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Old 09-01-2015, 01:02 PM   #11
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I blow out the water fill and black tank flush inlets when I blow out the lines when winterizing. They froze once, no long term damage but could not fill on board fresh water tank until it thawed.
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Old 09-01-2015, 01:10 PM   #12
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Never have winterized my black or grey tanks. I drain them that's it. I blow air thru my water lines and fixtures and drain water tank. Our 5er doesn't have pee traps so I don't pour RV antifreeze down the drains.
How is it possible to not have P traps. None in my direct gravity drop toilet, but without a P trap, or spring loaded valve like the toilet, wouldn't the sinks stink constantly?
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Old 09-01-2015, 01:32 PM   #13
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... Our 5er doesn't have pee traps so I don't pour RV antifreeze down the drains.
I am surprised you have no P-traps. There should be a P-trap below each sink and the shower/bath tub. With no P-traps you would have odors returning to the camper living area. The toilet does not have a P-trap because the flush valve closes off the pipe and tank from the toilet.
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Old 09-01-2015, 03:30 PM   #14
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As many have said I use a compressor to blow out all the water lines if it's going to freeze, if it's going to be a hard freeze I'll winterize.
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Old 09-01-2015, 03:46 PM   #15
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My plan is the best......I take my black tank to Florida early in December and come back to Kentucky when it is too warm to stay there, late April or early May!
Travel safe
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Old 09-01-2015, 04:36 PM   #16
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My plan is the best......I take my black tank to Florida early in December and come back to Kentucky when it is too warm to stay there, late April or early May!
Travel safe
Me too!
Black tank flush systems are self draining by design.
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Old 09-01-2015, 04:46 PM   #17
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I pour a few gallons of antifreeze into the black and grey tanks after I drain them. It is best to make sure that wherever there is water, you replace it with antifreeze.

Vin.
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Old 09-01-2015, 05:11 PM   #18
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One that almost everyone forgets: If you have a residential refrigerator, remove the inside water filter. I didn't know about this and it froze so hard this past winter that it shattered the plastic casing on the filter. Then, the first time we hooked up to shore water this Spring, it came pouring from under the door which made it look like it came from under the frig itself. It took a while to find the source inside the frig. Needless to say, a lot of the floor got a good cleaning.
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Old 09-01-2015, 05:17 PM   #19
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I am surprised you have no P-traps. There should be a P-trap below each sink and the shower/bath tub. With no P-traps you would have odors returning to the camper living area.
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Old 09-01-2015, 07:39 PM   #20
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For years I just blew out my water lines, then 1 time, my shower valve froze, broke and I had no water for the weekend. Since then, I always run the pink stuff through the lines. My Rockwood Owners manual recommends adding 1 gal of anti freeze to each tank. It's cheap insurance, keeps the seals wet.
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