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Old 10-29-2017, 03:06 AM   #1
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Brand: Thor Motor Coach
Model: 23TB
State: Illinois
Posts: 51
THOR #9509
fresh water tank drain

I own a 2017 Thor 23TB. Today I used compressed air to blow out water from the plumbing. However, I cannot find the drain to the potable fresh water tank. I drained the lines using the low-point drains under the sink area. However, I cannot find the drain for the fresh water tank. The manual is not helpful. Where do I find the valve?

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Old 10-29-2017, 03:22 AM   #2
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Model: 2017 Miramar 34.4
State: Florida
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THOR #9721
Quote:
Originally Posted by bobhhoy View Post
I own a 2017 Thor 23TB. Today I used compressed air to blow out water from the plumbing. However, I cannot find the drain to the potable fresh water tank. I drained the lines using the low-point drains under the sink area. However, I cannot find the drain for the fresh water tank. The manual is not helpful. Where do I find the valve?
Limited experience across models here. On mine there is a drain valve right on the base of the fresh water tank. Perhaps yours may be there as well?
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Old 10-29-2017, 09:47 AM   #3
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I have a 2017 ACE 29.3 the fresh water drain is just before the pump.
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Old 10-30-2017, 02:05 AM   #4
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Model: ACE
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Originally Posted by be happy View Post
I have a 2017 ACE 29.3 the fresh water drain is just before the pump.
I'm new to this world.
I also have the ACE 29.3. But, it's the 2018. I looked for the drain a couple days ago. When you say it's just before the pump, what pump and where. If they may be located in the same place. I wanted to drop 50 gals of fresh water (weight reduction) and had to do it the hard way. That took a while not to mention I had to dump it twice. Fresh water tank to black and gray tanks. Then dump them.
I guess ignorance is bliss. :-)

Thanks.
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Old 10-30-2017, 02:41 AM   #5
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Found it

The valve is in the compartment where the grey/black water valves are located.
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Old 10-30-2017, 06:39 AM   #6
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Model: 2016 Hurricane 29M
State: California
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Wow! That's where the Hurricane 29M low points are, at least that's my belief. The FW tank drain on it is in the compartment right under the tank. Easy to find and get to the valve and drains out on the ground underneath vehicle.
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Old 08-25-2021, 09:39 AM   #7
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I have a 2019 Thor four winds 31E. Does anyone know where the fresh water tank drain is?
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Old 08-25-2021, 05:16 PM   #8
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The valve will be located at the bottom of the tank. It is possible, though unlikely that it will be under the tank beneath the RV. Sometimes Thor puts a small white spigot on the outside sidewall adjacent to the tank. Shouldnít be all that hard to find but if you really canít find it just open the low point drain and turn on the pump. Itís just as fast or maybe faster than a gravity drain anyway.
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Old 04-13-2023, 01:33 AM   #9
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THOR #29427
freshwater tank drain leak

looking for some help to understand a situation with freshwater tank.
have someone trying to fill tank, and they have notice water leaking for the drain spigot.
It appears they are unable to fill the tank as the monitor shows 0% in the tank.
Where should we search to determine how to stop the water running out of the drain?

Thanks
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Old 04-13-2023, 02:08 AM   #10
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Model: ACE 27.1
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Originally Posted by hooharris@icloud.com View Post
looking for some help to understand a situation with freshwater tank.
have someone trying to fill tank, and they have notice water leaking for the drain spigot.
It appears they are unable to fill the tank as the monitor shows 0% in the tank.
Where should we search to determine how to stop the water running out of the drain?

Thanks
Where the drain enters the drain valve near the bottom of your tank.

That's as good as it gets without the Year/Make/Model of your RV.
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Old 04-13-2023, 02:59 AM   #11
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Originally Posted by 16ACE27 View Post
Where the drain enters the drain valve near the bottom of your tank.

That's as good as it gets without the Year/Make/Model of your RV.
It is a 2019 Thor Hurricane 35M
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Old 04-13-2023, 01:49 PM   #12
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State: Texas
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Different model, but on ours a panel on the bottom of the bedroom wardrobe has to be removed to access it. It is a long reach back to it but it’s along the bottom of the tank near the water pump. In the attached pic it is the red T-handle. The tankless water heater bypass valves and low point drains are also accessed via removal of the same panel, along with a couple of drawers.
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