Main-Emergency-Combination Retention Roof Drainage

LORO-X Series 88 VARIOFIT main-emergency combination retention roof drainage for main drainage with rainwater retention on the roof and pipe-in-pipe emergency drainage to the outside.

The height of the retention pipe of the main drainage simultaneously forms the height of the damming element of the emergency drainage. Due to the height-variable arrangement of the hood, the distance between the hood and the height-variable weir remains constant, so that the discharge capacity remains the same at every height and only the discharge curve shifts in height.

(1) With the model with emergency drainage as a spout, the emergency drainage can drain small areas with free-surface flow to the outside.
(2) For larger areas, the emergency drainage with siphonic flow and mini hood offers a significantly stronger discharge via the internal DN50 downpipe.
(3) If only a low maximum water level on the roof is permissible, the model with standard hood is used.

The LORO-X main-emergency combination retention roof drainage with emergency drainage as a spout is optimally suited for smaller roof areas.

The emergency drainage achieves a discharge of 2.2 l/s at 40mm overflow above the retention pipe height, which corresponds to approx. 75m2 roof area depending on the rainfall intensity.

The outlet is via a spout with the visually appealing pipe-in-pipe branch.

The LORO-X main-emergency combination retention roof drainage with emergency drainage as siphonic flow with DRAINJET mini hood is optimally suited for larger roof areas.

The emergency drainage achieves a discharge of 7.1 l/s at 50mm overflow above the retention pipe height, which corresponds to approx. 240m2 roof area depending on the rainfall intensity.

The outlet is via a pipe-in-pipe downpipe with only one visible downpipe. For increased backflow protection from the underground pipe, the pipe-in-pipe rainwater standpipe with HSÜ can be used.

The LORO-X main-emergency combination retention roof drainage with emergency drainage as siphonic flow with DRAINJET standard hood is optimally suited for larger roof areas where the structural analysis only permits a low maximum water level on the roof.

The emergency drainage achieves a discharge of 7.0 l/s at only 15mm overflow above the retention pipe height, which corresponds to approx. 240m2 roof area depending on the rainfall intensity.

The outlet is via a pipe-in-pipe downpipe with only one visible downpipe. For increased backflow protection from the underground pipe, the pipe-in-pipe rainwater standpipe with HSÜ can be used.