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Old 08-15-2015, 09:32 AM   #11
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I have a brass hose adapter with a ball valve. The key is the process. So, when I'm breaking camp, and after the tanks have been drained, I turn the water off, then unhook the fresh water hose from the trailer, and connect it to the adapter with its ball valve closed. Then, I open the hose bib and pressure the water hose, THEN I open the ball valve to begin the black tank cleaning with an open drain valve. I let this run for 3-5 minutes.
Then close the ball valve, close the hose bib, then remove the water hose. Yes it's still pressured. I break the hose connection at the campsite hose bib first to drop the pressure.
One of the campgrounds we frequent does not have sewer hookups. They have dump stations. These dump stations have a dedicated overhead fresh water hose that can be pulled down for flushing the black tanks. (I wear gloves) You have to be careful with water usage at this campground, but otherwise it's a fantastic place. They do have clean bathhouses, and although it's a little more of a pain, I really don't mind. It's just a short bike ride away to a hot shower, and saves a lot of grey tank capacity. Sorry for getting off topic...
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Old 08-15-2015, 10:24 PM   #12
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Originally Posted by Cool Canuck View Post
I'm amazed that some folks even use the same water spigot for both hoses.
I bet if you looked inside you will find your toilet is hooked up to the fresh water line.
Yes it is, for flushing, just like at your home. Black tank cleanout is a dedicated, self contained plumbing network and is not interconnected with the fresh water system in any manner.
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Old 08-17-2015, 10:02 PM   #13
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Yes it is, for flushing, just like at your home. Black tank cleanout is a dedicated, self contained plumbing network and is not interconnected with the fresh water system in any manner.
Look down at the other end of the hose you use for flushing. What is it connected to? The same water spigot your fresh water hose is hooked up too? Sorry, I just think some folks get way too anal about some of this stuff. Modern codes have put anti siphon devices on all water lines connecting to sewer. You couldn't suck black water up from you tank flush if you tried.
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Old 08-17-2015, 10:16 PM   #14
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I use a "Y" connector and a dedicated black hose for clean out. Our new SolAire has the dedicated tank cleaning port (that's a switch) and I use a dedicated hose. It is the same hose I used with my "Magic Wand" for cleaning out the black-water tank.
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