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Old 07-26-2008, 09:02 PM   #1
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Join Date: Jul 2008
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black water tank flush

I have a Sierra travel trailer. It has a black water flush that you hook upto a hose to flush out the tank. We shut the drainage valve and filled the the tank. Problem is we left it filling and filling. Then we hear this pop. Then water was comming out of the ceiling. Did we pop something? No water on the roof. Some water on the ground under the valve and still dripping alittle. Is this a problem in the walls with a blown pipe? Or not to worry about thing?
Thanks for your input in advance.
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Old 07-27-2008, 07:46 AM   #2
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Thats no fun, but on every bathroom, even in your home, there is a vent, so the gasses ( no pun) are relased, and it sounds like the vent over flowed, but its funny there is nothing on the roof top....unless you caught it in time. Hoep all works out ok....
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Old 07-27-2008, 05:52 PM   #3
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Location: Southwest Alabama
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Originally Posted by Dawn View Post
Problem is we left it filling and filling. Then we hear this pop. Did we pop something?
Dawn, Sorry to hear about your woes. Yes, something "popped". Hopefully it wasn't the tank.

Originally Posted by Dawn View Post
Then water was coming out of the ceiling. ... No water on the roof.
This really bothers me. Sounds like the vent pipe came apart up high and dumped water in the ceiling. It should have came out on the roof. You'll definitely want to have this fixed and cleaned throughly. It was most likely a joint that was not glued. Part of the problem could have been a plugged vent cap.

Good luck getting this corrected.
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Old 07-28-2008, 09:44 PM   #4
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Vent cap or seam in tank.hope it was just a cap on your vent or maybe a part on the tornado rinser that is in your tank, would have to remove it from tank to determine this.

I have two tornadoes, one on black and one on galley. i just keep discharge valves either totally open or partially closed during the water flush and flush for about five to ten minutes, the tanks can rupture or a geyser can occur. i just let the water flush using the tornado until the water is clear as viewed in the discharge wast line clear coupling on the waste line.
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black water

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