Air compressor piping

[eyecandy]

I just purchased a Kobalt 60 gallon compressor and I have a question on the recommended pipe size to run in the garage. The tools I am looking to use are spray gun, D/A sander, impact/ratchet wrenches. From the factory the tank has a 2"x3/8" reducer which I was thinking of changing that to a 2"X3/4" then run some 3/4" copper pipe. The overall run will be around 40-60 ft around the room with 3 drops, depending on the elevation I am guessing drop lengths of 5ft or so.

What do yoy guys run or recommend?

[mxtras]

3/4" copper is my suggestion. 1/2" is adequate for what you described but the reduced air speed in the larger pipe will increase the time to cool thereby dropping more moisture.

Scott

[bartsrp20]

I read somewere that copper and pvc have a tendency to seperate under pressure and they suggestd that you use cast iron pipe! it was on another post somewhere on here. I"ll trie to find it if I can its realy interesting.

[Craig in Denver]

Visegrip:
Ridgid PVC is NOT gas pressure rated. When a water pipe splits open there is only a spray of water as the water is not compressed to many times its normal volume. There is little explosive action. Compresed air expands and the explosive action of the expanding gasses can throw shrapnel everywhere.

mxtras:
There are thousands of articles readily accessable about the dangers of using PVC for compressed air. To summarize all of these articles: Don't use PVC for compressed air systems.

EDITED: I retract my approval of PVC. :embarrassement:

[BUDDY]

I would go 3/4 because you will get more volume (CFM) to your tools. Black pipe would be the best, but very time consuming to run. I have PVC in my shop even though they say you should not use it. I haven't had a problem with it yet.

[Fortyfords]

If we want these forums to stay clean an neat .
We should moderate ourselves and try to post in the correct forum.
This should maybe be in the Disussion Forum.

Never use pvc.
Under pressure if you hit it with a hammer or a object. it will shatter with sharp projectiles and cause very serious injury or death.

Copper or black iron
there is a special plastic or similar type pipe for air ,but I cant rember the name right now.

Rich

[fun4now]

If we want these forums to stay clean an neat .
We should moderate ourselves and try to post in the correct forum.
This should maybe be in the Disussion Forum.

this is one of the points i made before the change and why it was a bad idea. many people ( myself included) don't care what section they are in or are not shore which is the right one.
next we have members telling others they did it wrong or control your self, before long the screw you , bite me starts and we loose members. so let it go, if he wants it here he will post it here. its his question, let him categorize it.
maybe he has a nascar paint booth. painting car's is not motor sports??? i think it is. let others make there own choices.

[Vicegrip]

Ridgid PVC is NOT gas pressure rated. When a water pipe splits open there is only a spray of water as the water is not compressed to many times its normal volume. There is little explosive action. Compresed air expands and the explosive action of the expanding gasses can throw shrapnel everywhere.
Copper pipe will work well and does not have internal rust issues that black pipe can. High pressure and humid air tends to eat the insides of iron pipe and can spit oxide into your tools. $ no object? $tainless $teel. Home use, the plan you have looks good 3/4 for the mains and 1/2 for the drops is standard. Add some drop legs with blow out valves so you can clear ant water that condenses and rund down the drops and keep it from getting into your tools.

[mikeskodiak]

I used 3/4 black pipe and it turned out real nice.

[mxtras]

There are thousands of articles readily accessable about the dangers of using PVC for compressed air. To summarize all of these articles: Don't use PVC for compressed air systems.

I recently plumbed my shop for air and while I wanted to use copper, the cost was prohibitive. Copper has come down since then. I ended up using black iron pipe. I ran a 3/4" trunk circuit with 1/2" drops every 12'. My shop measures 38'X50' with 16' ceilings.

If you use copper, you should use either type L or K. L is identified with blue markings and K is identified with green markings. Type M is marked red and is not recommended but it will hold 125PSI.

Scott