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Opposite of an AAV?


epsilonGreedy

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5 minutes ago, ProDave said:

If you had one that opened on positive pressure it would let all the stink into the house and might as well not be there.

 

Ok. Just thought it was possible that venting off positive drain pipe pressure was required at times hence the part I am looking at.

 

In my case I need an AAV for the start of the under static caravan foul drainage plan and the more I look at this component the more convinced I am that it works in reverse.

 

I will leave the mini stack open for the moment, buy a genuine Brett Martin AAV and then compare.

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5 minutes ago, ProDave said:

Just connect a vent stack to the static caravan, that is what I did.

 

 

I did not want a roof height stack because I did not want the associated the hassle and screw holes of supporting the stack hence the plan for a short external stack at about toilet seat height.

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16 minutes ago, epsilonGreedy said:

 

I did not want a roof height stack because I did not want the associated the hassle and screw holes of supporting the stack hence the plan for a short external stack at about toilet seat height.

If the pipe falls less than 1300mm invert to invert you dont really need one tbh.

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