AlanB's Barn Airlines

   / AlanB's Barn Airlines #1  

AlanB

Elite Member
Joined
Jan 2, 2004
Messages
2,550
Location
Clarksville, TN, USA
Tractor
NH 1925
So, after using the barn for a while as a shop, finally got around to running airlines inside instead of having the hose reel outside the shop and dragging the hose inside.

What I decided to do for my peace of mind was to run PEX tubing for most of it, and then at the doorway I did a drop of copper tubing to assist in condensing out the water.

I chose PEX over PVC for multiple reasons, primarily that I have seen PVC rupture under air pressure and it is not pretty, instead of just a seam going or something like that, it has the ability to shatter and send out fragments. Realistically, the odds of getting hit are slim, but just something I would rather not contend with.
Another plus after working with PEX is that by far, it has to be the simplest system I have used that makes quick sound joints.
Oh, and I have the PEX crimp tools now which makes the entire project practical.

I also felt that the pex would be able to handle the slight flex that would come from my air compressor getting rigidly mounted to the building.

I chose 3/4" pex although I think 1/2" pex would carry it. 3/4" pex id is roughly the same id as 1/2" copper.

At my door, where I ran the 3/8" coupler I wanted to run a copper pipe with a drain leg and valve. My belief is that this will aid in condensation and drop out of the water prior to entering my air hose. This would be the leg I would use to feed my Plasma. My plasma has a toilet paper filter (motorgaurd) and separator / regulator unit but the dryer air you can feed it the better it is.

Probably the neatest thing I can say about the pex, is that after you get the pieces and get a feel for working it, it goes extremely quick. My embarrassing part of my project exemplifies this. If you look close at the first pictures, you will notice that after running this, adding that, changing this and that around, I forgot to actually run the line down to the hose reel, which just happened to be the first part of the system I mounted, and actually was all I meant to initially hook up :) So I walked back into the house slightly disgusted with myself after taking pictures and realizing there was no line to the reel and SWMBO was up and asked if she should make breakfast. So, she started breakfast (mmmm biscuits and Gravy, mmmm, mmmm, mmmm) and I walked back out to cut in a line. I got it done, working and tested, and walked back into the house, as the coffee pot was finishing, and breakfast was moving off the stove. (15 minutes or so) The PEX really does work easy.

Let me see if I can get some pics to post.

OK, pics worked but they are not the quality and size I want. Taking them with my new Droid toy and just have not learned enough of how to use it, but I know it takes bigger better pictures. Will play with it and see but if there are specific questions, or specific pictures requested, feel free to tell me and I will do my best to get them.
 

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   / AlanB's Barn Airlines #2  
I thought from the title you were starting your own airline.

I have never used pex tubing but have read several articals on it. I see there are several types of pex. Which type are you using.
Bill
 
   / AlanB's Barn Airlines #4  
Building inspector told me when they inspected shop that if I was going to install piping for air, that code prohibited PVC... due to the very reasons mentioned above (exploding fragments instead of split seam)... I had not thought of using PEX but plan on using it to update house plumbing in the future. This is a great idea and since I will be purchasing the crimp tool anyway for house project, I will do the shop airlines at the same time and be done with it.
 
   / AlanB's Barn Airlines #6  
I thought from the title you were starting your own airline.

I have never used pex tubing but have read several articles on it. I see there are several types of pex. Which type are you using.
Bill

There two basic types. With oxygen barrier and without. With O2 barrier is used with heating systems to prevent corrosion. Without O2 barrier is used for water installation. There is also specific type for air. Basic infor is here:
http://www.rehau.be/files/Raupex-Engels.pdf
or here:
REHAU AG + Co - Industrial Pipe System - RAUPEX
If I remember it right the basic HVAC tubing is rated 160 psig at 74F, 100 psig at 180F, 80 psig at 200F. The compressed air might have higher rating. In my opinion the Rehau connectors are the best from what I have seen. All metal connectors and fitings are reusable. Don't know about the plastic one. I didn't used those. REHAU manufactures the PEX and the connectors in the USA.
 
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   / AlanB's Barn Airlines
  • Thread Starter
#7  
I thought from the title you were starting your own airline.

I have never used pex tubing but have read several articals on it. I see there are several types of pex. Which type are you using.
Bill


"Standard" waterline pex

Using the "standard" connection method shown below.

PEX Information

I used some sharkbite (not the particular Sharkbite connectors, but sharkbite the brand) tubing and fittings as well as some of the stuff from Lowes which I think the brand they are carrying is Vangaurd.

I am using the copper crimp rings that go on the outside of the PEX line. I think many of my components had made in China stamped on the packages. As much as I hate it, it gets harder and harder to find stuff not made there.
 
   / AlanB's Barn Airlines #8  
Never thought about using PEX. If you are using PEX, why not just use air hose?

Eddie
 
   / AlanB's Barn Airlines #9  
Never thought about using PEX. If you are using PEX, why not just use air hose?

Eddie

Most air hoses have too small diameter for long runs. At least those I have seen so far and might be more expensive than PEX. I priced PEX for floor heating for my new shop. 1/2" was about $30 for 100', 1" about $80 per 100'.
Longer coils are significantly cheaper per foot.
 
   / AlanB's Barn Airlines #10  
That makes sense.

Eddie
 

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