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CONNECT FUEL PIPING
Table 7.1: Capacity of Gas Supply Pipe in Cubic Feet Per Hour of Natural Gas for Pressure Drop of
0.3 inch Water Column.
Pipe Length
1-1/4"
(Feet)
Pipe
10
1050
20
730
30
590
40
500
50
440
60
400
70
350
90
320
100
305
150
250
Above ratings based on natural gas with specific gravity of 0.60 allowing pressure drop of 0.3 inches water column. No allowance is needed for
pipe fittings. Use the following multipliers on above capacities for specific gravity other than 0.60:
Specific Gravity
Multiply Capacity by:
30
1-1/2"
2"
Pipe
Pipe
1600
3050
1100
2100
890
1650
760
1450
670
1270
610
1150
560
1050
490
930
460
870
380
710
0.50
0.55
1.10
1.04
2-1/2"
3"
Pipe
Pipe
4800
8500
3300
5900
2700
4700
2300
4100
2000
3600
1850
3250
1700
3000
1500
2600
1400
2500
1130
2000
0.60
1.00
4"
6"
Pipe
Pipe
17500
44000
12000
31000
9700
25000
8300
22000
7400
20000
6800
18000
6200
17000
5400
15000
5100
14000
4100
11500
0.65
0.70
0.962
0.926
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