U bends with bottom outlet are typically used for merging two different flow streams in pipeline & as provision of a vented overflow on columns and as liquid seal with drain.
| DN | L | L1 | Reference | |
|---|---|---|---|---|
| 25 | 250 | 150 | NSPUO 1 |  |
| 40 | 275 | 175 | NSPUO 1.5 | |
| 50 | 275 | 175 | NSPUO 2 | |
| 40/25 | 275 | 175 | NSPUO 1.5/1 | |
| 50/25 | 275 | 175 | NSPUO 2/1 | |
| 80/25 | 350 | 225 | NSPUO 3/1 |
