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Old 08-16-2012, 10:15 PM   #1
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capacity of holding tanks

Was wondering about the sizes of the black water and the gray water holding tanks. The brochure says 78 gallons but is this combined capacity or is each tank 78 gallons
Thanks
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Old 08-16-2012, 10:37 PM   #2
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Quote:
Originally Posted by coltheviking View Post
Was wondering about the sizes of the black water and the gray water holding tanks. The brochure says 78 gallons but is this combined capacity or is each tank 78 gallons
Thanks
The brouchure should list grey and black...they are seperate tanks...sink/shower in the grey and the toilet goes in the black tank....You do not list your motorhome but it sounds like they are 78 gallons combined volume....bigger units have larger tanks....
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Old 08-17-2012, 08:09 AM   #3
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Appears Canadian mfg. are not required to list things per US requirements. Possibly the owners manual or call the factory...
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Old 08-17-2012, 09:45 AM   #4
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They normally list fresh, grey and black capacities as a matter of course. A phone call should answer your questions.
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Old 08-17-2012, 10:56 AM   #5
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If you have the ability to measure the tanks or 1 of them. LxWxH divide by 231 will give you the approximite gallons. Thats what I have to do to all my tanks.

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Old 08-17-2012, 06:11 PM   #6
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For a rough guess..... see how long it takes to fill a 1 gallon container with your water hose fully open, now fill your tank and time it. That accurate enough for what you are trying to achieve.
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Old 08-18-2012, 07:08 AM   #7
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If you dont have a sheet in a cupboard that lists all the specs you might be able to see it stamped on the side of the tanks. In the bay where the valves are for dumping the tanks on mine I can see the side of each tank. I can see where the level sensors are on the sides and each tank has its capacity stamped on the side.
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Old 08-18-2012, 07:19 AM   #8
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Unless you have a huge rig I doubt you have a 78 gal gray and black tank. Our coach is 45' and we have a 30 gal gray and 30 gal black. Our fresh is 100 gal. Just thinking 30's kind of a standard size even for big rigs.
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Old 08-18-2012, 08:09 AM   #9
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Quote:
Originally Posted by Cilrah
Unless you have a huge rig I doubt you have a 78 gal gray and black tank. Our coach is 45' and we have a 30 gal gray and 30 gal black. Our fresh is 100 gal. Just thinking 30's kind of a standard size even for big rigs.
Our 40ft Tiffin has 100 gal. fresh, 45 black and 70 gray.
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Old 08-18-2012, 08:14 AM   #10
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Unless you have a huge rig I doubt you have a 78 gal gray and black tank. Our coach is 45' and we have a 30 gal gray and 30 gal black. Our fresh is 100 gal. Just thinking 30's kind of a standard size even for big rigs.
My 34' MH is not huge. But it has.
Fresh Water 80 gal
Gray Water 60 gal
Black Water 40 gal

So my Grey & Black have a total of 100 gal.
I don't think 30 gal is a standard size. Most black tanks have 40 gal or larger.
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Old 08-19-2012, 09:08 AM   #11
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I've been known to be wrong in the past (according to the DW) but I don't see it that way

I feel like I've been robbed, this coach is larger then a bread box and it's got tanks the size of my old 29 footer, what the heck

I can only go like 2 maybe 3 days on the gray where the black won't need dumping for 2 weeks.
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Old 08-20-2012, 07:52 AM   #12
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2011 Allegro RED 36 ft. Fresh 90 gal
Gray 70 gal
Black 50 gal
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Old 08-20-2012, 10:44 AM   #13
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2013 Thor Four Winds 28Z

fresh: 40 gal
gray: 32 gal
black: 26 gal

All that on an E450 chassis with 210" wheelbase. So far, it's been plenty for the two of us dry camping for long weekends. I am a life-long tent camper so water conservation comes naturally.

...ned.
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