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CONNECT GAS PIPING
Table 7.1: Capacity of Gas Supply Pipe in Cubic Feet (Cubic Meters) Per Hour of Natural Gas for
0.3 inch (75 Pa) Drop.
Above ratings based on natural gas with specific gravity of 0.60 allowing pressure drop of 0.3 inches (75 Pa). No allowance
is needed for pipe fittings. Use the following multipliers on above capacities for specific gravity other than 0.60:
Specific Gravity 0.50 0.55 0.60 0.65 0.70
Multiply Capacity by: 1.10 1.04 1.00 .962 .926
Pipe Length 1-1/4" Pipe 1-1/2" Pipe 2" Pipe 2-1/2" Pipe 3" Pipe 4" Pipe 6" Pipe
Feet Meters Foot
3
Meter
3
Foot
3
Meter
3
Foot
3
Meter
3
Foot
3
Meter
3
Foot
3
Meter
3
Foot
3
Meter
3
Foot
3
Meter
3
10 3.0 1050 30 1,600 45 3,050 86 4,800 136 8,500 241 17,500 496 44,000 1246
20 6.1 730 21 1,100 31 2,100 59 3,300 93 5,900 167 12,000 340 31,000 878
30 9.1 590 17 890 25 1,650 47 2,700 76 4,700 133 9,700 275 25,000 708
40 12.2 500 14 760 22 1,450 41 2,300 65 4,100 116 8,300 235 22,000 623
50 15.2 440 12 670 19 1,270 36 2,000 57 3,600 102 7,400 210 20,000 566
60 18.3 400 11 610 17 1,150 33 1,850 52 3,250 92 6,800 193 18,000 510
70 21.3 350 10 560 16 1,050 30 1,700 48 3,000 85 6,200 176 17,000 481
90 27.4 320 9 490 14 930 26 1,500 42 2,600 74 5,400 153 15,000 425
100 30.5 305 9 460 13 870 25 1,400 40 2,500 71 5,100 144 14,000 396
150 45.7 250 7 380 11 710 20 1,130 32 2,000 57 4,100 116 11,500 326