15. Examples
PNEG-308 Purafire 55
Propane (1.53 SP. G.R.): @ 10 PSI Based on 1 PSI Pressure Drop (1000’s BTU/Hr)
Source: Natural Fuel Gas Code 5
th
Edition 8/28/92
Pipe
Length (ft.)
Copper Tubing Size (O.D.) Nominal Pipe Size (SCH.40)
3/8" 1/2" 5/8" 3/4" 1/2" 3/4" 1" 1-1/4" 1-1/2" 2"
10 558 1387 2360 3993 3339 6982 13153 27004 40461 77924
20 383 870 1622 2475 2295 4799 9040 18560 27809 53556
30 309 700 1303 2205 1843 3854 7259 14904 22331 43008
40 265 599 1115 1887 1577 3298 6213 12756 19113 36809
50 235 531 988 1672 1398 2923 5507 11306 16939 32623
60 213 481 896 1515 1267 2649 4989 10244 15348 29559
70 196 443 824 1394 1165 2437 4590 9424 14120 27194
80 182 412 767 1297 1084 2267 4270 8767 13136 25299
90 171 386 719 1217 1017 2127 4007 8226 12325 23737
100 161 365 679 1149 961 2009 3785 7770 11642 22422
125 142 323 601 1018 852 1780 3354 6887 10318 19871
150 130 293 546 923 772 1613 3039 6240 9349 18005
175 118 269 502 843 710 1484 2796 5741 8601 16564
200 111 251 467 790 660 1381 2601 5340 8002 15410
225 104 235 438 740 619 1296 2441 5011 7508 14459
250 90 222 414 700 585 1224 2305 4377 7092 13658
275 89 211 393 664 556 1162 2190 4495 6735 12971
300 89 201 375 634 530 1109 2089 4289 6246 12375
350 82 185 345 584 488 1020 1922 3945 5911 11385
400 76 172 321 543 454 949 1788 3670 5499 10591
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