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Old 10-01-2015, 08:07 PM   #1
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Water overflow tube problem

Fresh water tank draining while driving or sitting on a slope. Has anyone added a P Trap or shut off valve to the overflow tube? Or are there other solutions to correct the problem? Any suggestions and photos of fix would help. Also is the overflow tube also used as a. Ent tube for the tank or can it be shut off after filling the tank. As always thanks for your quick responses and help.
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Old 10-01-2015, 08:49 PM   #2
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Thought FR took care of the siphon problem. You have a couple choices. You can put a loop in the clear overflow hose or add a "p" trap inline. Either will solve the problem.


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Old 10-01-2015, 09:37 PM   #3
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Thanks for the info. Will give it a try.
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Old 10-01-2015, 09:55 PM   #4
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I forgot to mention that I went with the p trap. I used 1/2" pvc. It's not pretty but, no more problem.


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Old 10-02-2015, 05:40 PM   #5
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Hey drivmsafe, could you post a pic of the installed p trap?

thanks
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Old 10-02-2015, 06:05 PM   #6
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Electric Solution

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Originally Posted by Mr J View Post
Fresh water tank draining while driving or sitting on a slope. Has anyone added a P Trap or shut off valve to the overflow tube? Or are there other solutions to correct the problem? Any suggestions and photos of fix would help. Also is the overflow tube also used as a. Ent tube for the tank or can it be shut off after filling the tank. As always thanks for your quick responses and help.
We fitted an electric water valve in the overflow line taking the feed for it off the pump supply. This means that when the pump is switched on, water or air can flow as necessary. When the pump is switched off the valve closes and seals the tank. So you just have to remember to switch the pump on when you are filling the tank and off when you are travelling.

CAVEAT If you overfill the tank, you will get the top of the tank bulging upwards until it can be caught up on the slideout ram mechanism. The result is a large and horrible hole in the top of the tank and the tank wrenched past its restraining wood blocks in synchronisation with the movement of the slideout and multiple shouts of "Water everywhere!!""
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Old 10-02-2015, 06:32 PM   #7
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Water overflow tube problem

It ain't pretty. Kinda hard for me to work in such a small space. Used 3/4" pvc.

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Old 01-14-2016, 11:36 AM   #8
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Again finding this group has made a huge difference. I've had my tank siphon dry three times and thought I was going crazy.


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Old 01-14-2016, 11:36 AM   #9
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I just got back from the dealer telling them the situation. They looked at me like I was crazy!!


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Old 01-14-2016, 01:02 PM   #10
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Overflow

Well I fixed the problem with the water draining out. I took the overflow tube out and replaced it with a new longer one. Made a loop in it so the loop was above the water tank. Fixed the problem for around $4 for the new tube. Will post picture of the fix soon.
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