Especially with primary drainage using retention, or with gravel and green roofs, a higher planned water level occurs on the roof. But other project-specific requirements can also make emergency drainage with a higher weir necessary, such as a primary drainage system designed for a higher water level.

To keep the roof load during emergency drainage operation as low as possible, the emergency drainage system with higher weir must achieve a particularly high drainage capacity even with minimal overflow.

To keep the static load on the roof as low as possible in these situations, the new LORO-X DRAINJET emergency drainage with siphonic flow and height-variable weir under the hood offers high drainage capacity with particularly low overflow above the weir!