View basket “Oxygen Cylinder Transfiller System” has been added to your basket. O2 Union 4mm Y, one-touch€ 6,00 One-Touch (Push-to-Connect), 4mm, Y union. In stock (can be backordered) O2 Union 4mm Y, one-touch quantity Add to basket Categories: Adapters & parts, Oxygen Description Description O2 Union 4x4x4mm Y, one-touch. Related products Oxygen/Oxygen cylindersAluminium cylinder – 2 liter € 159,00 – € 179,00 Select options Oxygen/Adapters & partsMH-400 High Pressure Gauge € 29,00 Add to basket Oxygen/Adapters & partsO2 Union 4mm T, one-touch € 6,00 Add to basket