Here we go again: PVC PIPE FOR AIR SUPPLY LINES

Pex is easy to use. I recently had to add a faucet to my Wife's shop. All the plumbing is in the crawl space so it was easy to tap into the existing copper pipe using brass fittings that are made to be used with either Pex or copper pipe. The fittings atre removable using a horseshoe shaped tool that come 3 in a package for less than a buck. I left the tools on the Pex after the installation so they would be there when I need to add some more plumbing down the road. I have been thinking about using large diameter Pex for air in my shop. I don't know how big it comes though. I want at least 1 1/2 ID. Eric

PEX is possible.

The special Air rated PVC is made for piping up chemical refineries where regular steel pipe would dissolve in weeks and they have to use Plastic and Fiberglas and Stainless to build the whole place. And AIUI it's HELLACIOUS EXPENSIVE. Not for the price averse.

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"Bruce L. Bergman wrote

Another one for comment:

I've been using grey plastic electrical conduit for projects. It's cheap, machines nicely and the thick wall permits strong threads. Is it any good for pressure?

jsw

snipped-for-privacy@snyder.on.ca wrote in news:3s8rc752lok7mli6oejji4c1j0hjk6m7to@

4ax.com:

Perhaps a nice plaid?

I'd be really nervous about painting PVC pipe with any sort of solvent based paint. It reminds me too much of what happens when you use cyanoacrylate glue/threadlocker on Lexan. Not a pretty thing, but at least it fails quickly.

Doug White

cyanoacrylate glue works fine on Lexan.

i

On 2011-11-24, California Rocket Scientist

I've used it too. But take care. Crazing is a possibility.

Dow rates the resistance of polycarbonates to cyanoacrylates as poor.

pg 12 Take care with the threadlockers as well.

Then it's low on Oxygen. That explains a LOT!!! ;-)

There you go, spoiling all their full of learning by making mistakes! :)

Some have to lose body parts before they listen to experience. :(

I haven't run into that yet, but I am a newby to compressed air, only had a compressor for about 4 years and just learning what I've been missing, dammit! Gerry :-)} London, Canada

"Michael A. Terrell" on Thu, 24 Nov 2011

15:15:37 -0500 typed in rec.crafts.metalworking the following:

While the smart person learns form their mistakes - the wise person learns form other's mistakes. Besides, They can't make them all.

"Michael A. Terrell" on Thu, 24 Nov 2011

20:25:03 -0500 typed in rec.crafts.metalworking the following:

Nothing like someone saying, "Well dang, I didn't think it would blow up like the first time."

And 'I didn't need BOTH eyes, anyway.'

Of course, since a lot of mistakes are fatal.

The Parker Store clerk sold me some reinforced clear tubing for the return line on my hydraulic loader. Six years later it's still flexible.

may have been real Tygon which doesn't need soluble plasticizers to remain flexible. jsw

It looks like that stuff is made of polyethylene. If so, it can't be solvent welded and you will probably have to use hot air or hot wire to weld it together.

The reason pros use them is they pack more power into a smaller lighter unit, good ones last forever, there is NO shock hazard, and no spark hazard when working around fuel vapours etc.

You can have my air impact when you can pry it out od my cold dead hands - along with my air ratchet and drill.

The electric impact? I returned it after the first time I tried to use it . total waste of money and effort.