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Old 05-17-2020, 01:05 PM   #1
Join Date: Jun 2014
Location: Pahrump Nv.
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Filling fresh water tank

I purchased a used Motorhome 6 Months ago. I just started to check out the fresh water system. I started filling it up and I get a lot of water draining underneath. I checked it out and it is coming from a two inch pipe. What is this pipe for? Is it the overflow on the fresh water tank

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Old 05-17-2020, 01:18 PM   #2
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Surely, you will need to tell us what motorhome you have and where the 2" pipe is.

Brett Wolfe
Ex: 2003 Alpine 38FDDS
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Old 05-17-2020, 01:23 PM   #3
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It sounds like the water tank drain is open. I donít know about the avalanche, but on our 01 the overflows are a smaller diameter hose. On ours there is a handle on the front side of the drivers side storage compartment behind the propane compartment that opens and closes the drain valve.
Matt Kiger
2001 Alpine Coach
1979 CJ 7
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Old 05-17-2020, 04:33 PM   #4
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Also not familiar with the Avalanche. The 2Ē pipe does sound like the drain pipe. The overflow tubes are 1/2Ē PEX, one in front one in back. Can you visibly see the tank to confirm the water level?
2005 Alpine Coach 36MDDS
2015 Grand Cherokee Diesel
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Old 05-18-2020, 08:55 AM   #5
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….As you probably know by now, the Avalanche was a very low production run by WRV, so std. Alpine owners don't have much, if any, first-hand experience to help you. Your situation sounds like the dump valve on the water tank is open....early model Alpines have a 1 1/2" dump slide valve with a cable remotely attached to a T-handle--located on the side wall, in the basement, just behind the propane tank, on the driver's side.
Old Scout
2003 40' MDTS
New Braunfels, Texas
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fresh water, tank, water

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