Union (Pipe Socket Weld)
| Pipe Size | Dimensions in mm | Pressure RatingPSIG (Bar) | Dawsons-TechPart No. | |||
| P | D | Min. Opening | I | L | ||
| E | ||||||
| 1/4 | 22.4 | 9.1 | 9.9 | 26.9 | 8100 (550) | U-4PSW |
| 3/8 | 26.2 | 12.4 | 9.9 | 28.4 | 7100 (480) | U-6PSW |
| 1/2 | 31.8 | 15.7 | 9.9 | 28.4 | 6800 (460) | U-8PSW |
| 3/4 | 37.3 | 20.8 | 13.0 | 44.5 | 5800 (400) | U-12PSW |
| 1 | 47.2 | 26.7 | 13.0 | 44.5 | 6100 (415) | U-16PSW |