Who Gets To Say, "i Told You So"?

[FoxMustangLvr]

I use black iron pipe for my air lines. I know people will say that it's not "likely" it will happen or "i've been using PVC for "x" amount of years without fail" blah blah but what if you get a bad piece of pipe that has an area with a slightly thinner wall and it goes BOOM with you near it? Want to bet your face/life on the quality control of the PVC manufacturer? Iron or copper for me please.

 

[Davedacarpainter]

Copper lines? Ooooohhhhh! That's part of my dream garage one day. Bucket list plumbing, so to speak.

 

[Noobz347]

Copper lines? Ooooohhhhh! That's part of my dream garage one day. Bucket list plumbing, so to speak.

Not me. I want to "beam" the air pressure from the tank to the base of the gun. That way, I don't need any lines at all.

In other news, here's a general chart assuming 79* ambient temperature:

Longer lengths = more flex; you get the idea.

 

[Boosted92LX]

Not me. I want to "beam" the air pressure from the tank to the base of the gun. That way, I don't need any lines at all.

In other news, here's a general chart assuming 79* ambient temperature:

Longer lengths = more flex; you get the idea.

I knew it would hold a lot, but I didn't know it was rated that high. Interesting. I may have to drive up to Collin's house and investigate further..

 

[Noobz347]

It's not really that high. Max operating pressure for 12 inches of schedule 40 is only 79 psi (granted, that's a big pipe assuming they're talking diameter).

The reason for that of course, is that it expands and contracts each time it's pressurized. Over time... poof. The burst pressure that you're looking at assumes brand new schedule 40 PVC and not so much PVC that's seen pressure rises and drops over a period of months or years.

Shark-Bite plumbing or something similar, would be better as air-supply piping I'd think (never tried it for air).

 

[Chuckman]

Copper FTW. Other than a 1/2"x48" long section of hydraulic hose to keep vibration down I think I have less than $40 in my line setup running from the basement up into the middle of the garage (3 8 or 10 foot lengths of 1/2" tube, a 10 pack of 90s, one T and 3 female npt ends). Obviously add in a filter/trap and a couple ball valves but still.

 

[Noobz347]

Copper FTW. Other than a 1/2"x48" long section of hydraulic hose to keep vibration down I think I have less than $40 in my line setup running from the basement up into the middle of the garage (3 8 or 10 foot lengths of 1/2" tube, a 10 pack of 90s, one T and 3 female npt ends). Obviously add in a filter/trap and a couple ball valves but still.

Surge loops are a great idea. Something like this might have made the sched 40 system last longer too.

 

[Boosted92LX]

It's not really that high. Max operating pressure for 12 inches of schedule 40 is only 79 psi (granted, that's a big pipe assuming they're talking diameter).

The reason for that of course, is that it expands and contracts each time it's pressurized. Over time... poof. The burst pressure that you're looking at assumes brand new schedule 40 PVC and not so much PVC that's seen pressure rises and drops over a period of months or years.

Shark-Bite plumbing or something similar, would be better as air-supply piping I'd think (never tried it for air).

Of course it's going to be lower for 12 inch diameter pipe, the surface area to psi ratio is insane. Why the hell would you run 12" diameter pipe? 3/4 is as large as you'd ever need to keep your volume and at sch 80 its good up to 413 psi. Show me a shop compressor that can put that much pressure up and I'll kiss ol' spot. Something caused that pipe to rupture be it fatigue from mounting, vibration, heat, UV, something.

 

[Noobz347]

I chose that the (fail) to help illustrate the flexing. There's a similar/lesser effect with length. Square inches are square inches.

 

[hoopty5.0]

I think I discovered the root cause of the bust - I had a glue joint at a 90° elbow fail and when it busted, it broke off the other piece I pictured yesterday. So, I guess the PVC bursting under pressure was not the issue, but I'm still going to replace it all.

 

[84Ttop]

I think I discovered the root cause of the bust - I had a glue joint at a 90° elbow fail and when it busted, it broke off the other piece I pictured yesterday. So, I guess the PVC bursting under pressure was not the issue, but I'm still going to replace it all.

Did you use the correct primer and glue? Typically this is where I see most glue joint failures, in selecting the incorrect primer or glue. I prefer copper too as I mentioned on your FB post, I have about 100' of copper in my shop and wouldn't have considered doing it any other way.

Not that I have taken a lot of pictures of just the air lines, but here are a few pictures with the air lines in the background: You can see the 3/4" copper about 6" from the ceiling. Don't mind the sagging line on the left side, that has since been fixed

You can see the stainless flex connector that leaves the compressor and ties into the filter/regulator on the wall there

 

[Boosted92LX]

Did you use the correct primer and glue? Typically this is where I see most glue joint failures, in selecting the incorrect primer or glue. I prefer copper too as I mentioned on your FB post, I have about 100' of copper in my shop and wouldn't have considered doing it any other way.

Not that I have taken a lot of pictures of just the air lines, but here are a few pictures with the air lines in the background: You can see the 3/4" copper about 6" from the ceiling. Don't mind the sagging line on the left side, that has since been fixed

You can see the stainless flex connector that leaves the compressor and ties into the filter/regulator on the wall there

I love your cars.

 

[hoopty5.0]

I love your cars.

Sh1t. I love everything about these pictures.

 

[Davedacarpainter]

Did you use the correct primer and glue? Typically this is where I see most glue joint failures, in selecting the incorrect primer or glue. I prefer copper too as I mentioned on your FB post, I have about 100' of copper in my shop and wouldn't have considered doing it any other way.

Not that I have taken a lot of pictures of just the air lines, but here are a few pictures with the air lines in the background: You can see the 3/4" copper about 6" from the ceiling. Don't mind the sagging line on the left side, that has since been fixed

You can see the stainless flex connector that leaves the compressor and ties into the filter/regulator on the wall there

Does that silver gt have a coyote in it?

 

[stpete]

Back 12 years ago when I plumbed mine, the delta between copper and Sch 80 PVC was less so I chose copper. These days, I would probably choose Sch 80 PVC. Aside from this one, all the failures I've actually seen the results of were related to something hitting the PVC and breaking it. I shot a screw into one of my runs that goes through the wall to the basement. Had a bit of a scare as the thing started hissing, but glad I had copper.
I keep my compressor at pressure all the time, but I would probably turn it off if I had PVC.

 

[General karthief]

Did you use the correct primer and glue? Typically this is where I see most glue joint failures, in selecting the incorrect primer or glue. I prefer copper too as I mentioned on your FB post, I have about 100' of copper in my shop and wouldn't have considered doing it any other way.

Not that I have taken a lot of pictures of just the air lines, but here are a few pictures with the air lines in the background: You can see the 3/4" copper about 6" from the ceiling. Don't mind the sagging line on the left side, that has since been fixed

You can see the stainless flex connector that leaves the compressor and ties into the filter/regulator on the wall there

Do you need a friend? Can I come over and play with your toys?
Wanna adopt a older kid? I'm ugly, my mommy dresses me funny and my eyes don't match but I like long walks on the beach.

 

[FoxMustangLvr]

Do you need a friend? Can I come over and play with your toys?
Wanna adopt a older kid? I'm ugly, my mommy dresses me funny and my eyes don't match but I like long walks on the beach.

Bribe Nick with tacos

 

[General karthief]

I'm on my way to taco bell as we speak or type that is.

 

[84Ttop]

Does that silver gt have a coyote in it?

Not yet, it's sitting on the floor next to it currently

 

[84Ttop]

Do you need a friend? Can I come over and play with your toys?
Wanna adopt a older kid? I'm ugly, my mommy dresses me funny and my eyes don't match but I like long walks on the beach.

Every Tuesday night we hang out in the shop, feel free to stop by! It is a long ride from Florida though, we have some NY guys that make the trip down to NJ as well as some Maryland and Pa guys @TOOLOW91 @MikeH686 @RacEoHolic330