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Old 05-07-2012, 01:51 PM   #1
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Two Dump Connections Mod

Has anyone done this mod?

I have two dump connections. One for the kitchen gray water, and one for the bathroom gray water and black water. When my slides are out, I cannot get to the kitchen gray water. Plus, even when I do, I either have to move my hose back and forth between the connections, or use a Y in the dump line, which is unsightly and creates some back flow issues.

I am considering connecting the outlets with PVC, and turn it into one connection. I'd also add a dump valve so that the front gray water tank could be drained with the slide open, OR just leave that valve open all the time unless I'm dry docking.

Has anyone done this mod? If so, what do I need to look out for? I've searched and have not found where this has been done, so wonder if I'm missing something.


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Old 05-07-2012, 04:32 PM   #2
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Sounds interesting keep us posted with your progress

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Old 05-08-2012, 05:25 AM   #3
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I don't see any reason you couldn't. The fittings compatible with sewer outlets are readily available. I just switched our trailer from bayonet to cam lock fittings and had no problem fining proper reducers etc. Do however retain both blade valves.
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Old 05-13-2012, 08:20 PM   #4
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Interesting. I have two drains like you. I dont understand why they did that!? I get your concept. Will you still be able to travel or would you have to remove this pipe? I have 2 axles in there!
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Old 05-14-2012, 06:11 AM   #5
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I am going to look at it more closely on my next outing. I have a few ideas. One is a permanent mod that would require cutting into the existing system. I haven't pulled the cover off the undercarriage to see exactly what's there. The other is a piece I'd install when I setup that would join the drains together with plastic pipe instead of the slinky. It's still something to carry and install but it makes dumping easier and the look cleaner. All just ideas right now. On a Saturday morning with a couple of Bloody Mary's I'm sure the end result will be completely different.
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Old 05-14-2012, 07:26 AM   #6
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You don't mention your rig - I have the exact same problem with my Serrano 31X MH. I'm still planning my mod. Gravity won't do it for me as I'll need to go over the axle. I've also noticed my kitchen gray water fills much quicker than the bathroom so I'm thinking of a pump that could move kitchen gray into bathroom gray for storage or for single access, dump. I'm using the bloody mary's for planning purposes.
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Old 05-14-2012, 08:30 AM   #7
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I have a Keystone Outback 312BH. I have dual axels in the rear like Skipper, so have to contend for that as well. I've been looking at available parts to come up with different ideas. We are taking her out again for Memorial day, so I should have a plan by then. Unfortunately, I can't store or work on the TT at home, so am limited to what I can do while camping or in the storage yard.

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