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Old 09-24-2010, 04:18 AM   #1
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Question Winterizing Compressed Air Inquiry

When winterizing, What is the typical amount of compressed air pressure used to blow out the lines? I don't want to little but then again I don't want to much. Thanks.
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Old 09-24-2010, 05:34 AM   #2
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I am not sure if this helps but I just recently bought a blow out plug to connect to the water inlet for this. On the package it says not to exceed 50 psi. Other than that I am not sure as this is our first year with a trailer so the winterizing isgoing to be a new experience.
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Old 09-24-2010, 05:44 AM   #3
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I've seen posts for 20 psi all the way up to 50 psi so I want to play it safe and see what others are safely using. I don't want to run into the situation of blowing lines.
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Old 09-24-2010, 07:17 AM   #4
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i have always used 40 to 50 psi. it is lots of pressure. pull your drain plug on the hot tank first, then bypass the hot water, then start opening taps one at a time. don't for get the outside shower. i have had a few friends do that a few times. then just pour a couple of cups of anitfreeze down the drains.
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Old 09-24-2010, 07:32 AM   #5
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Place press. reg. in air line before it goes into the adaptor plug at the city water inlet. This can be safely set at 40psi. Youroo!!
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Old 09-24-2010, 07:40 AM   #6
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40-50 psi is all the old gray plumbing systems could handle.
All current RVs use PEX, aka Cross-linked polyethylene
PEX can handle a lot more pressure than is really needed to clear the lines.
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Old 09-24-2010, 08:31 AM   #7
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I get the fitting into city water inlet, BUT WHat sorce of air are you all using?
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Old 09-24-2010, 08:39 AM   #8
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I have a Dewalt 200 psi / 15 gal compressor in my garage.
You donít need anything that big .
A portable one big enough to run a nail gun will do the job just as well.
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Old 09-24-2010, 08:43 AM   #9
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kewl I think I have a friend with one of those.... any other ideas? How do you control the psi outage?
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Old 09-24-2010, 08:47 AM   #10
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All compressors have a regulator knob on them to dial in the pressure you need.
Every tool has its own psi requirements.

An inpact gun may use 90 psi & a brad nailer will use a lot less.
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