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Old 10-12-2018, 02:18 PM   #11
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blow it out with air, ... I don't/never have, used the anti freeze, ... we're able to camp several times during the winter, and using the anti freeze would require, flushing it out of the lines every time we want to use the trailer for a weekend and then redoing it when we get back home, ... much less trouble for me to hookup my air line, blow 20-30 lbs of air thru the whole system, plus the black tank flush line and the outside shower lines, until all water is removed, ...

"if there ain't no water in the lines, there ain't nothing there to freeze" ....
X-2...see my later diatribe.
If you can winterize a sprinkler system with air, you can winterize an RV with air.
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Old 10-13-2018, 08:59 AM   #12
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You can buy a hand pump that sucks from the bottle and has a male hose connector on the outlet. They are made for pumping anti freeze into the city water and fresh water tank. It takes about 10 pumps to empty a gallon bottle of anti freeze. You can also use it to pump pink into the black tank flush. Although I do not like to use anything that I connect to the water system to anything connected to the black tank. So I bought a second one to use for that. They are cheap but do the job. Makes winterizing quick and easy and all from the outside. Also easy cheap way to add fresh water to the tank if you are boon docking.
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Old 10-13-2018, 09:13 AM   #13
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No need for a compressor to blow out lines. A good hand bicycle pump works fine. Been using one for years to blow out lines including the black tank flush.
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Old 10-15-2018, 06:40 AM   #14
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Originally Posted by markb422 View Post
You can buy a hand pump that sucks from the bottle and has a male hose connector on the outlet. They are made for pumping anti freeze into the city water and fresh water tank. It takes about 10 pumps to empty a gallon bottle of anti freeze. You can also use it to pump pink into the black tank flush. Although I do not like to use anything that I connect to the water system to anything connected to the black tank. So I bought a second one to use for that. They are cheap but do the job. Makes winterizing quick and easy and all from the outside. Also easy cheap way to add fresh water to the tank if you are boon docking.
I have one of those pumps and it works good for flushing the black tank flush and the city water connection. I also use the onboard pump to do the rest of the winterizing and to make sure that there isn't any water in the onboard pump.
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Old 10-15-2018, 07:20 AM   #15
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So it suggested we blow 30psi of air via adapter to the black water flush to make sure no water is in the black water flush system? I assume the black water waste valve needs to be open?
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Old 10-15-2018, 08:10 AM   #16
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X-2...see my later diatribe.
If you can winterize a sprinkler system with air, you can winterize an RV with air.
And every spring I listen to my friends, neighbors and co-workers talk about replacing heads, finding broken lines due to freezing during the winter.
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Old 10-15-2018, 08:21 AM   #17
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And every spring I listen to my friends, neighbors and co-workers talk about replacing heads, finding broken lines due to freezing during the winter.
Are they doing it with a pancake compressor? Biggest issue is air volume to pump recovery, I do it with a 60 gallon tank @ 50lbs pressure and have had no issues. (Watch cause i opened my mouth im gonna have 1 lol).
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Old 10-15-2018, 10:54 AM   #18
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Old 10-15-2018, 10:58 AM   #19
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So it suggested we blow 30psi of air via adapter to the black water flush to make sure no water is in the black water flush system? I assume the black water waste valve needs to be open?
The valve doesn't really need to be open. You are just blowing air and maybe some misty water into the tank. I just did mine yesterday and just ran it for a few seconds.

It's possible that you have a short run of hose from the inlet to the tank, but the air should get most of it out.
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Old 10-15-2018, 11:56 AM   #20
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Are they doing it with a pancake compressor? Biggest issue is air volume to pump recovery, I do it with a 60 gallon tank @ 50lbs pressure and have had no issues. (Watch cause i opened my mouth im gonna have 1 lol).
I know the neighbor has a 50 gal on wheels that he uses, had two heads broken this spring. Couldn't say what the others are using. I do know 2 have a company do it in the fall. So....did you knock on wood after saying that ? I always do...but it only helps sometimes.
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