Gassoflex ROOF DRAIN is a hose designed for installation in the rainwater drainage system of the floating roof tanks in storage terminals. Thanks to its high flexibility, the combination of different plastic materials in its layers and the internal and external stainless steel spiral mean that the hose can be completely submerged in all types of fuel, including MTBE and aromatics, allowing the angular movements required by floating suction systems and without the need for maintenance or lubrication required by conventional swivels. Gassó also manufactures the metal structures to eliminate any stress or fatigue throughout the life of the hose.