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Gray Tank Leak
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02-12-2019, 05:23 PM
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Tbos
Senior Member
Join Date: Jul 2014
Location: Solomons
Posts: 3,874
Quote:
Originally Posted by
Steveo57
Those are air admittance valves, not vents. They don't vent air out of the tank, they draw air into the drain line to keep it from sucking the trap out when you drain the sink.
Thanks for the clarification.
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