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Steam Pipes - Max. Flow and Pressure Drop

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Steam Pipes - Max. Flow and Pressure Drop
MainsLaterals
Pressure(psi)

600 175 30 600 175 30
Pressure Drop
(psi per 100 ft pipe)
0.7 0.5 0.3 1 0.7 0.5
Nominal Pipe Size
(in)
Maximum Flow (103 lb/h)

3 6.2 2.7 0.9 7.5 3.6 1.2
4 12 5.7 2.5 15 7.5 3.2
6 33 16 6.6 40 21 8.5
8 63 32 14 76 42 18
10 108 58 25 130 76 32
12 158 87 39 190 115 50
14 217 117 54 260 155 70
16 300 166 78 360 220 100
18 227 101 300 130
20 132 170
  • 1 psi (lb/in2) = 6,894.8 Pa (N/m2)
  • 1 ft (foot) = 0.3048 m
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