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  #1  
Old 11/18/10, 6:21 PM
Eldon E. Holliday, Jr. Eldon E. Holliday, Jr. is offline
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Default Air Admitance Valve
Is it acceptable to install an AAV in any position other than vertical? Unable to determine brand so I cannot search installation instructions by manufacturer. Any help would be appreciated.
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  #2  
Old 11/18/10, 7:07 PM
Marcel R. Cyr's Avatar
Marcel R. Cyr Marcel R. Cyr is offline
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Default Re: Air Admitance Valve
Most of the time it should be on the horizontal line mounted on a vertical stem.

Read hear. http://rds.yahoo.com/_ylt=A0oG7laLve...gnCriteria.pdf
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Old 11/18/10, 7:45 PM
James H. Bushart's Avatar
James H. Bushart James H. Bushart is offline
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Default Re: Air Admitance Valve
Quote:
Originally Posted by eholliday View Post
Is it acceptable to install an AAV in any position other than vertical? Unable to determine brand so I cannot search installation instructions by manufacturer. Any help would be appreciated.
The UPC forbids their use all together, I believe. Check to see which plumbing code the applicable jurisdiction has adopted.


James H. Bushart

Professional Building Analyst, BPI
Missouri, Kansas and Arkansas
314-803-2167
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Old 11/18/10, 7:51 PM
Marcel R. Cyr's Avatar
Marcel R. Cyr Marcel R. Cyr is offline
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Default Re: Air Admitance Valve
You are correct Jim, and forgot to say that. They are illegal to use in Maine unless for a renovation of existing conditions and approved by the AHJ.
Thanks for picking up on that.
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