I am going to route compressed air from my compressor location to one
or two other positions in my shop. I am looking at about 50 or more
feet of plumbing. I Googled some information regarding PVC, and
while it is economical, I still am not comfortable. I have come down
to using standard 1/2" black gas pipe and fittings.
Any other ideas, drawbacks, etc.
I went cheap. I bought 100' from Harbor Freight of 3/8 line. Its stiff,
but I live in a ranch and wanted some drops in the shop and all the way
out to the garage. I used up all the hose in a run. I picked up some
tees and 3/8 barbs and made drops with tees offering a connection point
and drain valve. It is great. The hose did have to be returned because
it just was not well made, the second hose has done well.
$19 for the hose on sale, and probably 20 in Ts, ball valves and quick
connects. A lot better than moving my compressor from the basement to
the garage over and over, or running a hose up the stairs and letting
all the bugs in.
Plus it's easy enough to add drops by cutting the main line and sticking
a new T in.
If you are worried about 3/8, get the 1/2 line, there's some Goodyear
line both rubber and plyovac (sp??)
On 5/17/2012 12:07 PM, RonB wrote:
Avoid the PVC. An alternative though, is other plastic air hoses made for
that purpose. They are flexible and at worst, will split rather than
Black pipe is a good way to go. Durable and reasonably priced. I just paid
$1.25 a foot for some. Copper is better, but much more costly.
TIP: Once you figure where you want the drops, add two or three more. If
you are joining two lengths, use a tee and plug rather than a coupler.
You'll be thankful in a year or five when you want to add another leg.
I've thought about running a standard air hose for my compressed air
piping. Except for splicing into it, it's cheap for good quality lengths
(vs pipe) and going to be much easier to route.
There's systems made exactly for this purpose that look like they won't
break the bank ($100 for a basic setup, probably 2-300 for something
nice) and will probably be safer than PVC. Looks like RapidAir is one of
the big systems.
PVC should be fully grounded by wrapping a metal pipe around it. *g*
Yep, pretty nice. HF was selling that for under $40... but it
disappeared from their product list. Wish I had bought it.
Looks like a PEX system basically, except they have the hardware for the
drops that make nice connection endpoints.
Right now northern tool is $99 for that setup.
You buy additional T's and outlets.
On 5/17/2012 2:38 PM, Puckdropper wrote:
Avoid PVC like it was a bomb, because that is exactly what pvc pipe
and compressed air create.
1/2" pipe is too small for distribution piping.
Run at least 1" pipe.
You can buy 5 ft precut and threaded pipe nipples from a plumbing
Connect nipples with a "Tee" with side pointed up toward ceiling.
Add 2, 1/2" Street ells and reducer bushing at the tee so that the
outlet is now pointing down.
Add 1/2?" hose with a quick connect fitting to reach belt high for
Incline 1" pipe about 1/2"/12" run.
Add petcock at end of 1" run to drain.
BTDT, don't need the T-Shirt.
I have copper but I did it before the price went *way* up.
I know of a lot of places (tire shops, etc.) that have black pipe.
I personally wouldn't hesitate to use schedule 80 PVC but then I never
exceed 120 psi on my compressor.
Worked in a plant where the air lines were PVC they went BANG about
once a year. Not nice for your ears if it was near you. Non static
loads of being pressurized and depressurized weakens the PVC joints.
On 5/18/2012 3:23 PM, firstname.lastname@example.org wrote:
how long does it take? the shop i retired from was built in '74 or so
and was still doing fine when i left in '06. (160 psi kick off pressure)
Also, my own garage has had pvc air plumbing for almost the same
length of time. Only 130 psi at home.
remove the "not" from my address to email
The biggest problem is with impact damage. Something strikes the PVC
which is under pressure and it fails catastrophically. Enclosing it in
suitable materials to prevent impacts and contain the fragments is allowable.
They do recommend a max of 100psi when using protected or buried PVC.
On Mon, 21 May 2012 21:17:20 -0400, email@example.com wrote:
NOW who's being an obnoxious snot?
You kids _behave_ now, y'hear?
Progress is the product of human agency. Things get better because
we make them better. Things go wrong when we get too comfortable,
when we fail to take risks or seize opportunities.
-- Susan Rice
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