<div dir="ltr">In response to the note Brad just posted, I used this dryer:<div><br></div><div><a href="https://www.mscdirect.com/product/details/39053632">https://www.mscdirect.com/product/details/39053632</a><br></div><div><br></div><div>Some water still gets past it. </div><div><br></div><div>Desiccant dryers aren't cheap either. I have seen some (no experience as I did not go that route) that have rechargeable dessicant media. I guess you remove it and bake it.</div><div><br></div><div>SO</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Sep 13, 2021 at 12:01 PM Stephen Offiler <<a href="mailto:soffiler@gmail.com">soffiler@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Water is certainly a problem! We get humid here (southern New England) too. At work, our 1980's vintage 25HP Ingersoll-Rand seized up this past spring, forcing us to the backup 1960's vintage 15HP and starting a 6-month long odyssey to find a replacement. Somehow Covid affected the compressor industry, but I digress. I needed to throw together a satellite system to keep my 5 CNC machines running independent of the anemic, worn-out 15HP backup. I put in a typical 5HP/80-gallon vertical, plumbed with 1/2" 300-psi rubber lines from McMaster-Carr. Added a chiller. Added a coalescing filter at the compressor, and serviced or replaced the coalescing filter-regulators at each machine. I get about a gallon or so out of the system every morning in the humid months. I didn't use any copper because the whole thing was thrown together intended to be rather temporary, but Spencer is absolutely correct that copper plumbing will help cool and condense moisture better than black iron. I would slope AWAY from the tank and add vertical drops with valves at the bottom for draining. Sloping toward the tank seems like it could work to some degree, but it also seems that airflow might tend to push the moisture upslope.<div><br></div><div>SO</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Sep 13, 2021 at 11:19 AM Spencer Yost <<a href="mailto:spencer@rdfarms.com" target="_blank">spencer@rdfarms.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<div>One of the reasons I have been thinking
copper is because here in the humid south, water in air lines is a
problem. You can not paint without a desiccant filter for
example. Nothing worse than seeing water droplets coming out with
your paint (been there done that). One benefit I thought copper
would have would be to condense water quickly and earlier in the
run; therefore water vapor would be less of an issue at the tool
end(assuming I slant the lines to run back towards the compressor)
and my tool-end water filters wouldn't fill up so fast. <br>
</div>
<div><br>
</div>
<div>Anyone with experience with copper find
this to be true?</div>
<div><br>
</div>
<div>Also, copper is less than $1 per foot
more expensive(3.46/ft vs 2.69/ft) so for a run that will be less
than 100' worth of pipe so I decided to not sweat (excuse the pun)
the cost factor between black pipe and copper and just go on the
merits.</div>
<div><br>
</div>
<div>While continuing to look around at
various options and along the way I saw 1-1/2" black pipe at Lowes
with an oddly specific PSI rating: 231PSI I'm beginning to
think Brice might be right and they are using steam rating....</div>
<div><br>
</div>
<div><br>
</div>
<div>Spencer<br>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>On 9/13/21 9:55 AM, Stephen Offiler
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Brice reminded me of something. Now, it's been a
while since I've put much thought into Schedule rating of pipe.
Reviewing, the basic definition is: Schedule =
Pressure/Stress. Example: Schedule 40 pipe at 1200 psi would
have stress of 30 ksi developed in the walls. That's why wall
thickness increases with pipe diameter - larger diameter means
larger internal surface area means higher force for a given
pressure, so wall thickness is increased to fight the higher
forces and keep stress in the wall constant. I pick the
example above because Schedule 40 Class A pipe has a yield
stress rating of 30 ksi. (There is also a Class B which is
somewhat stronger). At 175 psi your factor of safety is
almost 7, which is quite large. I'd sleep well with this number
as small as 4 - in other words, 300psi. Of course there's
additional considerations for the fittings and whatnot, but as
long as it's Schedule 40, there's really nothing to worry
about.
<div><br>
</div>
<div>That stuff at Lowe's claiming 150 psi.... I don't believe
it. The people writing up the specs on their website are
probably minimum-wage drones. I would get ahold of a chart
showing wall thickness vs pipe diameter and measure the wall
thickness right there in the store (yeah I do tend to travel
with a caliper in my bag most of the time). Dimensions alone
would confirm if this "150 psi" stuff is actually Schedule 40.</div>
<div><br>
</div>
<div> I know you don't really want to use black iron pipe but I
like I said Brice sort of reminded me of how all this pressure
rating stuff works. Of all the options, black pipe is
certainly the most old-school, antique-tractor appropriate.
I'm not against the modern materials and I would also
seriously consider Pex, but not PVC. I can solder copper way
faster than I can screw together black pipe but copper is
pretty darn pricey these days. In my own shop, the answer
is: rubber hose. I've never graduated past the portable
compressor to something big and stationary that lends itself
to permanent plumbing.<br>
</div>
<div><br>
</div>
<div>SO</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
<div><br>
</div>
<div><br>
</div>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Sat, Sep 11, 2021 at 11:43
AM Brice Adams <<a href="mailto:brice.adams@gmail.com" target="_blank">brice.adams@gmail.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">
<div>Spencer,</div>
<div>Something tweaked my memory from plumbing the Huber
about different pressure ratings for steam, air, and
fluids with schedule 40 and 80 pipe. The 150 psi may be
the steam rating and the air rating is 34 to 6 times
higher.</div>
<div>Brice<br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Sat, Sep 11, 2021 at
8:21 AM Ken Knierim <<a href="mailto:ken.knierim@gmail.com" target="_blank">ken.knierim@gmail.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">
<div>Go copper if you're comfortable with sweating it
together. I did that after trying PVC for awhile. Got
some AZ sun on the PVC and it blew out a couple times
with sharp little shards flying around (doesn't
survive impact damage well). I like the sound of PEX
but again, sunlight is abundant here. <br>
</div>
<div>My $0.02<br>
</div>
<div>Ken in AZ<br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Fri, Sep 10, 2021
at 6:43 PM Spencer Yost <<a href="mailto:spencer@rdfarms.com" target="_blank">spencer@rdfarms.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">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.<br>
<br>
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’ <br>
<br>
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:<br>
<br>
3/4-in x 3-ft 150-PSI Black Iron Pipe <a href="https://www.lowes.com/pd/Southland-Pipe-3-4-in-x-3-ft-150-PSI-Black-Iron-Pipe/3371442" rel="noreferrer" target="_blank">https://www.lowes.com/pd/Southland-Pipe-3-4-in-x-3-ft-150-PSI-Black-Iron-Pipe/3371442</a><br>
<br>
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.<br>
<br>
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 :-)<br>
<br>
<br>
<br>
Spencer<br>
<br>
<br>
Sent from my iPhone<br>
_______________________________________________<br>
AT mailing list<br>
<a href="mailto:AT@lists.antique-tractor.com" target="_blank">AT@lists.antique-tractor.com</a><br>
<a href="http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com" rel="noreferrer" target="_blank">http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com</a><br>
</blockquote>
</div>
_______________________________________________<br>
AT mailing list<br>
<a href="mailto:AT@lists.antique-tractor.com" target="_blank">AT@lists.antique-tractor.com</a><br>
<a href="http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com" rel="noreferrer" target="_blank">http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com</a><br>
</blockquote>
</div>
_______________________________________________<br>
AT mailing list<br>
<a href="mailto:AT@lists.antique-tractor.com" target="_blank">AT@lists.antique-tractor.com</a><br>
<a href="http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com" rel="noreferrer" target="_blank">http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com</a><br>
</blockquote>
</div>
<br>
<fieldset></fieldset>
<pre>_______________________________________________
AT mailing list
<a href="mailto:AT@lists.antique-tractor.com" target="_blank">AT@lists.antique-tractor.com</a>
<a href="http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com" target="_blank">http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com</a>
</pre>
</blockquote>
<p><br>
</p>
<pre cols="72">--
Spencer Yost</pre>
</div>
_______________________________________________<br>
AT mailing list<br>
<a href="mailto:AT@lists.antique-tractor.com" target="_blank">AT@lists.antique-tractor.com</a><br>
<a href="http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com" rel="noreferrer" target="_blank">http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com</a><br>
</blockquote></div>
</blockquote></div>