Tightening torque
ød | DN | Nm |
20 mm | 15 | 10 |
25mm | 20 | 10 |
32mm | 25 | 15 |
40mm | 32 | 20 |
50mm | 40 | 25 |
63mm | 50 | 35 |
75mm | 65 | 40 |
90mm | 80 | 40 |
110mm | 100 | 45 |
125mm | 100 | 45 |
160mm | 150 | 60 |
200mm* | 200 | 75 |
250mm* | 250 | 75 |
315mm* | 300 | 90 |
400mm* | 400 | 100 |
450mm* | 500 | 190 |
500mm* | 500 | 190 |
560mm* | 600 | 220 |
630mm* | 600 | 220 |
* Maximum operating pressure of 6bar in combination with flat seals
Tightening sequence
Number of bolts | Tightening sequence |
4 | 1 - 3 - 2 - 4 |
8 | 1 - 5 - 3 - 7 - 2 - 6 - 4 - 8 |
12 | 1 - 7 - 4 - 10 - 2 - 8 - 5 - 11 - 3 - 9 - 6 - 12 |
16 | 1 - 9 - 5 - 13 - 3 - 11 - 10 - 15 - 2 - 7 - 6 - 14 - 4 - 12 - 8 - 16 |
20 | 1 - 11 - 6 - 16 - 3 - 13 - 8 - 18 - 5 - 15 - 10 - 20 - 4 - 14 - 9 - 19 - 7 - 17 - 2 - 12 |