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Copper vs PVC air lines

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jhstarn(at)verizon.net
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Posted: Thu Dec 28, 2006 10:42 am Post subject: Copper vs PVC air lines

Being an ole plumbing contractor (25 years plus) I have installed thousands 

of feet of copper air lines (up to 4") and hundreds of feet of Sch. 40 & 80 

PVC pipe. PVC sch 40 pipe is a lot better than thin wall sprinkler PVC but 

it will still shatter & explode IF a fracture occurs. It will whip about 

under pressure and throw shrapnel shards until the air is turned off.

How do you fracture PVC ?, Good question. Pull too hard on the connected air 

line, accidentally hit it with a blunt object, allow it to be exposed to 

sunlight, "flip" the tangled air hose. Copper will bend, bent, split, crimp 

BUT it does not fly apart. Sch 80 ??, about the same cost as copper. Type 

"L" (blue printing on the pipe) copper is not cheap but will last forever. 

Type "M" (red printing) is OK ? ? BUT I use it ONLY for non pressure lines & 

wind chimes. Fittings ??, you will only find "L" fittings at Lowes & Home 

Depot....Why ??, 'cause they don't make "M" fittings. "M" is thinner & drawn 

harder, brittle, "L" just works better.

Want to try a test....Take a 20' piece of sch 40 PVC (put on a jacket, 

gloves, eye protection (full motorcycle helmet) grab one end of the PVC & 

slam/snap onto your driveway. Then go back to Lowes & buy the copper right 

after you pick up the shattered remain of the PVC.  KABONG  Do Not Archive 

(It's in there several times from me over the years.    8*)

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AV8ORJWC

Joined: 13 Jul 2006
Posts: 1149
Location: Aurora, Oregon "Home of VANS"

Posted: Thu Dec 28, 2006 4:58 pm Post subject: Copper vs PVC air lines

Anyone cutting financial plumbing corners want some of my ole PVC

shards?  System worked just fine until it failed.  I am now

retro-fitting with approved materials.  I know, some knucklehead will

say the PVC of 2006 is new and improved over Schedule 40 PVC of 1983.



Think Safety, do it Right, do it Once, save the time for Flying.



John Cox

#40600

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rv10builder(at)verizon.ne
Guest

Posted: Thu Dec 28, 2006 6:38 pm Post subject: Copper vs PVC air lines

Sorry I asked the question, but also glad I did.

I've decided I'll run a nylon air hose to the ceiling and make due. Less 

chance I'll need a heat gun, a motorcycle helmet nor any concern for PVC 

shrapnel, and it's just so much easier to run it and remove it if I ever 

need to move it somewhere. We are only talking a two car garage, of which I 

am renting half the space from my wife, If I ever decide to just use the 

hose off the ground I think my odds are safer to trip over 15 feet of hose 

and knock my head then the other more dangerous piping options.

Seriously thou, I do appreciate the feedback and thank everyone for the 

thoughts. I'll (really) decide when the time comes what I'll do, even PVC 

might work as I have no intention of using it in the garage for more than 

this project and that, I hope, will not take 20 plus years.

Thanks!

Pascal

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nandrand(at)xtra.co.nz
Guest

Posted: Thu Dec 28, 2006 8:13 pm Post subject: Copper vs PVC air lines

John.  How right you are.  Me, I like old fashioned steel gas tube!!! Not 

that much differance in price........Put the tube on the ceiling, hang the 

air hose(or coil) down, coil will spring up out of the way of your work 

surface!!!!!! Use Aro fittings or simular (quick change) I don't sell 

them.................Just my 2cents......



      Happy New Year to every body.......   Regards  Noel

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