Technical
Light and heavy series: which thread belongs to which tube?
Compression fittings (24° cone) to DIN 2353 / ISO 8434-1. The series results from the tube outside diameter and the thread of the union nut.
| Tube outside Ø | Union nut thread |
|---|---|
| 6 mm (L6) | M12 × 1.5 |
| 8 mm (L8) | M14 × 1.5 |
| 10 mm (L10) | M16 × 1.5 |
| 12 mm (L12) | M18 × 1.5 |
| 15 mm (L15) | M22 × 1.5 |
| 18 mm (L18) | M26 × 1.5 |
| 22 mm (L22) | M30 × 2 |
| 28 mm (L28) | M36 × 2 |
| 35 mm (L35) | M45 × 2 |
| 42 mm (L42) | M52 × 2 |
| Tube outside Ø | Union nut thread |
|---|---|
| 6 mm (S6) | M14 × 1.5 |
| 8 mm (S8) | M16 × 1.5 |
| 10 mm (S10) | M18 × 1.5 |
| 12 mm (S12) | M20 × 1.5 |
| 14 mm (S14) | M22 × 1.5 |
| 16 mm (S16) | M24 × 1.5 |
| 20 mm (S20) | M30 × 2 |
| 25 mm (S25) | M36 × 2 |
| 30 mm (S30) | M42 × 2 |
| 38 mm (S38) | M52 × 2 |
Permissible pressures depend on series, size and material according to the fitting manufacturer's data sheet. Series LL (extra light) on request.