Quote:
Originally Posted by PhilandRudee
I have a 2012 3750FL and have the valve on both sinks. In the bathroom it is inside and towards the back of the vanity behind and down stream from the "P" trap. It is on a vertical PVC "extension". I would imagine if you don't see something like that then you don't have it and likely don't need it. Mine was doing the same thing .....pee yew ....and my replacement valve just arrived from Amazon so will get it installed later today.
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Update: I installed the new valves and it has taken care of the odor issue. Now we can run the vent fans again!