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Sewer pipe air vent question

Ok. Front view now. How about coming round the bend, then having the air vent coming up from the next piece of pipe such as a branch (which I already have) and then double bend it back into the coroner for the vertical run?


IMG_9248.jpeg
 
The fact that you can't readily find a three-way junction that works in this scenario would indicate that it's not a 'normal' arrangement.
Anyone got a solution for this?
 
Ok. Front view now. How about coming round the bend, then having the air vent coming up from the next piece of pipe such as a branch (which I already have) and then double bend it back into the coroner for the vertical run?


View attachment 380587

Assuming that the 90 degree bend in the corner is a standard fitting, I can't see an issue with this.
It's almost identical to the setup in my place BUT note that my waste heads directly down to the drains at the point it leaves the bathroom!!
 
I've actually just seen this on the Flomaster website...

IMG_9306.jpeg


If I can fit an AAV around 2-300mm above the soil pipe I don't need to bend it back towards the corner. Does this sound right? I'm sure 800mm was mentioned before.
 

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