โSep-21-2017 06:51 PM
โSep-25-2017 05:21 AM
mike-s wrote:
Not sure where you get that 1/4" as a requirement, or even typical. If you look at made-for-purpose RV blow-out plugs, the brass ones have an orifice much smaller than 1/4", and others have Schrader valves which also very much restrict flow.
It would be a very large RV to have more than a couple of gallons of capacity in the water lines. I know a single gallon will fill the lines on our (relatively modest) one with more than enough left to fill the traps. It's more volume than pressure that's needed to blow out lines - you really only need a few psi to push the water through. A 2 gallon air tank at 40 psi will deliver over 3 gallons of 10 psi air.
And really, you don't even need that - just constant flow. Open the valves one at a time starting closest to the source. After you get rid of all the constant water flow (so they just sputter), let the system pressurize, then go back and open one at a time, the air pressure in the lines will blast out most of what remains.
โSep-24-2017 07:31 AM
โSep-24-2017 07:26 AM
JaxDad wrote:Not sure where you get that 1/4" as a requirement, or even typical. If you look at made-for-purpose RV blow-out plugs, the brass ones have an orifice much smaller than 1/4", and others have Schrader valves which also very much restrict flow.garyemunson wrote:
The best tool to own is a battery powered compressor with a regulator you can set at 40 lbs.
In theory, a 1/4" air fitting running wide open, like when blowing out a water system, with the feed pressure at 40 psi will flow a little over 25 CFM.
A decent small 120 volt compressor with a 2 gallon tank might be able to make 5 or 6 CFM at 40 psi.
The only way you'd get enough volume of air with a battery powered compressor would be to fit an air tank inline with the hose and create a reservoir of pressure to give you full pressure for a much longer period of time, however you'd likely burn up the compressor in no time doing that.
โSep-24-2017 06:56 AM
garyemunson wrote:
The best tool to own is a battery powered compressor with a regulator you can set at 40 lbs.
โSep-24-2017 05:35 AM
โSep-24-2017 04:29 AM
mikestock wrote:
I do have a refrigerator ice maker that I have to disconnect ant blow all of the water from the lines. This, I would do anyway, as you never want to let that pink stuff get into your ice maker.
Besides being cheaper, I feel that this process is far easier than my old antifreeze method.
โSep-23-2017 06:41 PM
โSep-22-2017 09:32 AM
ScottG wrote:
I had AF turn to a slimey goo one year in my water system.
After that I just blew everything out. Works a lot better and faster and it's nice the next season not having the pink stuff foam everytime we run a faucet.
The only place I put AF is in the drains.
โSep-22-2017 08:05 AM
โSep-22-2017 07:16 AM
โSep-22-2017 04:51 AM
โSep-22-2017 04:30 AM
โSep-21-2017 08:39 PM
โSep-21-2017 07:56 PM