The water and gas supply and discharge pipe outlets must be centred in the 8 cm service gap created by fitting two 60 cm base units (of which one is a sink base unit) back-to-back or in the 5 cm gap created by fitting a 60 cm sink base unit against a 35 cm base unit. In a longitudinal direction they must be centred on the centerline of the sink and must fall within 30 cm (corresponding to the length of the pipe guard supplied on request by Valcucine if the kitchen is raised on supports).

For excellent hood extraction it is necessary to provide a 15 cm diameter flue pipe whose centerline.

It is very important to consider the correct aeration of the kitchen through the aeration holes in the wall that must be sized according to the laws in force.