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Author Topic: AAVs and Airtightness  (Read 2778 times)

Andy Palmer

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AAVs and Airtightness
« on: June 18, 2014, 04:02:59 PM »
Hi all,

A quick question about using Air Admittance Valves (Durgos) in a Passivhaus. (Note that the drain will be ventilated with an external open vent at the end of the run.)

Are there any implications for airtightness and airtightness tests? I can't find information on the opening pressure apart from one test document which seemed to suggest it was sixty-something Pa. Can/should I seal AAVs during testing?

Thanks in advance,

Andy

Nick Grant

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Re: AAVs and Airtightness
« Reply #1 on: June 18, 2014, 06:23:45 PM »
We seal them and also make sure traps have water in.

Nick

Andy Palmer

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Re: AAVs and Airtightness
« Reply #2 on: June 18, 2014, 06:26:28 PM »
Cheers Nick.  :)