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Old 10-02-2015, 06:27 AM   #1
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Fresh Water Tank

This is 1st time I filled our fresh water tank,on our 2014 Redwood 36 RL ,as we dry camped a few weekends this year. What I noticed while filling Water tank when it got near full with full pressure going in that water started coming out of the blue pipe at belly of trailer about 2-3 ft. away from main water tank drain. It did not stop draining until it sucked out about a 1/3 of the tank. So I only ended up with 2/3 of a tank of fresh water. I thought the overflow for the fresh water tank was the white pipe between the Two low point drain valves for hot & cold water lines. Is the white pipe a air intake as it seems to come off the top of the tank beside the main tank fill pipe. I originally thought the blue pipe was the drain from the washer pan?
Anyone got any answers for me?
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Old 10-02-2015, 07:53 AM   #2
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yep, put a valve on on the blue one and fill until water starts coming out then close it. At that point you can keep going until water comes out the white, but you might get splash back through the fill in our cabinet as you travel. I just let it fill a little more then stop, without necessarily getting any out the white.

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Old 10-02-2015, 12:21 PM   #3
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Basically you are creating a siphon , and until it breaks the siphon , it will continue to drain..I just did the same fix. I believe it was a $6.00 Home Depot fix..... Now we can camp with FULL Water tank when dry camping
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Old 10-02-2015, 02:29 PM   #4
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That's another one of those little problems that has been with RW since "Day One". They came up with a fix, but seems that fix has been lost like many of the other nagging little problems.
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Old 10-02-2015, 02:35 PM   #5
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Quote:
Originally Posted by mhs4771 View Post
That's another one of those little problems that has been with RW since "Day One". They came up with a fix, but seems that fix has been lost like many of the other nagging little problems.

I hate to disagree , ,
This is been a problem with MOST RV manufacturers , not just RW.. At least RW places the exit hose where you can get to it..
On my last SOB , I had to crawl under the trailer and reach up and around the axle to open it.. I finally took off that shut off valve , put an elbow on and ran the hose out near the edge of the trailer.. BUT it would hold water in the winter...
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Old 10-02-2015, 02:40 PM   #6
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Well we never had that problem with either of our two TT or our Montana, but none of them had this second overflow line, just the normal white line connected to the side of the filler port.
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Old 10-02-2015, 02:43 PM   #7
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I actually found my fix by reading over at RV.net a few years back. . . . There are a ton of folks with all kinds of brands with the same issue.. Once Siphon starts , its hard to stop..
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Old 10-02-2015, 03:07 PM   #8
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Well we never had that problem with either of our two TT or our Montana, but none of them had this second overflow line, just the normal white line connected to the side of the filler port.
I agree..... unless this is a new disease that all the newer RVs are catching. I've never had the siphon issue before the Redwood and I don't have it now.

I did over fill my water tank though...........and was relieved to see that the water stopped.

Note to self, don't turn on the water and then start a long conversation with a fellow RVer. Streams somehow start developing and wife gets very worried very quickly.
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Old 10-02-2015, 06:51 PM   #9
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Well , If you have never had this issue till the RW , I would consider yourself lucky?? Or maybe I and many others just have bad luck??? Either way , it was an easy fix on my RW!
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Old 10-02-2015, 09:22 PM   #10
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Originally Posted by Dave&Ginny View Post
I agree..... unless this is a new disease that all the newer RVs are catching. I've never had the siphon issue before the Redwood and I don't have it now.

I did over fill my water tank though...........and was relieved to see that the water stopped.

Note to self, don't turn on the water and then start a long conversation with a fellow RVer. Streams somehow start developing and wife gets very worried very quickly.
And double note to self - especially don't do that with the blank tank flush on and drain valve closed I don't have first hand experience, but I'm sure it would turn a pretty white roof another color!

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