730 11,600 22,300 35,600 62,900 128,000
125 848 1,770 3,340 6,850 10,300 19,800 31,500 55,700 114,000
150 768 1,610 3,020 6,210 9,300 17,900 28,600 50,500 103,000
175 706 1,480 2,780 5,710 8,560 16,500 26,300 46,500 94,700
200 657 1,370 2,590 5,320 7,960 15,300 24,400 43,200 88,100
250 582 1,220 2,290 4,710 7,060 13,600 21,700 38,300 78,100
300 528 1,100 2,080 4,270 6,400 12,300 19,600 34,700 70,800
350 486 1,020 1,910 3,930 5,880 11,300 18,100 31,900 65,100
400 452 945 1,780 3,650 5,470 10,500 16,800 29,700 60,600
450 424 886 1,670 3,430 5,140 9,890 15,800 27,900 56,800
500 400 837 1,580 3,240 4,850 9,340 14,900 26,300 53,700
550 380 795 1,500 3,070 4,610 8,870 14,100 25,000 51,000
600 363 759 1,430 2,930 4,400 8,460 13,500 23,900 48,600
650 347 726 1,370 2,810 4,210 8,110 12,900 22,800 46,600
700 334 698 1,310 2,700 4,040 7,790 12,400 21,900 44,800
750 321 672 1,270 2,600 3,900 7,500 12,000 21,100 43,100
800 310 649 1,220 2,510 3,760 7,240 11,500 20,400 41,600
850 300 628 1,180 2,430 3,640 7,010 11,200 19,800 40,300
900 291 609 1,150 2,360 3,530 6,800 10,800 19,200 39,100
950 283 592 1,110 2,290 3,430 6,600 10,500 18,600 37,900
1,000 275 575 1,080 2,230 3,330 6,420 10,200 18,100 36,900
1,100 261 546 1,030 2,110 3,170 6,100 9,720 17,200 35,000
1,200 249 521 982 2,020 3,020 5,820 9,270 16,400 33,400
1,300 239 499 940 1,930 2,890 5,570 8,880 15,700 32,000
1,400 229 480 903 1,850 2,780 5,350 8,530 15,100 30,800
1,500 221 462 870 1,790 2,680 5,160 8,220 14,500 29,600
1,600 213 446 840 1,730 2,590 4,980 7,940 14,000 28,600
1,700 206 432 813 1,670 2,500 4,820 7,680 13,600 27,700
1,800 200 419 789 1,620 2,430 4,670 7,450 13,200 26,900
1,900 194 407 766 1,570 2,360 4,540 7,230 12,800 26,100
2,000 189 395 745 1,530 2,290 4,410 7,030 12,400 25,400
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Note: All table entries have been rounded to three significant digits.
TABLE 402.4(24)
SCHEDULE 40 METALLIC PIPE 		Gas Undiluted Propane
Inlet Pressure 10.0 psi
Pressure Drop 3.0 psi
Specific Gravity 1.50
SPECIAL USE Pipe sizing between first stage (high-pressure regulator) and second stage (low-pressure regulator).
PIPE SIZE (in)
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 (ft) Capacity in Thousands of Btu per Hour
10 5,890 12,300 23,200 47,600 71,300 137,000 219,000 387,000 789,000
20 4,050 8,460 15,900 32,700 49,000 94,400 150,000 266,000 543,000
30 3,250 6,790 12,800 26,300 39,400 75,800 121,000 214,000 436,000
40 2,780 5,810 11,000 22,500 33,700 64,900 103,000 183,000 373,000
50 2,460 5,150 9,710 19,900 29,900 57,500 91,600 162,000 330,000
60 2,230 4,670 8,790 18,100 27,100 52,100 83,000 147,000 299,000
70 2,050 4,300 8,090 16,600 24,900 47,900 76,400 135,000 275,000
80 1,910 4,000 7,530 15,500 23,200 44,600 71,100 126,000 256,000
90 1,790 3,750 7,060 14,500 21,700 41,800 66,700 118,000 240,000
100 1,690 3,540 6,670 13,700 20,500 39,500 63,000 111,000 227,000
125 1,500 3,140 5,910 12,100 18,200 35,000 55,800 98,700 201,000
150 1,360 2,840 5,360 11,000 16,500 31,700 50,600 89,400 182,000
175 1,250 2,620 4,930 10,100 15,200 29,200 46,500 82,300 167,800
200 1,160 2,430 4,580 9,410 14,100 27,200 43,300 76,500 156,100
250 1,030 2,160 4,060 8,340 12,500 24,100 38,400 67,800 138,400
300 935 1,950 3,680 7,560 11,300 21,800 34,800 61,500 125,400
350 860 1,800 3,390 6,950 10,400 20,100 32,000 56,500 115,300
400 800 1,670 3,150 6,470 9,690 18,700 29,800 52,600 107,300
450 751 1,570 2,960 6,070 9,090 17,500 27,900 49,400 100,700
500 709 1,480 2,790 5,730 8,590 16,500 26,400 46,600 95,100
550 673 1,410 2,650 5,450 8,160 15,700 25,000 44,300 90,300
600 642 1,340 2,530 5,200 7,780 15,000 23,900 42,200 86,200
650 615 1,290 2,420 4,980 7,450 14,400 22,900 40,500 82,500
700 591 1,240 2,330 4,780 7,160 13,800 22,000 38,900 79,300
750 569 1,190 2,240 4,600 6,900 13,300 21,200 37,400 76,400
800 550 1,150 2,170 4,450 6,660 12,800 20,500 36,200 73,700
850 532 1,110 2,100 4,300 6,450 12,400 19,800 35,000 71,400
900 516 1,080 2,030 4,170 6,250 12,000 19,200 33,900 69,200
950 501 1,050 1,970 4,050 6,070 11,700 18,600 32,900 67,200
1,000 487 1,020 1,920 3,940 5,900 11,400 18,100 32,000 65,400
1,100 463 968 1,820 3,740 5,610 10,800 17,200 30,400 62,100
1,200 442 923 1,740 3,570 5,350 10,300 16,400 29,000 59,200
1,300 423 884 1,670 3,420 5,120 9,870 15,700 27,800 56,700
1,400 406 849 1,600 3,280 4,920 9,480 15,100 26,700 54,500
1,500 391 818 1,540 3,160 4,740 9,130 14,600 25,700 52,500
1,600 378 790 1,490 3,060 4,580 8,820 14,100 24,800 50,700
1,700 366 765 1,440 2,960 4,430 8,530 13,600 24,000 49,000
1,800 355 741 1,400 2,870 4,300 8,270 13,200 23,300 47,600
1,900 344 720 1,360 2,780 4,170 8,040 12,800 22,600 46,200
2,000 335 700 1,320 2,710 4,060 7,820 12,500 22,000 44,900
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Note: All table entries have been rounded to three significant digits.
TABLE 402.4(25)
SCHEDULE 40 METALLIC PIPE 		Gas Undiluted Propane
Inlet Pressure 2.0 psi
Pressure Drop 1.0 psi
Specific Gravity 1.50
PIPE SIZE (in.)
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 (ft) Capacity in Thousands of Btu per Hour
10 2,680 5,590 10,500 21,600 32,400 62,400 99,500 176,000 359,000
20 1,840 3,850 7,240 14,900 22,300 42,900 68,400 121,000 247,000
30 1,480 3,090 5,820 11,900 17,900 34,500 54,900 97,100 198,000
40 1,260 2,640 4,980 10,200 15,300 29,500 47,000 83,100 170,000
50 1,120 2,340 4,410 9,060 13,600 26,100 41,700 73,700 150,000
60 1,010 2,120 4,000 8,210 12,300 23,700 37,700 66,700 136,000
70 934 1,950 3,680 7,550 11,300 21,800 34,700 61,400 125,000
80 869 1,820 3,420 7,020 10,500 20,300 32,300 57,100 116,000
90 815 1,700 3,210 6,590 9,880 19,000 30,300 53,600 109,000
100 770 1,610 3,030 6,230 9,330 18,000 28,600 50,600 103,000
125 682 1,430 2,690 5,520 8,270 15,900 25,400 44,900 91,500
150 618 1,290 2,440 5,000 7,490 14,400 23,000 40,700 82,900
175 569 1,190 2,240 4,600 6,890 13,300 21,200 37,400 76,300
200 529 1,110 2,080 4,280 6,410 12,300 19,700 34,800 71,000
250 469 981 1,850 3,790 5,680 10,900 17,400 30,800 62,900
300 425 889 1,670 3,440 5,150 9,920 15,800 27,900 57,000
350 391 817 1,540 3,160 4,740 9,120 14,500 25,700 52,400
400 364 760 1,430 2,940 4,410 8,490 13,500 23,900 48,800
450 341 714 1,340 2,760 4,130 7,960 12,700 22,400 45,800
500 322 674 1,270 2,610 3,910 7,520 12,000 21,200 43,200
550 306 640 1,210 2,480 3,710 7,140 11,400 20,100 41,100
600 292 611 1,150 2,360 3,540 6,820 10,900 19,200 39,200
650 280 585 1,100 2,260 3,390 6,530 10,400 18,400 37,500
700 269 562 1,060 2,170 3,260 6,270 9,990 17,700 36,000
750 259 541 1,020 2,090 3,140 6,040 9,630 17,000 34,700
800 250 523 985 2,020 3,030 5,830 9,300 16,400 33,500
850 242 506 953 1,960 2,930 5,640 9,000 15,900 32,400
900 235 490 924 1,900 2,840 5,470 8,720 15,400 31,500
950 228 476 897 1,840 2,760 5,310 8,470 15,000 30,500
1,000 222 463 873 1,790 2,680 5,170 8,240 14,600 29,700
1,100 210 440 829 1,700 2,550 4,910 7,830 13,800 28,200
1,200 201 420 791 1,620 2,430 4,680 7,470 13,200 26,900
1,300 192 402 757 1,550 2,330 4,490 7,150 12,600 25,800
1,400 185 386 727 1,490 2,240 4,310 6,870 12,100 24,800
1,500 178 372 701 1,440 2,160 4,150 6,620 11,700 23,900
1,600 172 359 677 1,390 2,080 4,010 6,390 11,300 23,000
1,700 166 348 655 1,340 2,010 3,880 6,180 10,900 22,300
1,800 161 337 635 1,300 1,950 3,760 6,000 10,600 21,600
1,900 157 327 617 1,270 1,900 3,650 5,820 10,300 21,000
2,000 152 318 600 1,230 1,840 3,550 5,660 10,000 20,400
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Note: All table entries have been rounded to three significant digits.
TABLE 402.4(26)
SCHEDULE 40 METALLIC PIPE 		Gas Undiluted Propane
Inlet Pressure 11.0 in. w.c.
Pressure Drop 0.5 in. w.c.
Specific Gravity 1.50
SPECIAL USE Pipe sizing between first stage (high-pressure regulator) and second stage (low-pressure regulator).
PIPE SIZE (in.)
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 (ft) Capacity in Thousands of Btu per Hour
10 291 608 1,150 2,350 3,520 6,790 10,800 19,100 39,000
20 200 418 787 1,620 2,420 4,660 7,430 13,100 26,800
30 160 336 632 1,300 1,940 3,750 5,970 10,600 21,500
40 137 287 541 1,110 1,660 3,210 5,110 9,030 18,400
50 122 255 480 985 1,480 2,840 4,530 8,000 16,300
60 110 231 434 892 1,340 2,570 4,100 7,250 14,800
80 101 212 400 821 1,230 2,370 3,770 6,670 13,600
100 94 197 372 763 1,140 2,200 3,510 6,210 12,700
125 89 185 349 716 1,070 2,070 3,290 5,820 11,900
150 84 175 330 677 1,010 1,950 3,110 5,500 11,200
175 74 155 292 600 899 1,730 2,760 4,880 9,950
200 67 140 265 543 814 1,570 2,500 4,420 9,010
250 62 129 243 500 749 1,440 2,300 4,060 8,290
300 58 120 227 465 697 1,340 2,140 3,780 7,710
350 51 107 201 412 618 1,190 1,900 3,350 6,840
400 46 97 182 373 560 1,080 1,720 3,040 6,190
450 42 89 167 344 515 991 1,580 2,790 5,700
500 40 83 156 320 479 922 1,470 2,600 5,300
550 37 78 146 300 449 865 1,380 2,440 4,970
600 35 73 138 283 424 817 1,300 2,300 4,700
650 33 70 131 269 403 776 1,240 2,190 4,460
700 32 66 125 257 385 741 1,180 2,090 4,260
750 30 64 120 246 368 709 1,130 2,000 4,080
800 29 61 115 236 354 681 1,090 1,920 3,920
850 28 59 111 227 341 656 1,050 1,850 3,770
900 27 57 107 220 329 634 1,010 1,790 3,640
950 26 55 104 213 319 613 978 1,730 3,530
1,000 25 53 100 206 309 595 948 1,680 3,420
1,100 25 52 97 200 300 578 921 1,630 3,320
1,200 24 50 95 195 292 562 895 1,580 3,230
1,300 23 48 90 185 277 534 850 1,500 3,070
1,400 22 46 86 176 264 509 811 1,430 2,930
1,500 21 44 82 169 253 487 777 1,370 2,800
1,600 20 42 79 162 243 468 746 1,320 2,690
1,700 19 40 76 156 234 451 719 1,270 2,590
1,800 19 39 74 151 226 436 694 1,230 2,500
1,900 18 38 71 146 219 422 672 1,190 2,420
2,000 18 37 69 142 212 409 652 1,150 2,350
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Note: All table entries have been rounded to three significant digits.
TABLE 402.4(27)
SEMIRIGID COPPER TUBING 		Gas Undiluted Propane
Inlet Pressure 10.0 psi
Pressure Drop 1.0 psi
Specific Gravity 1.50
SPECIAL USE Sizing between first stage (high-pressure regulator) and second stage (low-pressure regulator).
TUBE SIZE (in.)
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 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
Length (ft) Capacity in Thousands of Btu per Hour
10 513 1,060 2,150 3,760 5,330 11,400 20,500 32,300 67,400
20 352 727 1,480 2,580 3,670 7,830 14,100 22,200 46,300
30 283 584 1,190 2,080 2,940 6,290 11,300 17,900 37,200
40 242 500 1,020 1,780 2,520 5,380 9,690 15,300 31,800
50 215 443 901 1,570 2,230 4,770 8,590 13,500 28,200
60 194 401 816 1,430 2,020 4,320 7,780 12,300 25,600
70 179 369 751 1,310 1,860 3,980 7,160 11,300 23,500
80 166 343 699 1,220 1,730 3,700 6,660 10,500 21,900
90 156 322 655 1,150 1,630 3,470 6,250 9,850 20,500
100 147 304 619 1,080 1,540 3,280 5,900 9,310 19,400
125 131 270 549 959 1,360 2,910 5,230 8,250 17,200
150 118 244 497 869 1,230 2,630 4,740 7,470 15,600
175 109 225 457 799 1,130 2,420 4,360 6,880 14,300
200 101 209 426 744 1,060 2,250 4,060 6,400 13,300
250 90 185 377 659 935 2,000 3,600 5,670 11,800
300 81 168 342 597 847 1,810 3,260 5,140 10,700
350 75 155 314 549 779 1,660 3,000 4,730 9,840
400 70 144 292 511 725 1,550 2,790 4,400 9,160
450 65 135 274 480 680 1,450 2,620 4,130 8,590
500 62 127 259 453 643 1,370 2,470 3,900 8,120
550 59 121 246 430 610 1,300 2,350 3,700 7,710
600 56 115 235 410 582 1,240 2,240 3,530 7,350
650 54 111 225 393 558 1,190 2,140 3,380 7,040
700 51 106 216 378 536 1,140 2,060 3,250 6,770
750 50 102 208 364 516 1,100 1,980 3,130 6,520
800 48 99 201 351 498 1,060 1,920 3,020 6,290
850 46 96 195 340 482 1,030 1,850 2,920 6,090
900 45 93 189 330 468 1,000 1,800 2,840 5,910
950 44 90 183 320 454 970 1,750 2,750 5,730
1,000 42 88 178 311 442 944 1,700 2,680 5,580
1,100 40 83 169 296 420 896 1,610 2,540 5,300
1,200 38 79 161 282 400 855 1,540 2,430 5,050
1,300 37 76 155 270 383 819 1,470 2,320 4,840
1,400 35 73 148 260 368 787 1,420 2,230 4,650
1,500 34 70 143 250 355 758 1,360 2,150 4,480
1,600 33 68 138 241 343 732 1,320 2,080 4,330
1,700 32 66 134 234 331 708 1,270 2,010 4,190
1,800 31 64 130 227 321 687 1,240 1,950 4,060
1,900 30 62 126 220 312 667 1,200 1,890 3,940
2,000 29 60 122 214 304 648 1,170 1,840 3,830
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic  foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

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.    All table entries have been rounded to three significant digits.
TABLE 402.4(28)
SEMIRIGID COPPER TUBING 		Gas Undiluted Propane
Inlet Pressure 11.0 in. w.c.
Pressure Drop 0.5 in. w.c.
Specific Gravity 1.50
SPECIAL USE Sizing between first stage (high-pressure regulator) and second stage (low-pressure regulator).
TUBE SIZE (in.)
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 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
Length (ft) Capacity in Thousands of Btu per Hour
10 45 93 188 329 467 997 1,800 2,830 5,890
20 31 64 129 226 321 685 1,230 1,950 4,050
30 25 51 104 182 258 550 991 1,560 3,250
40 21 44 89 155 220 471 848 1,340 2,780
50 19 39 79 138 195 417 752 1,180 2,470
60 17 35 71 125 177 378 681 1,070 2,240
70 16 32 66 115 163 348 626 988 2,060
80 15 30 61 107 152 324 583 919 1,910
90 14 28 57 100 142 304 547 862 1,800
100 13 27 54 95 134 287 517 814 1,700
125 11 24 48 84 119 254 458 722 1,500
150 10 21 44 76 108 230 415 654 1,360
175 NA 20 40 70 99 212 382 602 1,250
200 NA 18 37 65 92 197 355 560 1,170
250 NA 16 33 58 82 175 315 496 1,030
300 NA 15 30 52 74 158 285 449 936
350 NA 14 28 48 68 146 262 414 861
400 NA 13 26 45 63 136 244 385 801
450 NA 12 24 42 60 127 229 361 752
500 NA 11 23 40 56 120 216 341 710
550 NA 11 22 38 53 114 205 324 674
600 NA 10 21 36 51 109 196 309 643
650 NA NA 20 34 49 104 188 296 616
700 NA NA 19 33 47 100 180 284 592
750 NA NA 18 32 45 96 174 274 570
800 NA NA 18 31 44 93 168 264 551
850 NA NA 17 30 42 90 162 256 533
900 NA NA 17 29 41 87 157 248 517
950 NA NA 16 28 40 85 153 241 502
1,000 NA NA 16 27 39 83 149 234 488
1,100 NA NA 15 26 37 78 141 223 464
1,200 NA NA 14 25 35 75 135 212 442
1,300 NA NA 14 24 34 72 129 203 423
1,400 NA NA 13 23 32 69 124 195 407
1,500 NA NA 13 22 31 66 119 188 392
1,600 NA NA 12 21 30 64 115 182 378
1,700 NA NA 12 20 29 62 112 176 366
1,800 NA NA 11 20 28 60 108 170 355
1,900 NA NA 11 19 27 58 105 166 345
2,000 NA NA 11 19 27 57 102 161 335
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

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.    NA means a flow of less than 10,000 Btu/hr.

3.    All table entries have been rounded to three significant digits.
TABLE 402.4(29)
SEMIRIGID COPPER TUBING 		Gas Undiluted Propane
Inlet Pressure 2.0 psi
Pressure Drop 1.0 psi
Specific Gravity 1.50
TUBE SIZE (in.)
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 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
Length (ft) Capacity in Thousands of Btu per Hour
10 413 852 1,730 3,030 4,300 9,170 16,500 26,000 54,200
20 284 585 1,190 2,080 2,950 6,310 11,400 17,900 37,300
30 228 470 956 1,670 2,370 5,060 9,120 14,400 29,900
40 195 402 818 1,430 2,030 4,330 7,800 12,300 25,600
50 173 356 725 1,270 1,800 3,840 6,920 10,900 22,700
60 157 323 657 1,150 1,630 3,480 6,270 9,880 20,600
70 144 297 605 1,060 1,500 3,200 5,760 9,090 18,900
80 134 276 562 983 1,390 2,980 5,360 8,450 17,600
90 126 259 528 922 1,310 2,790 5,030 7,930 16,500
100 119 245 498 871 1,240 2,640 4,750 7,490 15,600
125 105 217 442 772 1,100 2,340 4,210 6,640 13,800
150 95 197 400 700 992 2,120 3,820 6,020 12,500
175 88 181 368 644 913 1,950 3,510 5,540 11,500
200 82 168 343 599 849 1,810 3,270 5,150 10,700
250 72 149 304 531 753 1,610 2,900 4,560 9,510
300 66 135 275 481 682 1,460 2,620 4,140 8,610
350 60 124 253 442 628 1,340 2,410 3,800 7,920
400 56 116 235 411 584 1,250 2,250 3,540 7,370
450 53 109 221 386 548 1,170 2,110 3,320 6,920
500 50 103 209 365 517 1,110 1,990 3,140 6,530
550 47 97 198 346 491 1,050 1,890 2,980 6,210
600 45 93 189 330 469 1,000 1,800 2,840 5,920
650 43 89 181 316 449 959 1,730 2,720 5,670
700 41 86 174 304 431 921 1,660 2,620 5,450
750 40 82 168 293 415 888 1,600 2,520 5,250
800 39 80 162 283 401 857 1,540 2,430 5,070
850 37 77 157 274 388 829 1,490 2,350 4,900
900 36 75 152 265 376 804 1,450 2,280 4,750
950 35 72 147 258 366 781 1,410 2,220 4,620
1,000 34 71 143 251 356 760 1,370 2,160 4,490
1,100 32 67 136 238 338 721 1,300 2,050 4,270
1,200 31 64 130 227 322 688 1,240 1,950 4,070
1,300 30 61 124 217 309 659 1,190 1,870 3,900
1,400 28 59 120 209 296 633 1,140 1,800 3,740
1,500 27 57 115 201 286 610 1,100 1,730 3,610
1,600 26 55 111 194 276 589 1,060 1,670 3,480
1,700 26 53 108 188 267 570 1,030 1,620 3,370
1,800 25 51 104 182 259 553 1,000 1,570 3,270
1,900 24 50 101 177 251 537 966 1,520 3,170
2,000 23 48 99 172 244 522 940 1,480 3,090
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

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.    All table entries have been rounded to three significant digits.
TABLE 402.4(30)
CORRUGATED STAINLESS STEEL TUBING (CSST) 		Gas Undiluted Propane
Inlet Pressure 11.0 in. w.c.
Pressure Drop 0.5 in. w.c.
Specific Gravity 1.50
TUBE SIZE (EHD)
Flow
Designation 		13 15 18 19 23 25 30 31 37 46 48 60 62
Length (ft) Capacity in Thousands of Btu per Hour
5 72 99 181 211 355 426 744 863 1,420 2,830 3,270 5,780 6,550
10 50 69 129 150 254 303 521 605 971 1,990 2,320 4,110 4,640
15 39 55 104 121 208 248 422 490 775 1,620 1,900 3,370 3,790
20 34 49 91 106 183 216 365 425 661 1,400 1,650 2,930 3,290
25 30 42 82 94 164 192 325 379 583 1,250 1,480 2,630 2,940
30 28 39 74 87 151 177 297 344 528 1,140 1,350 2,400 2,680
40 23 33 64 74 131 153 256 297 449 988 1,170 2,090 2,330
50 20 30 58 66 118 137 227 265 397 884 1,050 1,870 2,080
60 19 26 53 60 107 126 207 241 359 805 961 1,710 1,900
70 17 25 49 57 99 117 191 222 330 745 890 1,590 1,760
80 15 23 45 52 94 109 178 208 307 696 833 1,490 1,650
90 15 22 44 50 90 102 169 197 286 656 787 1,400 1,550
100 14 20 41 47 85 98 159 186 270 621 746 1,330 1,480
150 11 15 31 36 66 75 123 143 217 506 611 1,090 1,210
200 9 14 28 33 60 69 112 129 183 438 531 948 1,050
250 8 12 25 30 53 61 99 117 163 390 476 850 934
300 8 11 23 26 50 57 90 107 147 357 434 777 854
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

1.    Table includes losses for four 90-degree bends and two end fittings. Tubing runs with larger numbers of bends and/or fittings shall be increased by an equivalent length of tubing to the following equation: L = 1.3n where L is additional length (feet) of tubing and n is the number of additional fittings and/or bends.

2.    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.

3.    All table entries have been rounded to three significant digits.
TABLE 402.4(31)
CORRUGATED STAINLESS STEEL TUBING (CSST) 		Gas Undiluted Propane
Inlet Pressure 2.0 psi
Pressure Drop 1.0 psi
Specific Gravity 1.50
TUBE SIZE (EHD)
Flow
Designation 		13 15 18 19 23 25 30 31 37 46 48 60 62
Length (ft) Capacity in Thousands of Btu per Hour
10 426 558 927 1,110 1,740 2,170 4,100 4,720 7,130 15,200 16,800 29,400 34,200
25 262 347 591 701 1,120 1,380 2,560 2,950 4,560 9,550 10,700 18,800 21,700
30 238 316 540 640 1,030 1,270 2,330 2,690 4,180 8,710 9,790 17,200 19,800
40 203 271 469 554 896 1,100 2,010 2,320 3,630 7,530 8,500 14,900 17,200
50 181 243 420 496 806 986 1,790 2,070 3,260 6,730 7,610 13,400 15,400
75 147 196 344 406 663 809 1,460 1,690 2,680 5,480 6,230 11,000 12,600
80 140 189 333 393 643 768 1,410 1,630 2,590 5,300 6,040 10,600 12,200
100 124 169 298 350 578 703 1,260 1,450 2,330 4,740 5,410 9,530 10,900
150 101 137 245 287 477 575 1,020 1,180 1,910 3,860 4,430 7,810 8,890
200 86 118 213 248 415 501 880 1,020 1,660 3,340 3,840 6,780 7,710
250 77 105 191 222 373 448 785 910 1,490 2,980 3,440 6,080 6,900
300 69 96 173 203 343 411 716 829 1,360 2,720 3,150 5,560 6,300
400 60 82 151 175 298 355 616 716 1,160 2,350 2,730 4,830 5,460
500 53 72 135 158 268 319 550 638 1,030 2,100 2,450 4,330 4,880
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

1.    Table does not include effect of pressure drop across the line regulator. Where regulator loss exceeds 1/2 psi (based on 13 in. w.c. outlet pressure), DO NOT USE THIS TABLE. Consult with the regulator manufacturer for pressure drops and capacity factors. Pressure drops across a regulator may vary with flow rate.

2.    CAUTION: Capacities shown in the table might exceed maximum capacity for a selected regulator. Consult with the regulator or tubing manufacturer for guidance.

3.    Table includes losses for four 90-degree bends and two end fittings. Tubing runs with larger numbers of bends and/or fittings shall be increased by an equivalent length of tubing to the following equation: L = 1.3n where L is additional length (feet) of tubing and n is the number of additional fittings and/or bends.

4.    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.

5.    All table entries have been rounded to three significant digits.
TABLE 402.4(32)
CORRUGATED STAINLESS STEEL TUBING (CSST) 		Gas Undiluted Propane
Inlet Pressure 5.0 psi
Pressure Drop 3.5 psi
Specific Gravity 1.50
TUBE SIZE (EHD)
Flow
Designation 		13 15 18 19 23 25 30 31 37 46 48 60 62
Length (ft) Capacity in Thousands of Btu per Hour
10 826 1,070 1,710 2,060 3,150 4,000 7,830 8,950 13,100 28,600 31,200 54,400 63,800
25 509 664 1,090 1,310 2,040 2,550 4,860 5,600 8,400 18,000 19,900 34,700 40,400
30 461 603 999 1,190 1,870 2,340 4,430 5,100 7,680 16,400 18,200 31,700 36,900
40 396 520 867 1,030 1,630 2,030 3,820 4,400 6,680 14,200 15,800 27,600 32,000
50 352 463 777 926 1,460 1,820 3,410 3,930 5,990 12,700 14,100 24,700 28,600
75 284 376 637 757 1,210 1,490 2,770 3,190 4,920 10,300 11,600 20,300 23,400
80 275 363 618 731 1,170 1,450 2,680 3,090 4,770 9,990 11,200 19,600 22,700
100 243 324 553 656 1,050 1,300 2,390 2,760 4,280 8,930 10,000 17,600 20,300
150 196 262 453 535 866 1,060 1,940 2,240 3,510 7,270 8,210 14,400 16,600
200 169 226 393 464 755 923 1,680 1,930 3,050 6,290 7,130 12,500 14,400
250 150 202 352 415 679 828 1,490 1,730 2,740 5,620 6,390 11,200 12,900
300 136 183 322 379 622 757 1,360 1,570 2,510 5,120 5,840 10,300 11,700
400 117 158 279 328 542 657 1,170 1,360 2,180 4,430 5,070 8,920 10,200
500 104 140 251 294 488 589 1,050 1,210 1,950 3,960 4,540 8,000 9,110
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,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

1.    Table does not include effect of pressure drop across line regulator. Where regulator loss exceeds1 psi, DO NOT USE THIS TABLE. Consult with the regulator manufacturer for pressure drops and capacity factors. Pressure drop across regulator may vary with the flow rate.

2.    CAUTION: Capacities shown in the table might exceed maximum capacity of selected regulator. Consult with the tubing manufacturer for guidance.

3.    Table includes losses for four 90-degree bends and two end fittings. Tubing runs with larger numbers of bends and/or fittings shall be increased by an equivalent length of tubing to the following equation: L = 1.3n where L is additional length (feet) of tubing and n is the number of additional fittings and/or bends.

4.    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.

5.    All table entries have been rounded to three significant digits.