Standard nominal sizes in bold
| DN | 31 |
| Size | 20 |
| Inch | 1.1/4 |
| Thread + standard | Threaded stem with bore form W (24 °) according to DIN 3861, heavy series |
| Connection thread A | M52x2 |
| Pipe Ø R [mm] | 38 |
| X [mm] | 45,0 |
| L1 [mm] | 123,0 |
| SW1 [mm] | 55 |
| Connection name Indunorm | ME |