|
My Laredo has an outdoor sink and it does drain into the black tank. I know this for sure as I performed the test indicated earlier about pouring a a few litres (sorry the Canadian in me slipped up) I mean a gallon of water down each drain to see where it emptied.
There is no P trap on this out door sink, but you can see there is something in line with the drain on my Laredo - so I assume it is a 1-way check valve. I have never smelled sewer odor in my sink drain.
Maybe yours is the same way... hope this helps.
__________________
2011 Keystone Laredo 291TG
2003 Avalanche 5.3L w/ 4:10 gears
Reese HP Dual Cam 
|