buried airline

[Torque1st]

Let the ground do the cooling!

 

[mad57]

is it better to put the dryer right after the compressor, or to let the ground cool the air and then dry it on the shop side? I dont really need dry air at the house as I would mostly be blowing things off, maybe an occasional air tool.

I have no dryer on my system at all , open door on compressor shed,and i really dont have much of a water issue,BUT i drain it every week or so and it runs pretty much every night during the week after work, south nj. even in my blast cabinet i bought one of those clear glass water seperators never a drop in it. ground cools it alot i guess.

 

[BLACK DEATH]

Now with black pipe or galvanized, I think they rust from the inside out, not outside in when buried or not buried. I work this type for years and it seems the outside can last forever buried and unprotected. Weve seen very old pipes look decent on the outside. The inside is what's goes bad. Now this is with potable water not air.

 

[Torque1st]

Flowing water does things...

 

[bjcouche]

I'm planning on running some air line underground as well. My plan was that when the concrete floor of the garage was poured, I placed a 1" PVC electrical conduit (with large sweep 90's) under the concrete from the far garage wall to the spot where my vehicle lift will be. I plan on pulling plastic air line through the conduit when I get the lift installed. There is a company that sells a flexible plastic air line similar to PEX but for air systems. They market it as a quick installation system, but the hardware is expensive. I plan to use a similar product designed for large truck air brake lines. It looks like PEX but is rated for air up to 150psi (my comp is only 125psi). Almost every big rig on the road uses the stuff and it's fairly inexpensive, you just have to know where to buy it. The drawback is that it only comes in sizes up to 5/8"OD. That would be fine for my application but might be too small for a main line in a shop.

http://www.hoseandrubber.com/PDF/Trucking/Gates_AirBrakeTubing.pdf

Brian Couchene

 

[BD1]

OH OK, Im just not happy with the 30% safety factor, the black iron has a 300% safety factor and I only need to go 50 feet, it would be more questionable for a longer run. Its only $150 to go 1-1/2. I know, overkill, but that my middle name. then I save the cost and space of a second tank inside as someone suggested.

http://www.homedepot.com/h_d1/N-5yc...53&langId=-1&keyword=black+pipe&storeId=10051

I also like things to be available locally. If I order something then Im at the mercy of the mail later if something breaks.

Check the "made in " label . By me their black pipe is all china. Neighbor bought it and I was cutting and threading it for him. Had problem with the hardness of it for threading. It would chew up threads. Maybe look for a local pipe supplier. They should have the real stuff in 21 footers and cut and thread for you to your size. If you were a 1,000 miles closer I would bring my machine and tools over and help.

 

[LutzTD]

Check the "made in " label . By me their black pipe is all china. Neighbor bought it and I was cutting and threading it for him. Had problem with the hardness of it for threading. It would chew up threads. Maybe look for a local pipe supplier. They should have the real stuff in 21 footers and cut and thread for you to your size. If you were a 1,000 miles closer I would bring my machine and tools over and help.

good to know thanx, who would normally carry these, plumber supply, Ace Hdw, other?

 

[financer83rs]

Bury Pex that is what i did. works fine. You will likely need a way to drain/filter water in the garage but otherwise works great. 1" pex or 3/4" would be best.

 

[LutzTD]

Bury Pex that is what i did. works fine. You will likely need a way to drain/filter water in the garage but otherwise works great. 1" pex or 3/4" would be best.

I thought about PEX but in the end I want a higher pressure rating. Im only going 50ft with the shop line. The house is 75ft but it doesnt need more than a 1/2 line to be more than adaquate for my needs. I may even just bury a rubber line in PVC for that run.

 

[BD1]

good to know thanx, who would normally carry these, plumber supply, Ace Hdw, other?[/Q?

what town are you in ??? A local plumbing supply supplier will have it. Most can even and cut and thread to size. I guess you could call Ace.

 

[agoins]

Just a suggestion here, would anyone be opposed to suggest using air brake line? Its cheap, and would pull pretty easily through conduit ran through the ground(would have to watch bend radius though).

http://www.smcpneumatics.com/americansmc/Fittings_Tubing/17_Nylon_Tubing.pdf
http://thorbros.com/air-line-dot/1/2-air-line/12-dot-reinforced-air-line
$52.50 for 70'

 

[sberry]

I don't know how much rolled copper is now but 5/8 would work at 50 ft for hi pressure, regulate at point of use.

 

[ponjohn]

I need to run a line to shed ONLY to put air in the tractor tires.

At 100 degrees it's good for 130 psi.

It looks like pex would be fine...yes?

 

[LutzTD]

Im going to go with iron pipe. 1 inch from the compressor building to the garage, 1 inch main feeders in the garage and 3/4 for the drops. I got a used threader set this week. So I started laying out the shop and airlines. I went to the far corner as that will be the only part not under concrete at the end. Someones suggestion to run it in PVC under the drive was great, I added a 4 inch to go under where the drive will be. The run will be 2 feet under ground. At the end I added another 2 foot drop to be a moisture catch. At the bottom I added a brass fitting with a 3/16 line I will bring up with the pipe and in the same hole to a timer controlled drain valve and into a catch can. If I see it is not really seperating much I can block it off. I anticipate the cool ground will condense out a lot of the water. I still need to figure out the inside piping. I have an auto float condensate drain im going to pu below this pipe coming into the building also just for good measure. I will keep all of the lines uphill from this point. you can also see my future bench location and air hose reel.

 

[Torque1st]

Sounds like you have it all figured out properly!