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Old 07-26-2014, 08:25 PM   #1
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Two gray water tanks

I just purchased a 2015 Rookwood 8289WS and it has two gray water tanks. My question is how do you connect the tanks to one sewer hose? Do you tie the hoses at the sewer connection or at the sewer dump?
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Old 07-26-2014, 08:40 PM   #2
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My Windjammer has two tanks. On a full hookup site, I usually drain separately. There is a Y adapter made to connect the two lines. I would not leave the drain valves open because sewer gases can leach back into the camper through the sink and shower drains. Bobo
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Old 07-26-2014, 08:43 PM   #3
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You can do 2 different things hook them up one at a time or buy this Amazon.com: Camco 39812 RhinoFLEX Wye: Automotive and 3 hoses
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Old 07-26-2014, 08:45 PM   #4
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On my prior TT I used a wye and tied them together well before the sewer connection run. I had a lot of sewer hoses just in case, all Rhinoflex. I ran a 10 or 15 foot hose from the front galley drain along the EDDIE of trailer (part under a slide) to the wye which was also hooked up to a 5 foot hose that went to the other drain. Then from the single end of wye to 15 foot hose to sewer. Use a slinky for both the run from galley and from the main drain to sewer. Seemed to work pretty well for me.

I seem to recall trying to use the wye closer to sewer but didn't like the setup, plus had so much more sewer hose going out that way.

I had bought 2 of the 15' Rhino hoses, took the sewer connection off of one and put regular bayonet end on instead. Also had the 5' and 10' sections as well. Better safe than sorry. Made 2 fence post carriers to keep the sections in and mounted under the TT.

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Old 07-26-2014, 08:46 PM   #5
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We also have a 8289....I have used 2 short hoses( 5') hooked up to a "Y" then to the longer hose....but have discovered that when we have full hookup...its just easier to do as the previous poster and just do one, then switch over and do the other...probably quicker than fooling around with 3 hoses and a Y....its been talked about in the past on here, I am sure they will chime in, but some have modified their plumbing to have just one outlet. I have considered doing that, but so far haven't been bothered too much by doing what I do.
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Old 07-26-2014, 08:54 PM   #6
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Yeah it did take a little longer to set it up and take down using the 3 hose approach, but it was a trade-off for not having to switch hoses to drain the tanks mid-stay - only have to mess with handling and moving hoses at the end. I found our galley tank filled up much quicker and needed several drainings, but we cooked indoors a lot and washed quite a few dishes.

I go back and forth on the leave gray open/closed during stays. Sometimes I get some odor creeping in, other times I don't, and that's usually the deciding factor.
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Old 07-26-2014, 08:55 PM   #7
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Another way to do the lone grey tank is hook up a garden hose with a valve at the open end to the cap on the tank . Run that hose over to the campground hook up. This way you don't have to crawl under a slide like on my trailer and you only need the one sewer hose plus the garden hose takes up less space. Leave the valve under the trailer open and when the tank needs draining open the valve at the end of the hose.
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Old 07-26-2014, 09:10 PM   #8
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This is what I use when I want both hooked up:



I generally only do that if we are going to be there for a week or longer. If just a long weekend I'll use a single hose and go to each drain when dumping.
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Old 07-26-2014, 09:28 PM   #9
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Quote:
Originally Posted by WFD View Post
We also have a 8289....I have used 2 short hoses( 5') hooked up to a "Y" then to the longer hose....but have discovered that when we have full hookup...its just easier to do as the previous poster and just do one, then switch over and do the other...probably quicker than fooling around with 3 hoses and a Y....its been talked about in the past on here, I am sure they will chime in, but some have modified their plumbing to have just one outlet. I have considered doing that, but so far haven't been bothered too much by doing what I do.
Thanks for your info. What size is the gray water tank on the 8289 without having to look it up, do you know?
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Old 07-26-2014, 11:38 PM   #10
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