Chapter 1 General Requirements

Chapter 2 Definitions

Chapter 3 General Regulations

Chapter 4 Gas Piping Installations

Chapter 5 Chimneys and Vents

Chapter 6 Specific Appliances

Chapter 7 Gaseous Hydrogen Systems

Chapter 8 Referenced Standards

Appendix A Sizing and Capacities of Gas Piping

Appendix B Sizing of Venting Systems Serving Appliances Equipped With Draft Hoods

Appendix C Reserved

Appendix D Recommended Procedure for Safety Inspection of an Existing Appliance Installation

Appendix E Structural Safety

This chapter shall govern the design, installation, modification and maintenance of piping systems. The applicability of this code to piping systems extends from the point of delivery to the connections with the equipment and includes the design, materials, components, fabrication, assembly, installation, testing, inspection, operation and maintenance of such piping systems.
Utility service piping located within buildings shall be installed in accordance with the structural safety and fire protection provisions of the Building Code of New York State.
The storage system for liquefied petroleum gas shall be designed and installed in accordance with the Fire Code of New York State and NFPA 58.
In modifying or adding to existing piping systems, sizes shall be maintained in accordance with this chapter.
Where an additional appliance is to be served, the existing piping shall be checked to determine if it has adequate capacity for all appliances served. If inadequate, the existing system shall be enlarged as required or separate piping of adequate capacity shall be provided.
For other than steel pipe, exposed piping shall be identified by a yellow label marked "Gas" in black letters. The marking shall be spaced at intervals not exceeding 5 feet (1524 mm). The marking shall not be required on pipe located in the same room as the equipment served.
Where two or more meters are installed on the same premises but supply separate consumers, the piping systems shall not be interconnected on the outlet side of the meters.
Piping from multiple meter installations shall be marked with an approved permanent identification by the installer so that the piping system supplied by each meter is readily identifiable.
All pipe utilized for the installation, extension and alteration of any piping system shall be sized to supply the full number of outlets for the intended purpose and shall be sized in accordance with Section 402.
Piping systems shall be of such size and so installed as to provide a supply of gas sufficient to meet the maximum demand without undue loss of pressure between the point of delivery and the appliance.
The volume of gas to be provided, in cubic feet per hour, shall be determined directly from the manufacturer’s input ratings of the appliances served. Where an input rating is not indicated, the gas supplier, appliance manufacturer or a qualified agency shall be contacted, or the rating from Table 402.2 shall be used for estimating the volume of gas to be supplied.

The total connected hourly load shall be used as the basis for pipe sizing, assuming that all appliances could be operating at full capacity simultaneously. Where a diversity of load can be established, pipe sizing shall be permitted to be based on such loads.

TABLE 402.2 APPROXIMATE GAS INPUT FOR TYPICAL APPLIANCES


APPLIANCE INPUT BTU/H
(Approx.)
Space Heating Units
Hydronic boiler
Single family 100,000
Multifamily, per unit 60,000
Warm-air furnace
Single family 100,000
Multifamily, per unit 60,000
Space and Water Heating Units
Hydronic boiler
Single family 120,000
Multifamily, per unit 75,000
Water Heating Appliances
Water heater, automatic instantaneous
Capacity at 2 gal./minute 142,800
Capacity at 4 gal./minute 285,000
Capacity at 6 gal./minute 428,400
Water heater, automatic storage, 30- to 40-gal. tank 35,000
Water heater, automatic storage, 50-gal. tank 50,000
Water heater, domestic, circulating or side-arm 35,000
Cooking Appliances
Built-in oven or broiler unit, domestic 25,000
Built-in top unit, domestic 40,000
Range, free-standing, domestic 65,000
Other Appliances
Barbecue 40,000
Clothes dryer, Type 1 (domestic) 35,000
Gas fireplace, direct-vent 40,000
Gas light 2,500
Gas log 80,000
Refrigerator 3,000


For SI: 1 British thermal unit per hour = 0.293 W, 1 gallon = 3.785 L,

1 gallon per minute = 3.785 L/m.
Gas piping shall be sized in accordance with one of the following:

1. Pipe sizing tables or sizing equations in accordance with Section 402.4.
2. The sizing tables included in a listed piping system’s manufacturer’s installation instructions.
3. Other approved engineering methods.
Where Tables 402.4(1) through 402.4(35) are used to size piping or tubing, the pipe length shall be determined in accordance with Section 402.4.1, 402.4.2 or 402.4.3.

Where Equations 4-1 and 4-2 are used to size piping or tubing, the pipe or tubing shall have smooth inside walls and the pipe length shall be determined in accordance with Section 402.4.1, 402.4.2 or 402.4.3.

1. Low-pressure gas equation [Less than 1.5 pounds per square inch (psi) (10.3 kPa)]:



(Equation 4-1)
2. High-pressure gas equation [1.5 psi (10.3 kPa) and above]:



(Equation 4-2)

where:

D
= Inside diameter of pipe, inches (mm).

Q
= Input rate appliance(s), cubic feet per hour at 60°F (16°C) and 30-inch mercury column

P
1 = Upstream pressure, psia (P1 + 14.7)

P
2 = Downstream pressure, psia (P2 + 14.7)

L
= Equivalent length of pipe, feet

DH = Pressure drop, inch water column (27.7 inch water column = 1 psi)

TABLE 402.4
Cr AND Y VALUES FOR NATURAL GAS AND UNDILUTED PROPANE AT STANDARD CONDITIONS

GAS EQUATION FACTORS
Cr Y
Natural gas 0.6094 0.9992
Undiluted propane 1.2462 0.9910


For SI: 1 cubic foot = 0.028 m3, 1 foot = 305 mm, 1-inch water column = 0.249 kPa, 1 pound per square inch = 6.895 kPa, 1 British thermal unit per hour = 0.293 W


TABLE 402.4(1)
SCHEDULE 40 METALLIC PIPE

Gas Natural
Inlet Pressure Less than 2 psi
Pressure Drop 0.3 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 (ft) Capacity in Cubic Feet of Gas Per Hour
10 131 273 514 1,060 1,580 3,050 4,860 8,580 17,500 31,700 51,300 105,000 191,000 303,000
20 90 188 353 726 1,090 2,090 3,340 5,900 12,000 21,800 35,300 72,400 132,000 208,000
30 72 151 284 583 873 1,680 2,680 4,740 9,660 17,500 28,300 58,200 106,000 167,000
40 62 129 243 499 747 1,440 2,290 4,050 8,270 15,000 24,200 49,800 90,400 143,000
50 55 114 215 442 662 1,280 2,030 3,590 7,330 13,300 21,500 44,100 80,100 127,000
60 50 104 195 400 600 1,160 1,840 3,260 6,640 12,000 19,500 40,000 72,600 115,000
70 46 95 179 368 552 1,060 1,690 3,000 6,110 11,100 17,900 36,800 66,800 106,000
80 42 89 167 343 514 989 1,580 2,790 5,680 10,300 16,700 34,200 62,100 98,400
90 40 83 157 322 482 928 1,480 2,610 5,330 9,650 15,600 32,100 58,300 92,300
100 38 79 148 304 455 877 1,400 2,470 5,040 9,110 14,800 30,300 55,100 87,200
125 33 70 131 269 403 777 1,240 2,190 4,460 8,080 13,100 26,900 48,800 77,300
150 30 63 119 244 366 704 1,120 1,980 4,050 7,320 11,900 24,300 44,200 70,000
175 28 58 109 224 336 648 1,030 1,820 3,720 6,730 10,900 22,400 40,700 64,400
200 26 54 102 209 313 602 960 1,700 3,460 6,260 10,100 20,800 37,900 59,900
250 23 48 90 185 277 534 851 1,500 3,070 5,550 8,990 18,500 33,500 53,100
300 21 43 82 168 251 484 771 1,360 2,780 5,030 8,150 16,700 30,400 48,100
350 19 40 75 154 231 445 709 1,250 2,560 4,630 7,490 15,400 28,000 44,300
400 18 37 70 143 215 414 660 1,170 2,380 4,310 6,970 14,300 26,000 41,200
450 17 35 66 135 202 389 619 1,090 2,230 4,040 6,540 13,400 24,400 38,600
500 16 33 62 127 191 367 585 1,030 2,110 3,820 6,180 12,700 23,100 36,500
550 15 31 59 121 181 349 556 982 2,000 3,620 5,870 12,100 21,900 34,700
600 14 30 56 115 173 333 530 937 1,910 3,460 5,600 11,500 20,900 33,100
650 14 29 54 110 165 318 508 897 1,830 3,310 5,360 11,000 20,000 31,700
700 13 27 52 106 159 306 488 862 1,760 3,180 5,150 10,600 19,200 30,400
750 13 26 50 102 153 295 470 830 1,690 3,060 4,960 10,200 18,500 29,300
800 12 26 48 99 148 285 454 802 1,640 2,960 4,790 9,840 17,900 28,300
850 12 25 46 95 143 275 439 776 1,580 2,860 4,640 9,530 17,300 27,400
900 11 24 45 93 139 267 426 752 1,530 2,780 4,500 9,240 16,800 26,600
950 11 23 44 90 135 259 413 731 1,490 2,700 4,370 8,970 16,300 25,800
1,000 11 23 43 87 131 252 402 711 1,450 2,620 4,250 8,720 15,800 25,100
1,100 10 21 40 83 124 240 382 675 1,380 2,490 4,030 8,290 15,100 23,800
1,200 NA 20 39 79 119 229 364 644 1,310 2,380 3,850 7,910 14,400 22,700
1,300 NA 20 37 76 114 219 349 617 1,260 2,280 3,680 7,570 13,700 21,800
1,400 NA 19 35 73 109 210 335 592 1,210 2,190 3,540 7,270 13,200 20,900
1,500 NA 18 34 70 105 203 323 571 1,160 2,110 3,410 7,010 12,700 20,100
1,600 NA 18 33 68 102 196 312 551 1,120 2,030 3,290 6,770 12,300 19,500
1,700 NA 17 32 66 98 189 302 533 1,090 1,970 3,190 6,550 11,900 18,800
1,800 NA 16 31 64 95 184 293 517 1,050 1,910 3,090 6,350 11,500 18,300
1,900 NA 16 30 62 93 178 284 502 1,020 1,850 3,000 6,170 11,200 17,700
2,000 NA 16 29 60 90 173 276 488 1,000 1,800 2,920 6,000 10,900 17,200


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(2) SCHEDULE 40 METALLIC PIPE


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 (ft) Capacity in Cubic Feet of Gas Per Hour
10 172 360 678 1,390 2,090 4,020 6,400 11,300 23,100 41,800 67,600 139,000 252,000 399,000
20 118 247 466 957 1,430 2,760 4,400 7,780 15,900 28,700 46,500 95,500 173,000 275,000
30 95 199 374 768 1,150 2,220 3,530 6,250 12,700 23,000 37,300 76,700 139,000 220,000
40 81 170 320 657 985 1,900 3,020 5,350 10,900 19,700 31,900 65,600 119,000 189,000
50 72 151 284 583 873 1,680 2,680 4,740 9,660 17,500 28,300 58,200 106,000 167,000
60 65 137 257 528 791 1,520 2,430 4,290 8,760 15,800 25,600 52,700 95,700 152,000
70 60 126 237 486 728 1,400 2,230 3,950 8,050 14,600 23,600 48,500 88,100 139,000
80 56 117 220 452 677 1,300 2,080 3,670 7,490 13,600 22,000 45,100 81,900 130,000
90 52 110 207 424 635 1,220 1,950 3,450 7,030 12,700 20,600 42,300 76,900 122,000
100 50 104 195 400 600 1,160 1,840 3,260 6,640 12,000 19,500 40,000 72,600 115,000
125 44 92 173 355 532 1,020 1,630 2,890 5,890 10,600 17,200 35,400 64,300 102,000
150 40 83 157 322 482 928 1,480 2,610 5,330 9,650 15,600 32,100 58,300 92,300
175 37 77 144 296 443 854 1,360 2,410 4,910 8,880 14,400 29,500 53,600 84,900
200 34 71 134 275 412 794 1,270 2,240 4,560 8,260 13,400 27,500 49,900 79,000
250 30 63 119 244 366 704 1,120 1,980 4,050 7,320 11,900 24,300 44,200 70,000
300 27 57 108 221 331 638 1,020 1,800 3,670 6,630 10,700 22,100 40,100 63,400
350 25 53 99 203 305 587 935 1,650 3,370 6,100 9,880 20,300 36,900 58,400
400 23 49 92 189 283 546 870 1,540 3,140 5,680 9,190 18,900 34,300 54,300
450 22 46 86 177 266 512 816 1,440 2,940 5,330 8,620 17,700 32,200 50,900
500 21 43 82 168 251 484 771 1,360 2,780 5,030 8,150 16,700 30,400 48,100
550 20 41 78 159 239 459 732 1,290 2,640 4,780 7,740 15,900 28,900 45,700
600 19 39 74 152 228 438 699 1,240 2,520 4,560 7,380 15,200 27,500 43,600
650 18 38 71 145 218 420 669 1,180 2,410 4,360 7,070 14,500 26,400 41,800
700 17 36 68 140 209 403 643 1,140 2,320 4,190 6,790 14,000 25,300 40,100
750 17 35 66 135 202 389 619 1,090 2,230 4,040 6,540 13,400 24,400 38,600
800 16 34 63 130 195 375 598 1,060 2,160 3,900 6,320 13,000 23,600 37,300
850 16 33 61 126 189 363 579 1,020 2,090 3,780 6,110 12,600 22,800 36,100
900 15 32 59 122 183 352 561 992 2,020 3,660 5,930 12,200 22,100 35,000
950 15 31 58 118 178 342 545 963 1,960 3,550 5,760 11,800 21,500 34,000
1,000 14 30 56 115 173 333 530 937 1,910 3,460 5,600 11,500 20,900 33,100
1,100 14 28 53 109 164 316 503 890 1,810 3,280 5,320 10,900 19,800 31,400
1,200 13 27 51 104 156 301 480 849 1,730 3,130 5,070 10,400 18,900 30,000
1,300 12 26 49 100 150 289 460 813 1,660 3,000 4,860 9,980 18,100 28,700
1,400 12 25 47 96 144 277 442 781 1,590 2,880 4,670 9,590 17,400 27,600
1,500 11 24 45 93 139 267 426 752 1,530 2,780 4,500 9,240 16,800 26,600
1,600 11 23 44 89 134 258 411 727 1,480 2,680 4,340 8,920 16,200 25,600
1,700 11 22 42 86 130 250 398 703 1,430 2,590 4,200 8,630 15,700 24,800
1,800 10 22 41 84 126 242 386 682 1,390 2,520 4,070 8,370 15,200 24,100
1,900 10 21 40 81 122 235 375 662 1,350 2,440 3,960 8,130 14,800 23,400
2,000 NA 20 39 79 119 229 364 644 1,310 2,380 3,850 7,910 14,400 22,700


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(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
1,200 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
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
30 135 279 568 993 1,410 3,010 5,420 8,550 17,800
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./td>

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