The ongoing evolution of trailing hopper dredgers and the requirements for less maintenance, longer service life and lower production costs for customers have resulted in a new innovation: The RockTrail®slurry hose.
The patented RockTrail® concept is based on minimizing the polymer surface inside a slurry hose without compromising the bending properties. This has been achieved by using white iron cast rings inside the layer of the slurry hose. The cross sectional shape of the cast rings in combination with the polymer properties offer an exceptionally flexible hose with superior wear characteristics. This type of slurry hose is suitable to be used in ripping jobs, coral and caprock and other very abrasive and sharp edged solids like shell and blasted or pre-cut rock. The lifetime of the RockTrail® hoses exceeds the standard suction hose by 20 times and the current caprock hoses by 5 times. RockTrail® suction and discharge hoses can be fitted in the standard trunnion and gimbal joints and can also be used as inboard suction and discharge expansion joints in the pump room or on the deck pipes.