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EmailMaximum Capacity* for Copper Tube in a Low Pressure System
Table 3
May 31, 2000
Maximum Capacity* for Copper Tube in a Low Pressure System
of Less than 14 inches wc and Pressure Drop of 0.5 inches wc, CFH.**
| Length of Tube, feet |
Outside Diameter of Tube, Inches | ||||||
| 3/8 | 1/2 | 5/8 | 3/4 | 7/8 | 1 1/8 | 1 3/8 | |
| 10 | 24 | 50 | 101 | 176 | 250 | 535 | 963 |
| 20 | 17 | 34 | 69 | 121 | 172 | 368 | 662 |
| 30 | 13 | 27 | 56 | 97 | 138 | 295 | 531 |
| 40 | 11 | 23 | 48 | 83 | 118 | 253 | 455 |
| 50 | 10 | 21 | 42 | 74 | 105 | 224 | 403 |
| 60 | 9.1 | 19 | 38 | 67 | 95 | 203 | 365 |
| 70 | 8.4 | 17 | 35 | 62 | 87 | 187 | 336 |
| 80 | 7.8 | 16 | 33 | 57 | 81 | 174 | 313 |
| 90 | 7.3 | 15 | 31 | 54 | 76 | 163 | 293 |
| 100 | 6.9 | 14 | 29 | 51 | 72 | 154 | 277 |
| 125 | 6.1 | 13 | 26 | 45 | 64 | 136 | 245 |
| 150 | 5.6 | 11 | 23 | 41 | 58 | 124 | 222 |
| 175 | 5.1 | 11 | 21 | 38 | 53 | 114 | 205 |
| 200 | 4.8 | 10 | 20 | 35 | 50 | 106 | 190 |
| 250 | 4.2 | 8.7 | 18 | 31 | 44 | 94 | 169 |
Note:
*Includes 20% factor for fittings. **See Table 7.
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