Seal: EPDM (water), HNBR (gas)
Max pressure: up to 16 bar
Temperature: up to 110–120 °C
| Main × branch diameter (D1 × D2 × D1), mm | Application/Type |
| 12 × 12 × 12 | Small piping, rarely used |
| 15 × 15 × 15 | Standard for apartment piping |
| 18 × 18 × 18 | Water supply |
| 22 × 22 × 22 | Popular in heating systems |
| 28 × 28 × 28 | Private houses and boiler rooms |
| 35 × 35 × 35 | Commercial and apartment buildings |
| 42 × 42 × 42 | Industrial installations |