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Thread: Blew up black tank!
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07-01-2021, 06:14 AM #11
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As a newbie, and after watching and listening to horror stories of overflowing the black water tank creating a mess, I typically wait a max a 3 minutes using the blank tank flush before opening the gate. Safe, but I am not sure this is doing much good. The water meter you referenced seems like a great tool to use. This may seem like a silly question, but if my black water tank is 37 gallons, how much should I fill using the black water flush before stopping? Go the full 37 gallons? Or a few less like 32?
Mitch and Alisa Frank
2020 Imagine XLS 22 MLE
2020 RAM 2500 Diesel
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07-01-2021, 06:50 AM #12
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I usually let it run while I'm dumping, until the water runs mostly clear, then I'll close the dump valve and add 10 gallons, turn off the water, open the dump valve and let it drain. Then I'll close the valve and add 6 gallons and the black tank treatment. Then move on to my grey tanks.
Sent from my phone using TapatalkMark & Mary. Full-timing across the USA (and Canada)!
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07-01-2021, 07:00 AM #13
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Me also. Before traveling I put 5 gallons into the empty fresh water tank case I need to use the bathroom when traveling.
I haven’t used it when flushing the black tank. I just stand there and set the timer on my Apple Watch for 2 minutes then open the black valve, after it’s drained close it for another 2 minutes and repeat until flow out the pipe is clear.Jerry & Linda
Emma & Abby our Mini Golden Doodles & JR our Amazon Parrot
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07-01-2021, 07:18 AM #14
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I have not looked at where the spray nozzle(s) on my 2015 323BHS are, but on our last camper (a Forest River) the sprayer was only a few inches up the side of the tank. Maybe someone who has seen their spray nozzle location can comment, but if it is similar to where my last camper had the nozzle installed then I would suspect any more than 1/2 full is probably not increasing the effectiveness any.Jake and Leah, our two boys, and our Lab
Based out of North Carolina, currently in Henderson, TX
2013 RAM 2500 6.7L 4x4
2015 Reflection 323BHS
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07-01-2021, 10:01 AM #15
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07-01-2021, 10:05 AM #16Rob & Nikki + Cloverfield
2020 Grand Design Solitude S-Class 3350RL
2015 RAM 3500 Longhorn Laramie Crew Cab, Long Bed, 4x4 Dually Cummins/AISIN
Mountains of Pennsylvania
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07-02-2021, 10:50 AM #17
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Better than having it fall out on I95! We now have a composting toilet. After using it since March if I bought a new RV tomorrow I would put a composting toilet in.
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07-07-2021, 03:09 PM #18
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I thought you could not run the black tank flush with the valve closed?
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07-07-2021, 03:24 PM #19
General advice is to not do so. Plenty of us seasoned folks do.
I had a nice treat over the holiday weekend camping at Ives Run. Newbie forgot the black tank flush was on while cooking breakfast. It came out the roof vent. Guess where it flowed?!? The wife was fuming too! I tried to convince them to be thankful that the toilet seals held on their new Forest River as an interior cleanup is way worse than scrubbing the roof and awning and throwing our breakfast and sterilizing the cooktop.Rob & Nikki + Cloverfield
2020 Grand Design Solitude S-Class 3350RL
2015 RAM 3500 Longhorn Laramie Crew Cab, Long Bed, 4x4 Dually Cummins/AISIN
Mountains of Pennsylvania
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07-07-2021, 03:56 PM #20
[QUOTE=UGA4040;380575]I thought you could not run the black tank flush with the valve closed?
OK, sorry for asking a dumb question here, but want to ensure I understand correctly to avoid a similar fate.
1) I would expect the tank to be engineered to support the weight of a full tank....otherwise what is the point. Is the suggestion here that the tank expanded and the supports failed due solely to the weight of the full tank? Are the grey tanks prone to the same fate? Why does filling the fresh water tank to overflow (which I do) not result in the same consequence?
2) My practice has been to leave 5-10 gal of water in the black tank after I empty it as most people subscribe to. I achieve this by running the black tank flush system with the discharge valve closed. I use the exact same flowmeter as Jakev383 uses for fresh water to monitor how much water I put into the black tank. I assume I am safe to leave the valve closed as I monitor the volume of water and assume the tank vent does not allow the tank to pressurize. You know what happens when you assume, so just want to ensure my procedure is sound...as long as I dont walk away and forget about it.2020 Chev Silverado 2500 (6.0L Gas)
2021 Reflection 303RLS
Morryde Safe-T-rail install issues
Today, 12:55 AM in Mods and DIY