Supporting Pressfit Pipes
Maximum span between supports of pressfit pipes
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Maximum support spacings for pressfit piping according
- ASME B31.1 Power Piping
- ASME B31.3 Process Piping
- ASME B31.9 Building Services Piping
are indicated in the table below:
| Support Spacing (feet) | |||||||
| NPS (inches) |
DN (mm) |
Water Service | Gas or Air Service | ||||
| B31.1 | B31.3 | B31.9 | B31.1 | B31.3 | B31.9 | ||
| 1/2 | 15 | 6 | 6 | 7 | 8 | 8 | 7 |
| 3/4 | 20 | 7 | 7 | 8 | 9 | 9 | 8 |
| 1 | 25 | 7 | 7 | 9 | 9 | 9 | 9 |
| 1 1/4 | 32 | 7 | 7 | 11 | 9 | 9 | 11 |
| 1 1/2 | 40 | 7 | 7 | 12 | 9 | 9 | 13 |
| 2 | 50 | 10 | 10 | 13 | 13 | 13 | 15 |
- 1 ft (foot) = 0.3048 m
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