Advice on air admittance valve. Toilet

[2021bela]

Please see pic! I can't seem to fit this air admittance valve on the back of the toilet. Is there any other fitting I need for this to work.

 

[ShaunCorbs]

It’s not really designed for going back there

Isn’t the stack vented externally?

 

[2021bela]

It’s not really designed for going back there

Isn’t the stack vented externally?

Why does it have this on the top of the pan connector though!

Yes it has a vent pipe although this is connected to the same soil pipe underneath the floor. See pic below. It was either this or a sani FL w toilet although I was advised against the saniflow because of issues can arise with them.

 

[Scott_D]

It’s for waste from a basin for example

 

[2021bela]

It’s for waste from a basin for example

How would you get it in then. The toilet would still be in the way would it not.

 

[exedon2]

M&F elbow sometimes called a conversion bend

 

[ShaunCorbs]

A 32mm elbow just fits under

 

[2021bela]

So, the advice would be to get a 32mm elbow and take it away from the toilet a few inches then put the air admittance valve on there. My limited knowledge of these valves I was thinking they had to be on top of the pan connector.

 

[ShaunCorbs]

You can do that if you want

 

[Scott_D]

It should have come with a fitting

 

[Roy_66]

Sorry to be a bit slow and if I've missed the question. Presumably there is a sink associated with each w/c? Could you go for a cabinet style boxed in sink then hide the AAV inside that. Back of the loo could be boxed in also if you wanted. Get it all working nicely first.

The only bee in my bonnet I have about boxing in is the use of veneered chipboard (not good with water) - just my own view.

Cheers,

Roy (amateur)

 

[2021bela]

Sorry to be a bit slow and if I've missed the question. Presumably there is a sink associated with each w/c? Could you go for a cabinet style boxed in sink then hide the AAV inside that. Back of the loo could be boxed in also if you wanted. Get it all working nicely first.

The only bee in my bonnet I have about boxing in is the use of veneered chipboard (not good with water) - just my own view.

Cheers,

Roy (amateur)

Small sink in this room however it has its own pipe to the outside.

 

[2021bela]

It should have come with a fitting

What type

 

[2021bela]

You can do that if you want

Can I AAV be on its side or does it have to be vertical.

 

[ShaunCorbs]

Vertical normally manufacturer instructions will tell you

 

[Roy_66]

Small sink in this room however it has its own pipe to the outside.

There are lots of subtleties to getting wastes right, so I'd recommend getting a good professional in to sort it (The professionals on here have given lots of good advice). Just for interest (if you are interested) try the following video. Note it is USA plumbing standards not UK, but it gives you an idea of some of the issues you can have. Many amateurs think wrongly for wastes that it's just a matter of connecting stuff together. You obviously understand the need for vents of some kind.

A UK plumbing standard version of such video would be interesting.

Cheers,

Roy

 

[2021bela]

There are lots of subtleties to getting wastes right, so I'd recommend getting a good professional in to sort it (The professionals on here have given lots of good advice). Just for interest (if you are interested) try the following video. Note it is USA plumbing standards not UK, but it gives you an idea of some of the issues you can have. Many amateurs think wrongly for wastes that it's just a matter of connecting stuff together. You obviously understand the need for vents of some kind.

A UK plumbing standard version of such video would be interesting.

Cheers,

Roy

Mines goes to the outside and has an elbow emptying into a gully but not connected to the gully. It is open vented.

 

[Roy_66]

Mines goes to the outside and has an elbow emptying into a gully but not connected to the gully. It is open vented.

Sounds like you want to leave the sink alone then, so the AAV for the WC will have to go at the side of the loo. Perhaps there is some cunning piece of ornamental furniture you could disguise it with? (Get it all working first)