Jump to content
Complete France Forum

the use of air admittance valves in France


Recommended Posts

SPANC said we needed to have primary ventilation into the house ( fosse with sand filter type treatment.

the plumber installed a 32mm. air admittance valve in the kitchen ( for when emptying the sink,etc. ) and a 100mm one, connected to the toilet waste pipe in the bathroom.

the SPANC employee said that both of these have to go through the roof.

How can we convince her that these valves were invented so that it was not necessary to make holes in the roof!?
Link to comment
Share on other sites

They are useful for letting air into the system if a partial vacuum is caused by flushing/emptying the sink, but they do not allow foul air out of the system.

I suspect they want you to have open pipes at roof height to do that venting out.

In this diagram https://assainissement.ooreka.fr/comprendre/fosse-septique-ventilation your valves are the primary ventilation (in). They are expecting a secondary ventilation (out)
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...