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Old 09-01-2018, 03:34 PM   #1
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Keystone Everest with 2 gray water tanks

Hi, I'm new here so I hope posting here is okay. I am currently temporarily living in my fifth-wheel during constructionon a home. We have tied our rv sewer into the main. There are two grey water tanks with two separate valves. Is there a way to tie the second grey water tank which is in the rear of the RV into the main sewer hose that is going into the sewer Main? It is very difficult to get to that second water tank to open the valve, and also not very convenient to have to keep switching the sewer hose back and forth. Any links to videos or help would be greatly appreciated, thank you
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Old 09-01-2018, 04:09 PM   #2
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To quote the movie "RV," "What you need is one of them Y-connectors."

Actually, this should take care of what you want to do:

RhinoFLEX Y Connector

Run a hose from each tank into the "Y" and a short piece of hose from the output of the "Y" to the sewer. You'll be able to leave the valve open on the hard-to-reach grey tank.
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Old 09-01-2018, 04:13 PM   #3
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Lol, �� ok, I will look into it. Just not sure where to tie it in. This is my first trailer. So much to learn
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Old 09-01-2018, 04:24 PM   #4
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Originally Posted by Gbellous View Post
Hi, I'm new here so I hope posting here is okay. I am currently temporarily living in my fifth-wheel during constructionon a home. We have tied our rv sewer into the main. There are two grey water tanks with two separate valves. Is there a way to tie the second grey water tank which is in the rear of the RV into the main sewer hose that is going into the sewer Main? It is very difficult to get to that second water tank to open the valve, and also not very convenient to have to keep switching the sewer hose back and forth. Any links to videos or help would be greatly appreciated, thank you
You might explain how you tied your RV sewer into your house sewer main. Bob's Y gadget would require one sewer hose from one gray tank to the Y and a second sewer hose from the second tank to the Y and THEN a single sewer hose to the main.
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Old 09-01-2018, 04:29 PM   #5
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You might explain how you tied your RV sewer into your house sewer main. Bob's Y gadget would require one sewer hose from one gray tank to the Y and a second sewer hose from the second tank to the Y and THEN a single sewer hose to the main.
Currently the RV sewer hose is attached where the black and grey tanks come out together at the front of the rv. That long hose then runs into the sewer main. The second grey water tank is on the opposite end of the trailer towards the back. Which is where the main happens to be, I hope I'm making sense
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Old 09-01-2018, 08:57 PM   #6
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Ultimately, you'll want your setup to look pretty much like this:

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Old 09-02-2018, 12:49 PM   #7
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Rockfordroo, that's some serious RV plumbing there!
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Old 09-02-2018, 12:58 PM   #8
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I had to do the same with my previous TT:
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Old 09-02-2018, 02:24 PM   #9
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Rockfordroo, that's some serious RV plumbing there!
It's not mine. I shamelessly stole the pic off the internet!
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Old 09-02-2018, 08:08 PM   #10
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Ultimately, you'll want your setup to look pretty much like this:

Now, if one of your gray tanks is only "gray," you can do what we did with ours. At the valve outlet put a cap that has a hose fitting built into it (available at RV stores), then run a length of standard garden hose (I used an old hose piece that was 3/4 size garden hose from a hose that I was going to throw away. I cut it to run along the side of the trailer to the other inlet, put a new connector on it and put one of those on/off plastic valves on the connector (close this to prevent back flow into the gray water hose when emptying your blackwater from the other outlet). Then put a cap on the Y connector (where you would have put the full size waste hose) that also has a hose fitting on it. Now you have a small hose from the gray only tank to the Y and the larger hose to the sewer. I find it works great and only cost a couple $ for a few hose fittings. Since there is about 20 feet between the outlets (we have a galley tank in a front kitchen) it saves storing another 20 ft. of sewer hose just for the gray water and tucks up nicely on the ground out of the way along the edge of the trailer. When done, it coils up and stays inside a storage area outside the trailer.
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Old 09-02-2018, 08:58 PM   #11
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Now, if one of your gray tanks is only "gray," you can do what we did with ours. At the valve outlet put a cap that has a hose fitting built into it (available at RV stores), then run a length of standard garden hose (I used an old hose piece that was 3/4 size garden hose from a hose that I was going to throw away. I cut it to run along the side of the trailer to the other inlet, put a new connector on it and put one of those on/off plastic valves on the connector (close this to prevent back flow into the gray water hose when emptying your blackwater from the other outlet). Then put a cap on the Y connector (where you would have put the full size waste hose) that also has a hose fitting on it. Now you have a small hose from the gray only tank to the Y and the larger hose to the sewer. I find it works great and only cost a couple $ for a few hose fittings. Since there is about 20 feet between the outlets (we have a galley tank in a front kitchen) it saves storing another 20 ft. of sewer hose just for the gray water and tucks up nicely on the ground out of the way along the edge of the trailer. When done, it coils up and stays inside a storage area outside the trailer.
This is what the Prof is talking about:



One on the gray tank outlet, one on the Y fitting, run a garden hose between them.
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Old 09-02-2018, 10:23 PM   #12
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Our daughter is fulltiming and bought the hose cap for the galley gray tank. She has a hose connected that runs to a nearby fruit tree and leaves it open all the time (for now, warm days and nights).
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Old 09-02-2018, 10:30 PM   #13
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Our daughter is fulltiming and bought the hose cap for the galley gray tank. She has a hose connected that runs to a nearby fruit tree and leaves it open all the time (for now, warm days and nights).
She would probably get tossed in jail out here in the west doing that...or at least a big fine and possibly kicked out of the park!
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Old 09-03-2018, 09:39 PM   #14
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This looks even harder then mine. I have to crawl under my rig to just flush my system. Non of my water pumps work and they leak so dont use gray tanks at all. Garden hose is great you can go green if allowed and use to water with gray water. Mine is 2014
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Old 09-03-2018, 10:42 PM   #15
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We live on a semi-rural lot where no one would notice hoses watering a tree. Because water is such a precious commodity in the West (we are in NV) we use any water possible for trees and bushes. If I handwash dishes we throw the water on our landscape plants. Technically, above ground grey water use is not legal here.
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Old 09-03-2018, 11:05 PM   #16
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This looks even harder then mine. I have to crawl under my rig to just flush my system. Non of my water pumps work and they leak so dont use gray tanks at all. Garden hose is great you can go green if allowed and use to water with gray water. Mine is 2014
2014 what? It's not listed in your profile.
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Old 09-04-2018, 06:14 AM   #17
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2014 what? It's not listed in your profile.
Forest river rockwood ultra lite sorry.
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