ECR International UTICA BOILERS MACF-115, Installation, Operation And Maintenance Manual, Page: 44 / 139

40
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
240013503 REV A, [03/15/2022]