Drain systems

sewerage inspection siphon braga

braga exhaust column

After use by the various sanitary appliances and appliances, the water enters the exhaust system through a siphon and, through the pipes, is conveyed into a braga.

The siphon has the main function of avoiding the return of bad smells at home.

The braga is located under the WC and is connected to the upright column.

The riser in turn reaches the collector that collects the drains of all the riser columns and conveys them into the drainage system to which it is connected via a siphon.

The upstream column of the exhausts requires a vent, generally located on the roof of the house. This secondary piping is called "ventilation" and contributes to the elimination of the typical bubbling of the exhaust.

sink drain siphon

In case there are drainage pipes placed at a lower level than the sewage system (for example the drainage pipes coming from the cellars) they will be conveyed into a septic tank.

When the septic tank is filled, a pump activated by a level float starts, which directs the black water into the external sewer

Under the road

In rooms located below the level of the public sewage system, it is necessary to eliminate the discharge water of the toilets, which flow into a specific collection drainpipe, using a special autoclave system (a pump).

The pump starts running whenever the pit is full. The pump motor is controlled by a float switch located inside the pit.


Modern plumbing


Expansion vessel


The aqueduct


Drain instrallations


Reduce water consumption


Septic tanks and black wells

Portaombrelli design Luca Perlini

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