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Old 05-02-2018, 11:54 AM   #1
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Florida
Grey water tank/s

Hello all. I have a 2017 Denali 335RLK and I have questions about the grey water tank or tanks. I want to know what is the holding size, in gallons, for my tanks.

The spec sheets that I have found refer to the trailer as having ONE tank at 96 gallons but my trailer has TWO tanks and TWO grey water handles. One for the bathroom shower and sink and one for the kitchen sink. There is nothing that I can find that refers to a TWO tank set up.

I contacted Dutchmen and they referred me to the brochure which listed a single handle grey water tank and when I inquired again, they were not able to help me.

Does anyone out there have the same set up or can you point me to the right place to gather that info? Any ideas would be helpful.
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Old 07-17-2022, 03:30 PM   #2
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Grey Tanks - Size for each

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Originally Posted by makolab View Post
Hello all. I have a 2017 Denali 335RLK and I have questions about the grey water tank or tanks. I want to know what is the holding size, in gallons, for my tanks.

The spec sheets that I have found refer to the trailer as having ONE tank at 96 gallons but my trailer has TWO tanks and TWO grey water handles. One for the bathroom shower and sink and one for the kitchen sink. There is nothing that I can find that refers to a TWO tank set up.

I contacted Dutchmen and they referred me to the brochure which listed a single handle grey water tank and when I inquired again, they were not able to help me.

Does anyone out there have the same set up or can you point me to the right place to gather that info? Any ideas would be helpful.
****Same question - Did this ever get an answer?*****
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Old 07-17-2022, 04:38 PM   #3
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Do you have the outdoor kitchen with a sink?
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Old 07-17-2022, 05:16 PM   #4
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Ok, I know nothing about, nor do I ave any experience with the Denali's floor plan, or plumbing.

That said... my Voltage 3200 toy hauler does have TWO 39-gallon grey water tanks, with their own separate handles for emptying, as follows:
  • one tank for the bathroom shower & sink
  • one tank for the kitchen sink & garage washer/dryer discharge

Here is a schematic of the plumbing setup:

Voltage 3200 Schematic - Sewer.pdf
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Old 07-18-2022, 12:37 PM   #5
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Thank you for that input. That makes sense to me. We have the same set up, I’m sure. The specs I find say 78 gal. Grey, so makes sense that is to 39’s.
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Old 06-23-2023, 01:32 PM   #6
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Same question. The only specs I can find on my 2022 Aspen Trail 2260RBS state one grey tank. The brochure says 38 gallons but everything else I read says 42 gallons. There are two grey water dump valves, so I’m assuming the specs are wrong. What I would really like to know is the actual capacity. 76? 84? Two smaller tanks at either 19 or 21?

Would taking actual measurements with a flow meter be the only way to tell? It seems odd that a manufacturer can’t accurately tell me what the built in the first place. I use the term ‘built’ loosely.
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