Page 157 - 2018_IFGC

APPENDIX A

TABLE A.2.2
EQUIVALENT LENGTHS OF PIPE FITTINGS AND VALVES
SCREWED FITTINGS 1 90° WELDING ELBOWS AND SMOOTH BENDS 2
180°close
45°/Ell 90°/Ell Tee R/d = 1 R/d = 1 / 3 R/d = 2 R/d = 4 R/d = 6 R/d = 8
1
return bends
k factor = 0.42 0.90 2.00 1.80 0.48 0.36 0.27 0.21 0.27 0.36
L/d' ratio n = 1 4 30 67 60 16 12 9 7 9 12
4
Inside
Nominal
pipe size, diameter d, L = Equivalent Length In Feet of Schedule 40 (Standard-weight) Straight Pipe 6
inches,
inches 6
Schedule 40
1
/ 0.622 0.73 1.55 3.47 3.10 0.83 0.62 0.47 0.36 0.47 0.62
2
3
/ 0.824 0.96 2.06 4.60 4.12 1.10 0.82 0.62 0.48 0.62 0.82
4
1 1.049 1.22 2.62 5.82 5.24 1.40 1.05 0.79 0.61 0.79 1.05
1
1 / 1.380 1.61 3.45 7.66 6.90 1.84 1.38 1.03 0.81 1.03 1.38
4
1
1 / 2 1.610 1.88 4.02 8.95 8.04 2.14 1.61 1.21 0.94 1.21 1.61
2 2.067 2.41 5.17 11.5 10.3 2.76 2.07 1.55 1.21 1.55 2.07
1
2 / 2.469 2.88 6.16 13.7 12.3 3.29 2.47 1.85 1.44 1.85 2.47
2
3 3.068 3.58 7.67 17.1 15.3 4.09 3.07 2.30 1.79 2.30 3.07
4 4.026 4.70 10.1 22.4 20.2 5.37 4.03 3.02 2.35 3.02 4.03
5 5.047 5.88 12.6 28.0 25.2 6.72 5.05 3.78 2.94 3.78 5.05
6 6.065 7.07 15.2 33.8 30.4 8.09 6.07 4.55 3.54 4.55 6.07
8 7.981 9.31 20.0 44.6 40.0 10.6 7.98 5.98 4.65 5.98 7.98
10 10.02 11.7 25.0 55.7 50.0 13.3 10.0 7.51 5.85 7.51 10.0
12 11.94 13.9 29.8 66.3 59.6 15.9 11.9 8.95 6.96 8.95 11.9
14 13.13 15.3 32.8 73.0 65.6 17.5 13.1 9.85 7.65 9.85 13.1
16 15.00 17.5 37.5 83.5 75.0 20.0 15.0 11.2 8.75 11.2 15.0
18 16.88 19.7 42.1 93.8 84.2 22.5 16.9 12.7 9.85 12.7 16.9
20 18.81 22.0 47.0 105.0 94.0 25.1 18.8 14.1 11.0 14.1 18.8
24 22.63 26.4 56.6 126.0 113.0 30.2 22.6 17.0 13.2 17.0 22.6
(continued)

144 2018 INTERNATIONAL FUEL GAS CODE ®
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