Dunkirk DCBF-125 - Page 42

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This chart is sourced from NFPA-54 2015 with the BTU ratings for the material, length, and diameter of gas pipe.
INTENDED USE: Pipe Sizing Between Natural Gas Meter, or Propane Single - or Second-Stage (Low-Pressure)
Regulator and Appliance.
Gas:
Inlet Pressure:
Pressure Drop:
Specific Gravity:
Nominal ID (inches):
Length (ft)
10
20
30
40
50
60
80
100
Gas:
Inlet Pressure:
Pressure Drop:
Specific Gravity:
Tube Size (inches): 1 1
Flow Designation (EHD): 23 25 30 31 23 25 30 31
Length (ft)
10 161 192 330 383 254 303 521 605
20 116 137 231 269 183 216 365 425
30 96 112 188 218 151 177 297 344
40 83 97 162 188 131 153 256 297
50 75 87 144 168 118 137 227 265
60 68 80 131 153 107 126 207 241
80 60 69 113 132 94 109 178 208
100 54 62 101 118 85 98 159 186
INTENDED USE: Pipe Sizing Between Natural Gas Meter, or Propane Single- or Second-Stage (Low-
Pressure) Regulator and Appliance.
Schedule 40 Metallic Pipe
Natural
Undiluted Propane
Less than 2 psi
11.0 in. w.c.
0.5 in. w.c.
0.5 in. w.c.
0.60
1.50
3/4
1
3/4
1
Capacity in Thousands of Btu per
Hour
Capacity in Thousands of Btu per
Hour
360
678
608
1,150
247
466
418
787
199
347
336
632
170
320
287
541
151
284
255
480
Corrugated Stainless Steel Tubing (CSST) w/ pressure drop of 0.5 inches w.c.
137
257
231
434
117
220
212
400
104
195
197
372
Natural
Undiluted Propane
Less than 2 psi
11.0 in. w.c.
0.5 in. w.c.
0.5 in. w.c.
0.60
1.50
3/4
3/4
Capacity in Thousands of Btu per
Hour
Capacity in Thousands of Btu per
Hour
7 - GAS SUPPLY PIPING
240013375 REV A, [07/01/2021]