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03-28-2021, 06:18 PM
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#1
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Junior Member
Join Date: Mar 2021
Posts: 3
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Fresh tank water overflow
Hi there ,
We just bought a primetime avenger. We picked it up still winterized so we are now dewinterizing ready for spring.
We have flushed out all the anti freeze and started to fill our fresh water tank almost immediately the fresh water overflow starts to over flow. The level inside the trailer never shows full.
Are we missing a step?
Thanks
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03-28-2021, 06:44 PM
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#2
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Senior Member
Join Date: Sep 2015
Location: North Alabama
Posts: 1,140
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Are you sure it isn't the fresh water tank drain hose? That one will have a valve on the end probably. My fresh water tank overflow hose has no valve.
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2016 F350 CC Dually Powerstroke 4x4
2014 Cedar Creek 34RLSA w/Level Up
2007 HD Ultra Classic 103
USS Pyro AE-24 WestPac MM2 '71-'75
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03-28-2021, 07:11 PM
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#3
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Senior Member
Join Date: Sep 2015
Posts: 860
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I had a heck of a time filling the tank in my Forester, I don’t think it’s vented properly and the air would “burp” back out while filling.
But this Secure-fill solved the problem, it lets the air vent out while you fill.
__________________
Brian
2015 Forester 2801QS GTS
TOAD-Hobie Mirage Pro Angler 14 kayak and Yamaha Zuma 50cc scooter on a custom trailer.
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03-28-2021, 07:47 PM
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#4
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Junior Member
Join Date: Mar 2021
Posts: 3
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I tried to upload a pic - there are 2 hoses one has a value and one doesn’t . As we attached the hose to fill the fresh water tank after a couple of mins the one with out the value is pouring with water.
The tank levels show not full.
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03-29-2021, 07:05 PM
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#5
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Camping with Labs
Join Date: Jan 2019
Location: Jarrettsville, MD
Posts: 264
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Quote:
Originally Posted by Wallace481
I tried to upload a pic - there are 2 hoses one has a value and one doesn’t . As we attached the hose to fill the fresh water tank after a couple of mins the one with out the value is pouring with water.
The tank levels show not full.
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Congratulations on the new rig! The pic didn't upload, and so far the thread is a bit confusing. Not sure what you mean by 2 hoses, one with a value and one without? The fresh water tank fill set-up for all the TTs we have owned was simply a gravity feed tube leading to the fresh water tank, with a small overflow "hose" right below that tube. If you meant "valve," as SlowrideHD mentioned, that sounds like the fresh water tank drain or maybe the low point drain; and if the fresh water tank drain valve is open the tank will not fill all the way unless your water pressure is so high that the volume in exceeds the volume out (in which case you may be risking damage to your pipes if you ran that high pressure into the pipes to flush the RV antifreeze during dewinterization). A pic will help, but more information will probably be needed to help figure out what is going on.
__________________
Chris, Paula, & camping Labs, Shasta (RIP 8/10/20) & Cammie
2005 Yukon XL 2500 with 8.1 Engine, Allison Transmission, and 3.73 Axle Ratio
2019 Rockwood Signature 8335BSS with Hensley Arrow Hitch
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03-29-2021, 08:24 PM
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#6
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Senior Member
Join Date: Jan 2018
Location: Raleigh, NC
Posts: 9,574
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Just to expand...
Quote:
Originally Posted by CGK
Congratulations on the new rig! The pic didn't upload, and so far the thread is a bit confusing. Not sure what you mean by 2 hoses, one with a value and one without? The fresh water tank fill set-up for all the TTs we have owned was simply a gravity feed tube leading to the fresh water tank, with a small overflow "hose" right below that tube. If you meant "valve," as SlowrideHD mentioned, that sounds like the fresh water tank drain or maybe the low point drain; and if the fresh water tank drain valve is open the tank will not fill all the way unless your water pressure is so high that the volume in exceeds the volume out (in which case you may be risking damage to your pipes if you ran that high pressure into the pipes to flush the RV antifreeze during dewinterization). A pic will help, but more information will probably be needed to help figure out what is going on.
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Wallace, what they are telling you is that there are TWO or THREE valves under the trailer. Usually three: Cold water low point, Hot water low point, and Fresh Water drain. The fourth tube is the overflow. Sometimes the low points are screw-on pipe plugs or pipe caps.
We are wondering if you have closed a low point drain and not closed the fresh water tank drain. Got to get on your back and do a more complete inspection.
__________________
Larry
"Everybody's RV is not like your RV."
"Always take pictures with the button on the right."
"Always bypass the water heater before opening the low-point drains."
Sticks and Bricks: Raleigh, NC
2008 Cherokee 38P: at Ivor, VA permanently
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03-29-2021, 09:22 PM
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#7
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Junior Member
Join Date: Mar 2021
Posts: 3
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Pic
Thank you all for your responses.
Our low point drains are no where near the fresh water intake we made sure to double check those.
We emptied the fresh water tank and refilled it using a measuring gage to measure how many gallons are going in, we meaured 20, then the water comes out the over flow pipe. Manufacturer states the tank should hold 40 gallons !
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03-31-2021, 09:35 PM
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#8
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Junior Member
Join Date: May 2019
Posts: 6
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I don’t like suggesting this, but any chance your fresh water tank wasn’t completely emptied when it was winterized and you have a large ice cube in the tank. I ask because I saw what looks like a skiff of snow in one of your pic’s. Maybe try turning on your tank heaters overnight and see if more drains out in the morning.
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04-01-2021, 09:39 AM
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#9
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Camping with Labs
Join Date: Jan 2019
Location: Jarrettsville, MD
Posts: 264
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Good picture, and good move to measure the input so you know at what point you are seeing drainage. You didn't mention what model you have, but it probably doesn't matter in this case. For future reference, you can add that information in your profile or as part of your signature. Yes, that does look like an overflow tube/vent of some sort, although I'm not accustomed to seeing them with a 90 degree fitting, and mine isn't a separate pipe at the bottom of the TT. And apparently you aren't the only ones to have this challenge - I found this on another forum: https://arewethere-yet.com/wordyexpl...=1525289869765. I am not recommending this solution - just showing you what someone else did to address their issue. There have also been posts on this Forum about the discrepancy between advertised tank size and measured capacity. One thing to remember is that the stated capacity includes the 6 gallon water heater, water in the pipes, etc. But that only takes your measured capacity up to about 27 gallons.....still a pretty big gap. The overflow/vent tube is usually attached to the tank near the top, but not at the top, of the tank, so especially if your TT is on uneven ground (doesn't look that way from the picture, but difficult to tell for sure), that could account for some of the difference. If you are filling the tank at high pressure (not recommended), there is a chance you are creating a siphon effect to drain the tank. And the tank status lights are notoriously suspect in terms of accuracy. There have also been posts about debris in the tanks of new TTs, although I can't imagine that would take up gallons of space under the worst of circumstances. So where does that leave you? Probably with less capacity than you thought, but maybe not as limited as you are seeing so far. If it were me, I'd try emptying the tank again, moving the TT to fairly level ground if it is not already "level-ish", and slowly refilling the tank, measuring the input. When it starts to overflow, add 6 gallons that will go in the hot water tank plus maybe a gallon that could fill the pipes, and that's your working capacity. This does assume no ice in the tank, as FlatlanderSK mentioned or debris from the manufacturing process. As you can see from the link I provided, some fellow RVers are then losing some of their fresh water on the road due to hills, curves, etc. Perhaps someone who has actually experienced this issue will reply, giving you more options. If the TT is under warranty, you could try taking it back to the dealer, but it has been my experience that if they don't find anything wrong with the TT they may charge you for looking into it for you. Good luck, and happy camping!
__________________
Chris, Paula, & camping Labs, Shasta (RIP 8/10/20) & Cammie
2005 Yukon XL 2500 with 8.1 Engine, Allison Transmission, and 3.73 Axle Ratio
2019 Rockwood Signature 8335BSS with Hensley Arrow Hitch
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04-06-2021, 11:05 AM
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#10
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Junior Member
Join Date: Mar 2021
Posts: 5
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Similar issue
2017 REAl Lite 19RLS
When I try to fill fresh water, it overflows from the fill point when the tank is about 1/3 full. Nothing else is connected. I am baffled.
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04-06-2021, 01:21 PM
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#11
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Senior Member
Join Date: Nov 2020
Location: Michigan
Posts: 402
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I'm going through this on my rig.
Its my understanding that the fresh water tank is sized based on outside dimensions. So in my case the 100gal tank isn't 100gal. Looking at different tank images the fill vent is mounted on the side of the tank thus preventing a full fill due to the vent line location. Some fast math makes me think its more like 86 to 96gal depending on wall thickness and any air gap.
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2021 Wolfpack 315Pack12
2014 Ford F350 6.7L Diesel
2019 Indian Chieftain Dark Horse
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04-07-2021, 10:32 AM
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#12
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Junior Member
Join Date: Mar 2021
Posts: 5
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REsolved fill overflowing
The overflow line on my camper also serves as the vent to the tank. It was clogged, not allowing air to escape. I unclogged it allowing air to escape and was able to completely fill my fresh water tank.
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04-07-2021, 10:53 AM
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#13
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Senior Member
Join Date: Nov 2020
Location: Michigan
Posts: 402
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Quote:
Originally Posted by asr524
I'm going through this on my rig.
Its my understanding that the fresh water tank is sized based on outside dimensions. So in my case the 100gal tank isn't 100gal. Looking at different tank images the fill vent is mounted on the side of the tank thus preventing a full fill due to the vent line location. Some fast math makes me think its more like 86 to 96gal depending on wall thickness and any air gap.
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I did a test yesterday with a flow meter. With my RV level, water started to flow out of the overflow tube at 86.8gal. I installed a valve and closed off the overflow tube and was able to fill to 109gal before I decided to stop.
__________________
2021 Wolfpack 315Pack12
2014 Ford F350 6.7L Diesel
2019 Indian Chieftain Dark Horse
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04-07-2021, 11:03 AM
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#14
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Senior Member
Join Date: Jan 2018
Location: Raleigh, NC
Posts: 9,574
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Did you check?
Quote:
Originally Posted by asr524
I did a test yesterday with a flow meter. With my RV level, water started to flow out of the overflow tube at 86.8gal. I installed a valve and closed off the overflow tube and was able to fill to 109gal before I decided to stop.
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Did you check to see if the tank was bulging when you stopped?
__________________
Larry
"Everybody's RV is not like your RV."
"Always take pictures with the button on the right."
"Always bypass the water heater before opening the low-point drains."
Sticks and Bricks: Raleigh, NC
2008 Cherokee 38P: at Ivor, VA permanently
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04-07-2021, 11:44 AM
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#15
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Senior Member
Join Date: Nov 2020
Location: Michigan
Posts: 402
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Quote:
Originally Posted by Larry-NC
Did you check to see if the tank was bulging when you stopped?
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That's one of the reasons why I stopped
__________________
2021 Wolfpack 315Pack12
2014 Ford F350 6.7L Diesel
2019 Indian Chieftain Dark Horse
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08-22-2021, 09:27 PM
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#16
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Junior Member
Join Date: Dec 2019
Posts: 1
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Fresh water overflow
I have the same problem with my Avenger 27rbs. When I fill the fresh water tank water comes out the overflow for days. The amount of water that comes out the overflow is crazy. Why do we not get any instructions on proper way to fill it and what to expect? I will get a flow meter and spend some time trying to understand how and why it dumps so much water back out the overflow and it is not the drain valve. I know the difference.
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08-22-2021, 10:02 PM
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#17
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Site Team
Join Date: Jan 2007
Location: Goodyear, Arizona
Posts: 33,775
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Quote:
Originally Posted by dannull
Why do we not get any instructions on proper way to fill it and what to expect?
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Because the vast majority of RV manufacturers only provide a generic owners manual with no model-specific nor brand-specific information.
Not saying it's right but what has been the standard for over 20 years at least.
__________________
Dan-Retired California Firefighter/EMT
Shawn-Musician/Entrepreneur/Wine Expert
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package
4pt Equal-i-zer WDH and 1828lbs of payload capacity
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08-22-2021, 10:30 PM
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#18
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Senior Member
Join Date: Feb 2020
Location: Northern Foothils CA
Posts: 1,420
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Quote:
Originally Posted by dannull
I have the same problem with my Avenger 27rbs. When I fill the fresh water tank water comes out the overflow for days. The amount of water that comes out the overflow is crazy. Why do we not get any instructions on proper way to fill it and what to expect? I will get a flow meter and spend some time trying to understand how and why it dumps so much water back out the overflow and it is not the drain valve. I know the difference.
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I use this https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
First use, just slowly fill and note the fill volume. From then on just fill to a few gallons shy of full. Easy
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2021 2205S Rockwood Minilite
2019 F 150 Lariat 3.5 Eco Fx4 Max Tow
Equal-i-zer WDH, 1809 lb payload
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05-17-2023, 07:21 AM
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#19
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Member
Join Date: Aug 2022
Location: WNY
Posts: 95
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Reviving an old thread because I am going through it right now with my primetime avenger 27dbs. We only had it for one trip last year and we ran out of water pretty quickly considering we only used water for hand washing and brushing teeth. Last year when I filled it I noticed that from the time we filled it at the campground to the time we got it parked we lost a lot of water out of that same low style overflow tube and I just figured that was the issue.
Fast forward to last weekend I don't have a water meter but what I did was time how long it took me to slowly fill a 5 gallon jug then multiply that by how many gallons my fresh water tanks holds. It should have taken 20 min to fill the fresh water tank full but water was coming out the low overflow in about half that time.
After reading this thread I will now have to check the vent pipe near the fill to make sure it's not plugged but did anyone ever find any other solution to completely fill the fresh water tank? My only other thought was to put a valve on the overflow and as soon as water starts to come out the overflow to shut the valve to minimize how much water we lose.
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05-17-2023, 07:32 AM
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#20
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Senior Member
Join Date: Dec 2012
Location: Louisville, KY
Posts: 1,385
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I added a 1/4 turn valve to the overflow on my Imagine. Without it there would be a siphon effect as I was driving down the road with a full tank. With it I would have no problem.
You might also check the fill line going to your tank. Last season 2 campers in our group were having trouble filling the water tanks. 1 was due to the vent line being kinked and the other was due to the fill line being kinked.
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'22 Rockwood 2608BS
Previous '17 Grand Design Imagine 2800BH, '13 Rockwood Roo 21SS
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