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Old 12-15-2018, 10:16 AM   #1
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Black Tank Filling with Water

So just got back home to our Champagne after a week away, and the black tank was so full I’m amazed it didn’t overflow! I pulled the valve and it all came out with a HUGE “whoosh”! I flushed the tank before we left, so while we were gone it was filling up slowly with water! Any ideas??
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Old 12-15-2018, 10:25 AM   #2
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Easy guess is you left something on slightly. If it had been me I bet I would have disconnected all the water lines to the trailer.

My first guess would be the BT flush was left on just a little tiny bit.
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Old 12-15-2018, 10:27 AM   #3
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Quote:
Originally Posted by DKRITTER View Post
....

My first guess would be the BT flush was left on just a little tiny bit.
X2
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Old 12-15-2018, 11:47 AM   #4
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As said being as the BT flush is a stand alone plumbed system there's only 2 ways for the tank to get water; via the cleanout input port or the toilet valve and seal (both) leaking. Either way there has to be water pressure applied. Externally for the cleanout (BT flush port) or toilet (shore water port) or the water pump (holding tank) for the toilet. Seems like the OP could have figured this out.
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Old 12-15-2018, 11:51 AM   #5
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Thanks
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Old 12-15-2018, 11:55 AM   #6
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I don't know anything about your trailer but, now and then, we have questions here about units whose bathroom sink and/or clothes washer drains into the black water tank.


EDIT:
Well, maybe not washer. Washers drain to a gray tank SOOooo, in some cases, the sink drains to black for a little balance.
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Old 12-15-2018, 12:45 PM   #7
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Hmm, curious. I will test it and see, thank you Dan!!
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Old 12-15-2018, 12:47 PM   #8
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Black Tank Filling with Water

“Seems like the OP could have figured this out.”

Condescending much?

Just looking for some help if anyone had any experience with same issue. Thank you to those that offered help without putting me down [emoji1303]
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Old 12-15-2018, 01:37 PM   #9
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Black water tank

If Blackwater tank is filling has to be toilet the sink and shower all drain into gray water tank
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Old 12-15-2018, 01:39 PM   #10
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What ever you find as the cause, in the future turn off all sources of water when leaving for more than just the day.
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Old 12-15-2018, 01:54 PM   #11
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Quote:
Originally Posted by Gr8Dane777 View Post
“Seems like the OP could have figured this out.”

Condescending much?

Just looking for some help if anyone had any experience with same issue. Thank you to those that offered help without putting me down [emoji1303]
You have not established the conditions of your issue ie. connected to shore water or not, water pump cycling, toilet bowl empty etc.. It might shine some light on possibilities for cause. Didn't think it was condescending to mention that if the OP thought about it there in might be an answer. Sorry.
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Old 12-15-2018, 02:53 PM   #12
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Your Champagne should be plumbed the same as our Hathaway, ie; clothes washer and bathroom sink(s) to one gray tank, shower and galley sink to the second gray tank, and the black tank. As has been pointed out, the only way the black tank can fill is through the toilet or tank flush. I, too, recommend turning the water supply off any time you leave your site for however long. I also have stories that justify the habit of turning the water off but will only tell of one.


I have a water meter on both the city water and flush connections. Each also has a ball type hose shutoff valve. One day after I had previously dumped tanks and flushed the black (and turned it's valve off at the meter) I later went into the driver side of the basement for something and saw water everywhere! Convinced I had experienced a city water plumbing failure between the docking station or water heater and the bathroom I began investigating. Searching, I found the source to be the black tank anti-siphon valve under the vanity but couldn't get it to leak again when testing the tank flush. Turns out I had a tiny leak past the shutoff valve which wasn't sufficient flow or pressure to close the anti-siphon valve and water leaked out of it's vent out of sight from inside the trailer. I now have two new shutoff valves on the flush inlet and ALWAYS turn off the tank flush water supply when I finish flushing the tank.
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Old 12-15-2018, 03:37 PM   #13
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Geeze

Quote:
Originally Posted by Gr8Dane777 View Post
“Seems like the OP could have figured this out.”

Condescending much?

Just looking for some help if anyone had any experience with same issue. Thank you to those that offered help without putting me down [emoji1303]
Agreed, uncalled for.
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Old 12-15-2018, 04:02 PM   #14
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When on a long term private spot in N GA mountains I shut the water off and opened faucets every time we left for more than 24 hours. That pretty much prevents “stuff” from happening. Water is the RV destructor. We had a frozen line behind the toilet, hairline crack we could not see. TG I asked wife to be inside until pressurized. Her “screaming” and my “scrambling” stopped the issue very quickly. [emoji106]. $2 plastic toilet hose entry.
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Old 12-15-2018, 10:17 PM   #15
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Abbreviations

New guy question...what does OP and TG mean?
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Old 12-15-2018, 10:40 PM   #16
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I'm still curious, as to what was found to be the cause. Would think a normal Rv toilet would have filled and leaked all over the floor if the valve was leaking.
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Old 12-15-2018, 10:41 PM   #17
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I'm still curious, as to what was found to be the cause. Would think a normal Rv toilet would have filled and leaked all over the floor if the valve was leaking.
X2
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Old 12-15-2018, 10:58 PM   #18
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New guy question...what does OP and TG mean?
Craig
Original Post

Thank God
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Old 12-15-2018, 11:04 PM   #19
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Original Post

Thank God
OP can be Original PostER also... depending on context.
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Old 12-16-2018, 09:08 AM   #20
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Black Tank Filling with Water

Thanks for all the help. Found my two way shut off water hose valve had a slow leak on the blank tank flush side. Lesson learned to shut off water before leaving (stupid)! TG I seemed to have gotten home just in time before anything catastrophic happened!!

Thanks again for all the advice
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