Install Manual

Appendix A. Fuel Line Selection3-2016
71A051X873 (Issue 5) Copyright © 2016 Cummins Inc.
1,600 NA NA NA 13 18 38 68 108 224
1,700 NA NA NA 12 17 37 66 104 217
1,800 NA NA NA 12 17 36 64 101 210
1,900 NA NA NA 11 16 35 62 98 204
2,000 NA NA NA 11 16 34 60 95 199
NA: A flow of less than 10 cfh.
Note: All table entries are rounded to 3 significant digits.
*Table capacities are based on Type K copper tubing inside diameter (shown), which has the
smallest inside diameter of the copper tubing products.
TABLE 21. PROPANE VAPOR SCHEDULE 40 METALLIC PIPE SIZING
Gas: Undiluted Propane
Inlet Pressure: 11.0 in. w.c.
Pressure Drop: 0.5 in. w.c.
Specific Gravity: 1.50
INTENDED USE: Pipe Sizing Between Single- or Second-Stage (Low-Pressure)
Regulator and Appliance
Pipe Size (in.)
Nominal
Inside:
1⁄2 3⁄4 1 11⁄4 11⁄2 2 21⁄2 3 4
Actual: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026
Length
(ft.)
Capacity in Thousands of BTU per Hour
10 291 608 1,150 2,350 3,520 6,790 10,800 19,100 39,000
20 200 418 787 1,620 2,420 4,660 7,430 13,100 26,800
30 160 336 632 1,300 1,940 3,750 5,970 10,600 21,500
40 137 287 541 1,110 1,660 3,210 5,110 9,030 18,400
50 122 255 480 985 1,480 2,840 4,530 8,000 16,300
60 110 231 434 892 1,340 2,570 4,100 7,250 14,800
80 101 212 400 821 1,230 2,370 3,770 6,670 13,600
100 94 197 372 763 1,140 2,200 3,510 6,210 12,700
125 89 185 349 716 1,070 2,070 3,290 5,820 11,900
150 84 175 330 677 1,010 1,950 3,110 5,500 11,200
175 74 155 292 600 899 1,730 2,760 4,880 9,950