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Old 09-18-2015, 05:49 PM   #1
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Blowing out water-lines with compressed air!

Could someone explain how you know if you have gotten enough water out the lines when using the compressed air method? Isn't it true that the traps will continue to hold water that constantly recycles giving the appearance that there is still water in the lines, but actually it's only in the trap.
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Old 09-18-2015, 05:57 PM   #2
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Water doesn't recycle from the traps. You will get almost total air coming out of your faucets when the lines are clear. If you are extra cautious, you can add antifreeze to the lines after blowing them out. Make sure you add antifreeze to all traps and blow out your outside shower.

Good luck,
Don
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Old 09-18-2015, 07:25 PM   #3
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We blow the air until they mostly stop sputtering and the taps have mostly air coming out of them. I figure anything left behind has room to expand if it freezes.

I have done both afterwards- added pink antifreeze and gone without. I prefer to have it, as I feel safer. But lots of people don't do it.
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Old 09-18-2015, 07:41 PM   #4
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I use the compressed air. I blow out the lines by checking to insure that all the water is out by using my hand or a paper towel under the faucet. If paper towel or hand gets wet, I close the faucet, turn air back on for a couple of minutes, open the faucet and repeat again until all water is out. After all the water is blown out, then I add a couple of cups of antifreeze to the traps.
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Old 09-18-2015, 07:55 PM   #5
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I do the "Belts and Suspenders" method...Blow and Pink. You get 99% of the water out, and what is left, isn't enough to expand and cause damage. But, to be safe, I add the pink.
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Old 09-19-2015, 01:04 PM   #6
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Quote:
Originally Posted by dmdrj5 View Post
Water doesn't recycle from the traps. You will get almost total air coming out of your faucets when the lines are clear. If you are extra cautious, you can add antifreeze to the lines after blowing them out. Make sure you add antifreeze to all traps and blow out your outside shower.

Good luck,
Don
You forgot 1 thing dmdrj the toilets put a 1/2 gal in each one to protect them and in the grey also just for good measure.
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Old 09-19-2015, 01:11 PM   #7
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Quote:
Originally Posted by amaziing1 View Post
Could someone explain how you know if you have gotten enough water out the lines when using the compressed air method? Isn't it true that the traps will continue to hold water that constantly recycles giving the appearance that there is still water in the lines, but actually it's only in the trap.

Thats why you put pink in the drain enough where it also get some in the grey tank some in toilet enough when you flush it gets in the black tank too.
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Old 09-19-2015, 01:33 PM   #8
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Don't forget to blow out the black tank rinser. It can hold water in low spots.
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Old 09-19-2015, 02:16 PM   #9
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I just use air. Blow all lines twice. No problems

Remember to step on toilet pedal too
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Old 09-19-2015, 02:40 PM   #10
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I open one faucet at a time to get maximum air pressure in that line.
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