Above Ground Drainage

[jaydebruyne]

Have come to do a job I wish I hadn't agreed to!

Ground floor toilet joins underground drainage but is vented with an AAV.

1st floor bathroom currently plumbed in via a sanipro.

I'm removing the saniflo and plumbing in the bathroom to join the underground drainage and was going to vent it with an AAV that you can fit below the flood level.

Question:

Can I remove the AAV on ground floor toilet, replace with an access plug and vent both this toilet and upstairs bathroom with AAV I'm fitting upstairs?

Cheers

 

[joni os]

If ground floor WC goes straight into branch on main run, eliminate AAV . If on horizontal run with connections from basin or shower best keep AAV.