[AT] Air lines for shop

[Brad Loomis]

I've run miles of copper at two wineries for air and nitrogen, glycol, and
water. In the last few years I've used ProPress fittings, but that is a bit
pricey for a one off home shop. Although our pressures are regulated to
about 110 for air and 100 for nitrogen there are no leaks and PP is good
for 350 if I recall. Heck PVC is good for that. Higher if you go Sch. 80. I
know a few shops that are run in PVC. It doesn't get any easier than that,
if you support it well so it doesn't look like a sagging old mess. I would
never do pipe. Way too much work. I may be cheaper in the long run, but PU,
without a machine I wouldn't even think of that. I wouldn't now and I have
access to one. :) We also use a lot of nylon tubing for smaller runs, and
to connect rams, etc. with push to connect fittings. McMaster. That also
takes fairly high pressures, not sure the max w/o looking it up.
Brad

On Fri, Sep 10, 2021 at 6:43 PM 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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