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10-22-2015, 09:28 AM
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#1
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Member
Name: Marcia
Trailer: '00 Burro 17' WB
Seattle, WA
Posts: 70
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Gray water backing up while towing
Just finished a 2000+ mile road trip in my '00 Burro. It towed beautifully and I am very happy with things with one exception. Seems that if I have more than a couple gallons of gray water in the tank, it sloshes up through the shower drain when I travel. I arrive at my destination with a wet and sometimes stinky shower floor. Very unpleasant. Anyone have the same experience and a solution? I often boondocking so will end up carrying gray water for a while before I can dump.
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10-22-2015, 09:39 AM
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#2
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Senior Member
Trailer: 2004 13 ft Scamp Custom Deluxe
Posts: 8,520
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Check the drain, if it is the same as the typical sink drain it will have internal threads which are made to accommodate a screw in plug.
You should find the plug at any RV shop. If it is not this type it might be a simple matter to switch. They are not at all expensive.
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10-22-2015, 09:45 AM
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#3
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Senior Member
Trailer: 92 16 ft Scamp
Posts: 11,756
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Have had it happen in my Scamp but the grey tank needs to be pretty full before it happens when driving.
Only answer I have to it is as Floyd suggests making sure you have the shower plug screwed down tight.
I actually carry a smallish tote to drain off the grey water a little bit if I believe its getting close to full as I hate walking into the bathroom in the middle of the night and getting my feet wet
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10-22-2015, 10:11 AM
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#4
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Administrator
Trailer: Casita 1999 17 ft Liberty Deluxe
Posts: 10,948
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A more involved but excellent solution is one we did to our Casita: replacing the trap with a HEPVO valve.
HEPVO Waterless Trap on Casita.
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10-22-2015, 12:53 PM
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#5
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Senior Member
Trailer: 2000 Burro 17 ft / 2001 Toyota Tundra V8 2wd
Posts: 339
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I don't have a solution but the same thing happens to me if when the gray tank is fairly full. I always try to dump the tanks when possible before leaving a camp site. Since I never use the shower, I'm even thinking about capping off the shower drain so this doesn't happen.
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10-22-2015, 02:40 PM
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#6
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Senior Member
Trailer: Oliver
Posts: 713
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Oliver installs a blade valve downstream of the shower drain to prevent this. It is controllable from within the shower/bath. That might be an option for you.
__________________
Steve and Tali - Dogs: Rocky and our beloved Reacher, Storm, Maggie and Lucy (waiting at the Rainbow Bridge)
2008 Outlaw Oliver Legacy Elite & 2014 Outlaw Oliver Legacy Elite II
2022 Silverado High Country 3500HD Diesel 4x4
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10-22-2015, 02:56 PM
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#7
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Senior Member
Name: Dennis
Trailer: Scamp
Minnesota
Posts: 409
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Quote:
Originally Posted by ThomasE
I don't have a solution but the same thing happens to me if when the gray tank is fairly full. I always try to dump the tanks when possible before leaving a camp site. Since I never use the shower, I'm even thinking about capping off the shower drain so this doesn't happen.
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My response is exactly as yours!
__________________
2021 Nissan Pro 4X. 2020 Scamp 19’ Deluxe.
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10-22-2015, 03:01 PM
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#8
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Senior Member
Trailer: Escape 17 ft
Posts: 8,317
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Why wouldn't you just get the plug for the drain? Why make the shower inoperative?
__________________
What happens to the hole when the cheese is gone?
- Bertolt Brecht
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10-22-2015, 03:08 PM
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#9
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Senior Member
Name: Clif
Trailer: 08 Weiscraft Little Joe 14 Subaru Outback 2.5i CVT
Louisiana
Posts: 754
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Are you towing with the trailer level?
__________________
Clif
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10-22-2015, 03:10 PM
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#10
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Senior Member
Trailer: No Trailer Yet
Posts: 721
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Casita uses a blade valve on the shower drain.
As mentioned the installation of a Hepvo valve eliminates the rubber "J" trap and is maintenance free. Here's a U-tube of it.
Joe
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10-22-2015, 06:51 PM
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#11
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Senior Member
Trailer: 2004 13 ft Scamp Custom Deluxe
Posts: 8,520
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Quote:
Originally Posted by The Minimalist
Are you towing with the trailer level?
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Don't forget that you go up hill and down hill and accelerate and brake.
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10-22-2015, 06:59 PM
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#12
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Senior Member
Trailer: 2004 13 ft Scamp Custom Deluxe
Posts: 8,520
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Quote:
Originally Posted by Joe Romas
Casita uses a blade valve on the shower drain.
As mentioned the installation of a Hepvo valve eliminates the rubber "J" trap and is maintenance free.
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The Hepvo valve would not be relevant to Scamp since the drain/trap which I pictured above is all there is. It is connected to Tygon tubing from there to the gray tank.( a filter and a pump are used in line from the front bath)
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10-22-2015, 08:41 PM
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#13
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Senior Member
Name: Clif
Trailer: 08 Weiscraft Little Joe 14 Subaru Outback 2.5i CVT
Louisiana
Posts: 754
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Quote:
Originally Posted by floyd
Don't forget that you go up hill and down hill and accelerate and brake.
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So true, but if the trailer is way out of level some of those actions could be accentuated.
Leaving no stone unturned............
__________________
Clif
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10-26-2015, 09:37 AM
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#14
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Member
Name: Marcia
Trailer: '00 Burro 17' WB
Seattle, WA
Posts: 70
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Thank you for all the good input. The trailer tows impressively level....except for all the bumps and lumps and hills that we encounter along the road. I'm going to start with the simplest solution, the cap. I also thought of trying the small flexible silicone "lid" that is designed to cover a drinking glass. Hopefully no more stinky wet mess.
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10-26-2015, 09:52 AM
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#15
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Senior Member
Name: JD
Trailer: Scamp 16 Modified (BIGLY)
Florida
Posts: 2,445
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I would think that the pump's check valves would keep water from running from the tank to the shower pan.
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10-26-2015, 11:16 AM
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#16
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Senior Member
Trailer: 2000 Burro 17 ft / 2001 Toyota Tundra V8 2wd
Posts: 339
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Quote:
Originally Posted by Glenn Baglo
Why wouldn't you just get the plug for the drain? Why make the shower inoperative?
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I thought about a drain plug but I don't see anything that would fit, what I have appears to be a standard household shower drain. Also what ever I use to plug it can't stick up much above floor level as the drain is right in front of the toilet and could get stepped on or tripped over.
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10-26-2015, 11:29 AM
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#17
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Senior Member
Trailer: 92 16 ft Scamp
Posts: 11,756
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Quote:
Originally Posted by ThomasE
I thought about a drain plug but I don't see anything that would fit, what I have appears to be a standard household shower drain. Also what ever I use to plug it can't stick up much above floor level as the drain is right in front of the toilet and could get stepped on or tripped over.
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If it is a standard household shower drain you can purchase covers for them.
Amazon.com Silicone TUb Stopper and Drain Plug at most hardware stores.
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