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Old 04-22-2009, 04:44 PM   #1
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Draining Fresh Water Tank

Need to drain the fresh water tank in our 2001 Bus. The only thing that I can find is 2 little faucet like valves in the dump bay. The water comes out of something like 1/8 th inch tubes. Takes 4-5 days to dump the water.
Anyone know of a faster way to do this?
thanks
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Old 04-22-2009, 05:18 PM   #2
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The two dump valves in water bay maybe your low point drains for water pipes in coach to faucets and washing machine bay. Your water tank should have its own drain valve and maybe another one if your water tanks are split. The drains would be near white water tanks mid-coach area in storage compartment.
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Old 04-22-2009, 05:55 PM   #3
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I have 2 valves in the front of the bay and 1 at the water pump that I can see. I will look for another one tomorrow.
thanks
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Old 04-22-2009, 08:44 PM   #4
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Dave: It has been suggested on another forum to make sure all facuets are closed, then open the low point drain valve, then turn on the pump. Let the pump drain or pull the water out through the low point drain valve.

I hadn't thought about this before but will sure give it a try when it comes time to winterize once more.

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Old 04-22-2009, 10:15 PM   #5
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Thanks Marty
Was gonna leave the faucets open. Glad you posted that.
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Old 04-26-2009, 06:52 AM   #6
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Well couldn't find another valve. I opened the blue valve and water came out way faster than before only problem is that there is still about 2" of water in the tanks that won't drain. Not sure if that is bad or not but can't see any other way of getting it out.
thanks for the info.
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Old 04-27-2009, 06:27 PM   #7
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Tank drain valve

Dave, my bus has 3 drains behind the pump. Low point [2] and fresh water tank drain valves. Look under the dump bay to see if you have 3 drain pipes hanging down. The valve may be hidden in that crowded area but is probably just above the 3rd pipe that is the tank drain. Takes only a few minutes to drain the tank only. No need to open valves in coach. The tank has a vent that allows air to enter as water exits.
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Old 06-14-2009, 11:01 AM   #8
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Dave- Not so long ago most mfgr's had the tank exit cut into the side of the tank. Frequently the tank is hung off the frame by allthread and on some coaches you may be able to make an adjustment to the slope of the tank using the threaded rod- jack up the remote end of tank and lower the drain end (you'll spend a while downstairs doing this, and won't want to do it fast so as to take time assuring you are not stressing any plumbing). That will still leave some water in the tank.

Lately I've seen folks getting the drain point moved to the bottom of the tank (and more recent designs usually have a bottom outlet rather than side). You can usually get instructions from the tank mfgr to do this; care is required not to weaken the tank. Many tanks came w/multiple bungs (thickened spots) so taps could be made where desired. Most who do this are interested in tank capacity for boondocking rather than sanitation.
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