Main-Emergency-Combination Retention Roof Drainage
with the proven pipe-in-pipe system
![[Translate to EN:] Haupt-Not-Kombi Retentionsdachentwässerung](/fileadmin/_processed_/7/4/csm_AKTUELL_163_f160427c83.png "[Translate to EN:] Haupt-Not-Kombi Retentionsdachentwässerung")
LORO-X Series 88 VARIOFIT main-emergency combination retention roof drainage for main drainage with rainwater retention on the roof (retention) 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 dam 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 the discharge curve only shifts in height.
(1) In the model with the emergency drainage as a spout, the emergency drainage can drain into the open air with free surface flow in small areas.
(2) In larger areas, the emergency drainage with pressure flow and mini hood offers a significantly stronger discharge via the internal DN50 downpipe.
(3) If only a low maximum water height is permitted on the roof, the model with a standard hood is used.
(1) Emergency drainage as a spigot (up to 75m2)
DL mini hood for gravity flow
The LORO-X main emergency combination retention roof drainage with emergency drainage as a spout is ideal for smaller roof areas.
The emergency drainage system provides a discharge of 2.2 l/s at 40 mm overflow above the retention pipe height, which, depending on the rainfall, corresponds to approx. 75 m2 of roof area.
The outlet is a spout with the visually appealing pipe-in-pipe branch.
LORO-X series 88 VARIOFIT main-emergency-combination retention roof
for main drainage with rainwater retention on the roof and interior emergency drainage into the open.
Note: In case of a planned water height exceeding 100 mm, pleas contact the LORO Service Team!
| LORO-X series 88 VARIOFIT retention roof drainage |  | |
| Main drainage-Emergency drainage-combination | DN 100 | |
| with object-related retention openings for the main drainage and variable-height weir for the emergency drainage Please contact the LORO Service Team before ordering ! | 01485.100X | |
| LORO-X Branch - pipe in pipe - |  | |
| DN 100 | ||
| made of galvanized steel | 13519.DB0X | |