DN 6,7 x 3, DIN EN ISO 5359, compliant to reach, gas specific colours according ISO 32 (CO2 according EN1089-3)
connection tube, colour according to ISO
| for air, colour black/white | Art. No 660028 |
| for O2, colour white | Art. No 660030 |
| for Vakuum, colour yellow | Art. No 660026 |
| for N2O, colour blue | Art. No 660022 |
| for CO2, colour grey | Art. No 660021 |