Bumpyroad wrote:
Gdetrailer wrote:
Lantley wrote:
1buda wrote:
I just blew air through out the entire water system, filled all the traps with antifreeze. We did get our first snow fall about 2". I plan on going out for Thanksgiving weekend. I think I should be good?
If you did not add antifreeze to your water lines you are taking a chance.
I also am planning to go out for Thanksgiving. I use a space heater when temps. dip below 32º. I am in a milder climate than Pittsburgh but I am also taking a chance.
The only foolproof way to avoid problems is to use antifreeze.
No, that is not true, blowing the water out and opening the low point drains works extremely well. In fact there are thousands (or even tens of thousands)of solar heating systems which USE THE SAME PRINCIPLE as blowing out the lines.
Those systems are call "drain back" systems. When the panel temps dip below the the tank temps the pump shuts off and the ENTIRE panel array simply drains back into the tank VIA GRAVITY. SOME water will stay behind but what does is very small and will allow space for the ice to expand. Simple but yet effective without the need for antifreeze (could you imagine how much it would cost to fill 500 or even 1000 gallon water storage tank full of antifreeze?).
I HAVE been doing it this way for 15 yrs and yet to have any broken lines AND I am about 1 hr NORTH of the OPs location so I often get clobbered by lower temps than Pittsburgh.
one "fact" you seem to have omitted, the solar heating system as well as systems in cabins that are designed to be drained out, are in fact constructed so that piping, elbows, dips, etc. are all self draining. to rely on a slapped together RV water system to be identical is foolish, IMHO.
you may not have a low spot in a run but you won't learn of it until it is too late. so save $4.00, and as Clint sez, "do you feel lucky"?
bumpy
:R
Your RV system IS designed well enough to use AIR only after all that IS why they INCLUDE "low point" drains.
Yes, the pipes may not be straight or angled to the drain points but the drain point are PLACED in such a away that more than 99% of the water will be blown out. Generally you only need 60%-70% of the water to be removed to make enough room for the water to expand. After all it is the high expansion ratio of water that does the damage. Give it some room and the water as it freezes doesn't damage anything.
In reality, if you allow the air to push the water out, then close the faucet, wait a minute then open again repeating that a couple of times removes nearly all the water in the system. Pausing in between allows water to "pool" in the low places and the sudden opening pushes it out. Finishing with opening the low point drains and it is a no brainer.
Keep in mind just because you put pink stuff in doesn't mean you won't have broken lines. You have to push out ALL the water, the problem is the pink stuff you buy in the gallon jugs is PREMIXED to 50/50. The pink stuff actually absorbs water while you are putting it in. This actually weakens the solution and it WILL freeze, you have NO WAY of measuring the strength so you have to waste a considerable amount in the process. So basically it is a GUESS at best.
If you recycle it for next year you are really taking chances since it WILL be diluted and running it again further dilutes it.
Something else to be concerned about, you also get the CHANCE of JUNK pink stuff. I have had that happen with windshield washer fluid that FROZE SOLID even at temps as low as 30 degrees.
Your choice...