EN16436-06 rubber tube . This rubber hose is ideal for transporting propane, butane and other liquefied petroleum gas (LPG) mixtures in the vapor phase . It has an inner diameter of 6 mm or 8 mm , depending on the option chosen. Complies with the most demanding quality and safety standards of the European Union. The hose can be purchased alone or with the metal accessories necessary for its installation (hood, fittings, gaskets). A class 3 hose can be installed in place of a class 1 and 2, the reverse is not possible.