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Old 07-19-2019, 06:30 PM   #1
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Gray tank capacities

Greetings all, I have a 2018 Vibe xtreme lite 261bhs and the brochure and all the literature provided states that I should have 90 gal of gray tank capacity with 1 tank however I actually have 3 separate tanks with discharge valves, 1 kitchen, 1 shower and another for the bathroom sink. Does anyone know the actual size of these tanks, and tanks for the help.

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Old 07-21-2019, 10:37 AM   #2
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The brochure normally gives total capacity with 90 gal its safe to assume each is 30. empty one and fill until full using a five gallon bucket and see what you get. good luck let the forum know what you find.

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Old 07-21-2019, 10:56 AM   #3
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Seadog is right. Easiest way is to use a 5 gallon bucket and verify. I found on my 5th wheel the factory used larger tanks than the specs said. I am not complaining. I had to take the cover off the bottom of the trailer and Googled the part numbers of the 3 tanks because I am a bit OCD. LOL
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Old 07-21-2019, 11:06 AM   #4
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shocked you have 3 tanks and capacity on a ultra lite that small. I don't have that much on a 43 foot 5th wheel. as others have said buckets or a water meter when tanks are clean are the easiest way to know for sure. You can ad an extra gate valve and back fill the grey tanks (don't ever open black when doing that)
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Old 07-25-2019, 07:58 PM   #5
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Sorry for the late reply and thanks to all who replied. Sea dog was correct, all three were at least 30 gallons each verified by the 5 gallon bucket.
Oh and thanks to kimber45 for the advice on the extra gate valve, that will essentially turn my shower and bathroom sink into a single 60 gallon tank. Thanks again, good stuff
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Old 08-31-2019, 04:17 PM   #6
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I did the same thing with a 5 gallon bucket. I also put a valve in to tie the shower and sink together. After that I decided to try something else. I ran a water hose from the front valve to the back valve now I canít tie all three tanks together. I put a spitter on the back and ran a short hose to my potable dump tank and I can drain all 3 grey tanks in the dump tank for extended camping trips.

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