Page 61 - 2018_IFGC
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GAS PIPING INSTALLATIONS
10,100 7,160 5,850 5,070 4,540 4,140 3,590 3,210 2,930 2,720 2,540 2,400 2,280 1,860 1,610 1,440 1,320
62
Natural Less than 2 psi 3.0 in. w.c. 0.60 60 8,800 6,270 5,140 4,460 4,000 3,660 3,180 2,850 2,600 2,420 2,260 2,140 2,030 1,660 1,440 1,290 1,180
Gas 48 5,010 3,560 2,910 2,530 2,270 2,070 1,800 1,610 1,470 1,360 1,280 1,200 1,140 936 812 728 665
Inlet Pressure Pressure Drop Specific Gravity 46 4,430 3,200 2,540 2,200 1,960 1,790 1,550 1,380 1,260 1,170 1,090 1,030 974 793 686 613 559
39 2,423 1,740 1,433 1,249 1,123 1,029 897 806 739 686 644 609 579 477 415 373 342
37 2,140 1,530 1,250 1,090 978 895 778 698 639 593 555 524 498 409 355 319 234
31 Capacity in Cubic Feet of Gas Per Hour 1,370 958 778 672 599 546 471 421 383 355 331 311 295 240 207 184 168
INTENDED USE: INITIAL SUPPLY PRESSURE OF 8.0-INCH W.C. OR GREATER TUBE SIZE (EHD) 30 1,180 828 673 580 518 471 407 363 330 306 285 268 254 206 178 159 144 Table includes losses for four 90-degree bends and two end fittings. Tubing runs with larger numbers of bends or fittings shall be increased by an equivalent length of tubing to the following equation: EHD—Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficien
25 649 462 379 329 295 270 234 210 192 178 167 157 149 122 106 95 87
TABLE 402.4(16) CORRUGATED STAINLESS STEEL TUBING (CSST) 23 19 529 327 380 231 313 189 273 164 245 147 225 134 196 116 176 104 161 95 150 88 141 82 133 77 126 73 104 60 91 52 82 46 75 42 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,
18 277 197 161 140 125 115 100 89 82 76 71 67 63 52 45 40 37 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m 3 /h, 1 degree = 0.01745 rad. L = 1.3n where L is additional length (feet) of tubing and n is the number of additional fittings or bends.
15 160 112 90 78 69 63 54 48 44 41 38 36 34 27 23 21 19
13 120 83 67 57 51 46 39 35 32 29 27 26 24 19 17 15 13 Table entries have been rounded to three significant digits.
Flow Designation Length (ft) 5 10 15 20 25 30 40 50 60 70 80 90 100 150 200 250 300
For SI: Notes: 1. 2. 3.
48 2018 INTERNATIONAL FUEL GAS CODE ®
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