[AT] Air lines for shop

[Spencer Yost]

Thanks for all the great ideas. There is stuff I learned that I didn’t even know: like something pex-AL-pex even exists. Didn’t know anything about it.

As for the pressure rating on the pipes, some of Lowe’s and Home Depot‘s pipe specifically mention schedule 40, some of the others don’t.  Even for the schedule 40 pipe Lowes list 150 psi.  I’m thinking they just don’t know how to write up the product descriptions because I know schedule 40 handles way more than 150 psi

When I built my shop I did do one thing that I still thank myself for: plenty of natural light.  I’ve got eight, big 4 x 4 windows in the shop.  Because of all the natural light I have ruled out plastic pipes of most varieties.  Plus my farm insurance inspector will have a cow for anything not metal I am sure. 

I got a personal text message in reply to this thread and he to told me to remember to check the pressure ratings of the fittings if I go copper. It seem like a really handy warning so I wanted to pass it along here.

Keep up the great ideas! 

Ps:  As someone suggested, I will keep the runs angled towards a trap. 

Sent from my iPhone

> On Sep 11, 2021, at 9:45 AM, Carl Szabelski <c.s.szabelski at gmail.com> wrote:
> 
> Have you considered CPVC, which is stronger than PVC, but is considered to be more brittle. So you would have to make sure you’re not going to be putting it anywhere where it would take a big hit. I know that if you hit it hard enough you can develop a crack. I believe it’s rated at something like 400 psi at room temperature and something like 100 psi at about 180 degrees. You should be able to find a pressure/temperature chart somewhere online. It also uses a different cement than PVC due to it’s hardness, but there are cements that work on both CPVC and PVC.
> 
> I guess you could always put some kind of cover over it if it’s in an area where it might take a hit.
> 
> Carl
> 
>> On Friday, September 10, 2021, Spencer Yost <spencer at rdfarms.com> wrote:
>> So I’m going to be making three new pipe runs from my air compressor.  Previously I’ve just relied on hoses since the 50 foot hose will reach everywhere in my shop.
>> 
>> It will consist of one long “trunk” run that will be nearly 40 feet, and then a few stub runs of anywhere from 5’ to 15’ 
>> 
>> I was thinking about black pipe as that’s what I have used before. But I had no idea the common, affordable black pipe you find in hardware stores is only good to 150 psi. My compressor is two stage and is 175 psi:
>> 
>> 3/4-in x 3-ft 150-PSI Black Iron Pipe https://www.lowes.com/pd/Southland-Pipe-3-4-in-x-3-ft-150-PSI-Black-Iron-Pipe/3371442
>> 
>> I guess I’m thinking about biting the bullet and going copper. I’d like to go with some of those really neat new aluminum systems but I could never afford that.
>> 
>> What are y’all think about copper? I know 3/4” copper is good to about 1000 psi.   It eliminates  the rust problem that eventually befalls all black steel pipe systems; which is kind of a plus.  As far as installation, I solder better than I cut threads :-)
>> 
>> 
>> 
>> Spencer
>> 
>> 
>> Sent from my iPhone
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