NTI GF 200 - Propane Gas Pipe Sizing Tables

Maximum Liqueed Propane Delivery Capacity
in Thousands of BTU/H (0.5 in WC Pressure Drop)
Pipe
Size
Length (including ttings)
10 ft
(3 m)
20 ft
(6 m)
30 ft
(9 m)
40 ft
(12 m)
50 ft
(15 m)
60 ft
(18 m)
80 ft
(24 m)
100 ft
(30 m)
125 ft
(38 m)
150 ft
(45 m)
175 ft
(53 m)
200 ft
(60 m)
250 ft
(76 m)
1
/
2
in 291 200 160 137 122 110 101 94 89 84 74 67 62
3
/
4
in 608 418 336 287 255 231 212 197 185 175 155 140 129
1 in 1,150 787 632 541 480 434 400 372 349 330 292 265 243
1
1
/
4
in 2,350 1,620 1,300 1,110 985 892 821 763 716 677 600 543 500
1
1
/
2
in 3,520 2,420 1,940 1,660 1,480 1,340 1,230 1,140 1,070 1,010 899 814 749
2 in 6,790 4,660 3,750 3,210 2,840 2,570 2,370 2,200 2,070 1,950 1,730 1,570 1,440
3.3.2 Measuring the Inlet Gas Pressure
For detailed instrustions to measure the inlet gas pressure, see relevant section in the water heater
installation manual (supplied).
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