Page 68 - 2018_IFGC

GAS PIPING INSTALLATIONS

TABLE 402.4(23) TABLE 402.4(24)
POLYETHYLENE PLASTIC TUBING POLYETHYLENE PLASTIC TUBING
Gas Natural Gas Natural
Inlet Pressure Less than 2.0 psi Inlet Pressure Less than 2.0 psi
Pressure Drop 0.3 in. w.c. Pressure Drop 0.5 in. w.c.
Specific Gravity 0.60 Specific Gravity 0.60

PLASTIC TUBING SIZE (CTS) (inch) PLASTIC TUBING SIZE (CTS) (inch)
Nominal OD 1 / 2 3 / 4 Nominal OD 1 / 2 3 / 4
Designation SDR 7 SDR 11 Designation SDR 7 SDR 11
Actual ID 0.445 0.927 Actual ID 0.445 0.927
Length (ft) Capacity in Cubic Feet of Gas per Hour Length (ft) Capacity in Cubic Feet of Gas per Hour
10 54 372 10 72 490
20 37 256 20 49 337
30 30 205 30 39 271
40 26 176 40 34 232
50 23 156 50 30 205
60 21 141 60 27 186
70 19 130 70 25 171
80 18 121 80 23 159
90 17 113 90 22 149
100 16 107 100 21 141
125 14 95 125 18 125
150 13 86 150 17 113
175 12 79 175 15 104
200 11 74 200 14 97
225 10 69 225 13 91
250 NA 65 250 12 86
275 NA 62 275 11 82
300 NA 59 300 11 78
350 NA 54 350 10 72
400 NA 51 400 NA 67
450 NA 47 450 NA 63
500 NA 45 500 NA 59
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm,
1 pound per square inch = 6.895 kPa, 1 pound per square inch = 6.895 kPa,
1-inch water column = 0.2488 kPa, 1-inch water column = 0.2488 kPa,
1 British thermal unit per hour = 0.2931 W, 1 British thermal unit per hour = 0.2931 W,
3
3
1 cubic foot per hour = 0.0283 m /h, 1 degree = 0.01745 rad. 1 cubic foot per hour = 0.0283 m /h, 1 degree = 0.01745 rad.
Notes: Notes:
1. NA means a flow of less than 10 cfh. 1. NA means a flow of less than 10 cfh.
2. Table entries have been rounded to three significant digits. 2. Table entries have been rounded to three significant digits.

2018 INTERNATIONAL FUEL GAS CODE ® 55
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