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Garage Air Lines #4661677
02/10/18 08:24 AM
02/10/18 08:24 AM
Joined: Apr 2014
Posts: 1,340
South Central PA
Delta Offline OP
Delta  Offline OP
Joined: Apr 2014
Posts: 1,340
South Central PA
Looking to add an air compressor to my garage, not anything big, just a 20 or so gallon for the moment. Not looking to keep it portable though, but stationary in a corner. My question is can I run a stationary line in PEX? I know PVC is a big no as far as compressed air lines, and metal lines are out of the budget. I know they sell Garage-Pak air line kits, but like metal, it's out of the budget. I have a PEX crimping tool, and the tubing is affordable. Would there be any objections to using PEX? Max pressure would be in the 120psi range and not pressurized all the time.


'17 VW GTI 2.0T - 6MT - 10K - Edge 0w40
'15 Camry SE - 2.5 - 21K - PP 0w20
'99 S10 - 2.2 5MT - 156K - PP 10w30
Re: Garage Air Lines [Re: Delta] #4661685
02/10/18 08:30 AM
02/10/18 08:30 AM
Joined: Nov 2013
Posts: 3,213
Kentucky
Ramblejam Offline
Ramblejam  Offline
Joined: Nov 2013
Posts: 3,213
Kentucky
For your usage, PEX will be fine; no issue at all.

Re: Garage Air Lines [Re: Delta] #4661695
02/10/18 08:50 AM
02/10/18 08:50 AM
Joined: Jan 2013
Posts: 2,068
Texas
WyrTwister Offline
WyrTwister  Offline
Joined: Jan 2013
Posts: 2,068
Texas
I have seen PVC used for air lines . I did not know it was a no - no ?

Can not remember what the pressure ratings are for PEX and the fittings ?

I have used it only once , when we replaced the water main to the house . I used brass fittings & the copper crimp rings .

Best of luck to you .


Wyr
God bless
Re: Garage Air Lines [Re: Delta] #4661696
02/10/18 08:50 AM
02/10/18 08:50 AM
Joined: Jun 2003
Posts: 17,810
Deplorable in apple valley, ca
Chris142 Offline
Chris142  Offline
Joined: Jun 2003
Posts: 17,810
Deplorable in apple valley, ca
Looks ok.
https://www.garagejournal.com/forum/showthread.php?t=87479

Every shop I have worked at had pcv! I just threw rubber air hose into my rafters at home.


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Re: Garage Air Lines [Re: Delta] #4661703
02/10/18 08:57 AM
02/10/18 08:57 AM
Joined: Jun 2003
Posts: 5,949
Illinois
SHOZ Offline
SHOZ  Offline
Joined: Jun 2003
Posts: 5,949
Illinois
When PCV explodes it sends out shrapnel.


2008 Hyundai Accent 1.6L 5 sp manual hatchback
2010 Hyundai Genesis Coupe Track 2L Turbo 6sp manual
Re: Garage Air Lines [Re: WyrTwister] #4661705
02/10/18 08:59 AM
02/10/18 08:59 AM
Joined: Dec 2006
Posts: 1,460
Michigan
MrHorspwer Offline
MrHorspwer  Offline
Joined: Dec 2006
Posts: 1,460
Michigan
Originally Posted By: WyrTwister
I have seen PVC used for air lines . I did not know it was a no - no ?


When PVC fails, it turns into plastic shrapnel.

Re: Garage Air Lines [Re: Delta] #4661707
02/10/18 08:59 AM
02/10/18 08:59 AM
Joined: Nov 2006
Posts: 20,564
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,564
MA, Mittelfranken.de
You can get 100ft 1/2" OD air line for cheap then get the push on fittings you need. This is fine for your unit but not for large 2 stage compressors pre regulator.

https://www.weselltools.com/100-ft-rapid...ASABEgIajPD_BwE


ASE L1, Master. Deutsch Meisterbrief.
Re: Garage Air Lines [Re: Delta] #4661709
02/10/18 09:01 AM
02/10/18 09:01 AM
Joined: Feb 2011
Posts: 893
N. Georgia Mtns
Sierra048 Offline
Sierra048  Offline
Joined: Feb 2011
Posts: 893
N. Georgia Mtns
Maybe I'm a gambler and don't know it. In our house we sold to move where we are now, we had a two car garage. I set my compressor up in a small room off the garage and ran four lines from the compressor to the four most convenient and useful locations. Coming from the compressor I used the black coated steel pipe and transitioned over to 1/2" schedule 40 pvc in the ceiling. At the end of each run I transitioned back to the black coated steel pipe for the down portion from the ceiling. I did this to prevent someone from accidentally damaging the pvc. I wasn't worried about the pvc overhead from being damaged. I never had an issue using the pvc. It held up just fine for eight years. The person who bought the house was delighted it was already there for him to use.

Where we are now I used the same configuration with only two runs. One basically just goes through a garage wall opposite the compressor (all steel pipe), and I ran about 25' of pvc to my workbench.

I looked at a lot of the kits for this purpose. They were more costly than what I wanted to spend. Only real cost to my set-up was the steel pipe and the transition couplings. I'm sure some might be questioning my set-up but it worked for me. YMMV.


2014 Nissan Frontier
2014 GMC Sierra 1500
Re: Garage Air Lines [Re: Delta] #4661719
02/10/18 09:11 AM
02/10/18 09:11 AM
Joined: Apr 2008
Posts: 83
Leesport, PA
MedicRxDoc Offline
MedicRxDoc  Offline
Joined: Apr 2008
Posts: 83
Leesport, PA
Would sunlight weaken the PVC or is the yellowing not a problem to the integrity?

Re: Garage Air Lines [Re: MedicRxDoc] #4661732
02/10/18 09:29 AM
02/10/18 09:29 AM
Joined: Aug 2010
Posts: 5,933
Champlain/Hudson Valley
Kira Offline
Kira  Offline
Joined: Aug 2010
Posts: 5,933
Champlain/Hudson Valley
If PEX works-GREAT!

If heavy PVC works-GREAT!

A friend bought a 12 year old pre-fab house (a demo which had never been hooked up except for electric) plumbed with PVC.

When we sent water to it all the PVC split, cracked away and crumbled. No doubt this pre-fab was of lower quality throughout but, if there's some kind of weakness in PVC and something else works a lot better, I'd say go for the better line material.

The heavier PVC might be just fine. I don't know.

Re: Garage Air Lines [Re: Delta] #4661738
02/10/18 09:32 AM
02/10/18 09:32 AM
Joined: Apr 2014
Posts: 1,340
South Central PA
Delta Offline OP
Delta  Offline OP
Joined: Apr 2014
Posts: 1,340
South Central PA
Looks like for my needs it will probably be ok. The link Trav posted does look like it would be cost efficient.

As far as PVC, I'd be less worried about UV and more about temperature in my garage. It's a detached un-insulated garage that gets real cold in the winter.


'17 VW GTI 2.0T - 6MT - 10K - Edge 0w40
'15 Camry SE - 2.5 - 21K - PP 0w20
'99 S10 - 2.2 5MT - 156K - PP 10w30
Re: Garage Air Lines [Re: Trav] #4661761
02/10/18 09:50 AM
02/10/18 09:50 AM
Joined: Aug 2003
Posts: 11,012
Buffalo, NY
JTK Offline
JTK  Offline
Joined: Aug 2003
Posts: 11,012
Buffalo, NY
Originally Posted By: Trav
You can get 100ft 1/2" OD air line for cheap then get the push on fittings you need. This is fine for your unit but not for large 2 stage compressors pre regulator.

https://www.weselltools.com/100-ft-rapid...ASABEgIajPD_BwE


Exactly.

Even the cheap orange PCV hose from Harbor Freight would work great. Better than trying to use the stuff 'non-stationary' in a cold garage.

If you want to run just a section of pipe to attach hose to, I'd just use black iron.

Last edited by JTK; 02/10/18 09:52 AM.

2017 Ram 1500 4x4, 3.6L. 2016 Nissan Quest SV (Babe magnet IV)
Re: Garage Air Lines [Re: Delta] #4661802
02/10/18 10:16 AM
02/10/18 10:16 AM
Joined: Sep 2010
Posts: 7,594
Planet Earth
2015_PSD Offline
2015_PSD  Offline
Joined: Sep 2010
Posts: 7,594
Planet Earth
OT Sorry, but with a user name of Delta and a subject line of "Garage Air Lines", I expected the post to be related to something else entirely. crackmeup crackmeup

Back on topic, heat will influence the amount of pressure that PEX (or any plastic) can withstand. A quick Google search found this:


Re: Garage Air Lines [Re: MedicRxDoc] #4661843
02/10/18 10:54 AM
02/10/18 10:54 AM
Joined: Feb 2011
Posts: 893
N. Georgia Mtns
Sierra048 Offline
Sierra048  Offline
Joined: Feb 2011
Posts: 893
N. Georgia Mtns
Originally Posted By: MedicRxDoc
Would sunlight weaken the PVC or is the yellowing not a problem to the integrity?


That's a great point. I would never have used the pvc like I did if it was exposed to an outside environment. And I previously stated black steel pipe, I meant black iron pipe. Maximum pressure for Sch. 40 pvc is approximatelyy 360 psi. Burst pressure approximately 1900 psi. To me, air pressure at between 90 - 120 psi should be fine. https://www.engineeringtoolbox.com/pvc-cpvc-pipes-pressures-d_796.html


2014 Nissan Frontier
2014 GMC Sierra 1500
Re: Garage Air Lines [Re: Delta] #4661847
02/10/18 10:57 AM
02/10/18 10:57 AM
Joined: Sep 2015
Posts: 6,075
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 6,075
Kalifornia Kollective
PVC pipe is OK, I guess. But the fitting tend to break after a while. Especially the Tee's ... Shedule 80 might be OK ...

I'd just go get Harbor Freight hose and run that. Cheap, easy, no issues smile


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
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