Generac Power Systems Stationary Emergency Generator Installation Manual page 13

TABLE 1
Specific
Multiplier
Gravity(1)
0.5 1.1
0.55 1.04
0.6 1
0.65 0.962
0.7 0.926
0.8 0.867
0.9 0.817
Note 1: Relative to air at 30 inches Hg, 60°F
TABLE 2
Length of Pipe
(In Feet)
1/2"
15 76
30 52
45 43
60 38
75
90
105
120
150
180
210
240
270
300
450
600
Specific
Density lb/ft
3
Gravity(1)
0.0383 1
0.0421 1.2
0.0459 1.4
0.0497 1.5
0.0536 1.7
0.0612 1.9
0.0689 2.1
3/4" 1" 1-1/4"
172 345 750
120 241 535
99 199 435
86 173 380
77 155 345
70 141 310
65 131 285
120 270
109 242
100 225
92 205
190
178
170
140
119
Multiplier Density lb/ft
0.775
0.707
0.655
0.633
0.594
0.565
0.535
Iron Pipe Size (IPS Inches)
1-1/2" 2" 2-1/2"
1220 2480 3850
850 1780 2750
700 1475 2300
610 1290 2000
545 1120 1750
490 1000 1560
450 920 1430
420 860 1340
380 780 1220
350 720 1120
320 660 1030
300 620 970
285 580 910
270 545 860
226 450 710
192 390 600
General Information
Pressure Drop
3
0.0765 0.1
0.0918 0.2
0.1072 0.3
0.1148 0.5
0.1301 1
0.1454 2
0.1607 5
3" 4"
6500 13880
4700 9700
3900 7900
3450 6800
3000 6000
2700 5500
2450 5100
2300 4800
2090 4350
1950 4000
1780 3700
1680 3490
1580 3250
1490 3000
1230 2500
1030 2130
Multiplier
0.577
0.815
1
1.29
1.83
2.58
4.08
6" 8"
38700 79000
27370 55850
23350 45600
19330 39500
17310 35300
15800 32250
14620 29850
13680 27920
12240 25000
11160 22800
10330 21100
9600 19740
9000 18610
8500 17660
7000 14420
6000 12480
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