Sully2
Cincinnati
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Joined: 01/20/2003
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PapPappy wrote:As mentioned....if the valves are open, it's not really all that critical....but if you forget to open a valve, you are at least safe with 40 psi.
You will do better with more volume than pressure.....so if you have an air tank, it will help...
Go and look up the bursting strength of that plastic plumbing.....it'll suprize you.
I normally use 40-50 psi...but forgot to reset my regulator once and socked 120 psi to it.....didnt harm a thing. I DONT recommend that though...
2000 Country Coach Allure; Cummins ISC 330 HP; 71/2 - 8 MPG regardless
2002 Jeep Liberty
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427435
Rochester, Mn
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Joined: 11/12/2005
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Deen wrote:RJL wrote: After reading this I bet there is. Interesting.
Thanks again
Bob And then you've got to wonder how much more is left even at 70 psi!
Due to the number of postings here every spring by owners that blew out the lines and now have broken pipes I'll stick with antifreeze!
That's the third time in the last month you've made that claim about owners posting in the spring about frozen waterlines. I don't recall any such postings------how about a link???
That's not to say it couldn't happen, if enough air pressure/volume wasn't used. With the method I've detailed, you get plenty of volume without too much pressure buildup in the water lines.
Mark
2000 Itasca Suncruiser 35U on a Ford chassis
2003 Ford Explorer toad with US Gear brakes,
ReadyBrute tow bar, and Demco base plate.
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garry1p
Geeville, MS
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Joined: 08/12/2004
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I also have not seen anyone post an "OH NO, my water line froze after being blown out".
I use 40/45 and never had a problem just for the heck of it I think I will go back and run 100psi and see if I can get any more water out.
Will let you know how that turns out.
Garry1p
1990 Holiday Rambler Aluma Lite XL
454 on P-30 Chassis
1999 Jeep Cherokee sport
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haydoracin
north central, Illinois
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Joined: 03/09/2002
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I made an adaper that goes into the freshwater hook-up that has an adjustable valve and pressure guage with the air hose quick connect so that I know exactly what the pressure is entering the MH and can turn the air on and adjust it accordingly.
I too have been using this method for the last six years in northern IL with no problems. Got to -30 degrees last winter and though it wasn't quite that cold in the MH garage it is not heated or insulated so I know it was well below zero.
This was on a 1984 Pace Arrow. We now have a 1994 Southwind. Haven't winterized yet and haven't decided which method to use yet. Pumping the "pink stuff" through the system would be a lot easier with the Southwind having all the necessary by-pass valves.
Hayden & Jan
1994 Southwind 33L P-30 454
1998 Chevy Tracker 4x4 auto
Mytzi (Mini Schnauzer) OTY (Mini Dachsund)
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wandering1
Texas
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Joined: 06/18/2002
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I have always used a 12 volt air compressor from WM and it does a great job. Just make sure you have all the faucets and hot water drain open.
HR
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crawford
Dandridge Tenn.
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Joined: 03/22/2006
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My plastic pipe is rated at 120 PSI and I push water from my pipes with 80 PSI I have never ever blown out parts of my pipe and even if you don't get every drop out the little if any wount harm anything because it has plenty of room to expand its not like having the pipes loaded with water and freezes with no place to go.I do put the pink stuff down the P traps of coarse.
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Don Don
Pleasant Grove, AL {Suburb of Birmingham}
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Joined: 05/21/2005
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womps wrote:Just connect it to the same water pressure regulator you use on your coach and it will restrict the amount of air pressure the same way it does with water. You can buy the correct connections at most hardware stores.
Huh? One's liquid and one's air. Not to sure it works that way.
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Bigburd
Tennessee
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Joined: 12/07/2006
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Always use 45 psi to blow out the lines then follow up with antifreeze. Also while blowing out the lines I shut off the compressor and monitor the pressure gauge for at least an hour to check for leaks.
07' Ford F-250 SD 6.0L
08' Keystone Sprinter 250 RBS
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womps
Olds
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Joined: 08/22/2008
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Don Don wrote:womps wrote:Just connect it to the same water pressure regulator you use on your coach and it will restrict the amount of air pressure the same way it does with water. You can buy the correct connections at most hardware stores.
Huh? One's liquid and one's air. Not to sure it works that way.
I have a connection that screws into a water faucet fitting to blow out my under ground irrigation lines. I take this same fitting and connect it to my coach water inlet which has the water regulator on it. This restricts the air pressure to 50lbs just like it restricts the water to 50 lbs. I got this info from the dealer and winterized coach this way. Works 100%. The regulator activates on pressure. It doesn't know the difference between 50lbs air or 50lbs water.
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Love retirement
Harrison, Ohio
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Joined: 04/28/2004
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I use 30-35 psi through the city water connection using a 'quick' connect for my compressor.
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