2019 Cougar 369BHS outdoor kitchen gray tank?

[autoteacher]

Hello all, I have a 2019 Cougar 369BHS 5th wheel we have owned for less than a year. I know there is a gray tank for the kitchen and one for the bathroom. My question is does the outdoor kitchen have it's own gray tank? There is a dump connection and lever for it at the rear of the camper. After running the water in the sink for less than one minute the sink is full and doesn't drain. When I open the dump valve the sink drains. I have tried reverse flushing the system but it didn't help. So before I start dropping the underbelly does anyone have the same camper or know if there is a gray tank or not. Thanks

 

[JRTJH]

Looking at the brochure specs and your description of what happens when you use the outdoor galley sink, I'd say no, you do not have a connection to a gray tank for that sink. Many of Keystone's outdoor galley sinks drain into a 1.5" pipe which is connected to the sewer outlet. The intention was to either use a "rolling waste water tank" a 5 gallon jug or connect the discharge outlet to the campground sewer.

In some campgrounds or "boondocking sites" it is OK to drain sink water onto the ground. Other places it's illegal and can lead to "issues with management"...

Why did Keystone plumb it that way ???? Chances are that there is no gray tank near the outdoor galley sink and there's not enough "drain slope" to the nearest gray tank, so they (Keystone) installed the sink, no tank and left it to the owner's imagination on how to dispose of the waste water.

 

[autoteacher]

Thanks for your response. I was kind of thinking the same thing. The kitchen and bathroom gray tanks are front and middle of the camper and I can see them on my in-command, but no third gray tank. Not liking no outdoor kitchen tank since we boondock most of the summer on ocean beaches. I guess you have to take the good with the bad.

 

[JRTJH]

Amazon has a 28 gallon portable holding tank for $115. https://www.amazon.com/Camco-39000-...-lpcontext&ref_=fplfs&smid=ATVPDKIKX0DER&th=1

I'd think that should work to keep your outdoor galley sink happy... Think twice before getting a larger tank. A 28 gallon tank, when full, weighs around 230 pounds. That's a BUNCH to lift into the back of your truck to tote to a dump station. A larger tank, say the 36 gallon size, weighs in around 300 pounds. It's OK if you can hitch it to your truck and tow it to a dump station, but if the road is "long" or "rough" then you risk destroying the wheels on the tank towing it. So, no matter the tank size, sometimes you get in a situation where you simply have to lift it into the truck to get it to a dump station.

This is one time where bigger is not always better.....