For the main drainage with retention and emergency drainage with a height-variable weir, LORO offers coordinated VARIOFIT flow aids that are calculated and manufactured with regard to the building specifications.

The height of the retention element of the emergency drainage is adapted to the retention water level of the main drainage system with retention depending on the building.

The listed flow aids fit onto the base bodies of the specified series of the parapet drainage (see adjacent PDF).

The installation takes place as a flow aid independently of the drain base body, so that the sealing and the installation of the flow aid can take place independently of one another.