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Old 09-15-2022, 01:34 PM   #12
Carl n Susan
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Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,324
M.O.C. #4831
Quote:
Originally Posted by Foldbak View Post
I don't suppose their using those on black tanks....
A normal vent stack is used for most of the tanks including the black one. The Air Admittance Valve comes into play when there is no place for a vent stack such as in a standalone island.
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Carl (n Susan)
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2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB

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