PEX for air?

[radiant dirge]

Is PEX with solid ring crimp fittings suitable for low pressure (<90 PSI) air? I'd want at least 60 PSI in the pipe for airbrush supply without tripping the compressor all the time.

[gilded harness]

I understand technically the question, but I wonder why you would do that? How will you control the pressure at the airbrush, especially knowing that high pressure (above 50 psi, if I remember correctly) could damage the airbrush.

[radiant dirge]

I'll have a regulator down to 40 or less at the point of using the airbrush.

[gilded harness]

I'm far from convinced that the volume difference between regulator before hose and regulator after hose will make a significant effect on how often the compressor run.

[radiant dirge]

it's PV - having a higher pressure in the hose plumbed from compressor to usage point will give more n, moles of air, available for use. I'd consider plumbing with a larger diameter maybe, to further increase storage. I'll have about 15' of run, using 1" or even 2" pipe for the long straight run might be feasible.

I'll be plumbing so the compressor is in a different room. A small two tank compressor suitable for air nailers, not a purpose built airbrush compressor. If my wife lets me, i'd plumb to the bathroom sink also for cleaning.

[gilded harness]

Just calculated the DeltaV. If lower than 5% I would say it's not worth. If over 10% that might be a good idea.

On the other hand, the compressor will run less frequently, but also longer when it does.

[tough gulch]

@radiant dirge should be fine depending on the type of PEX

most people would plumb air with copper though fwiw

[tough gulch]

So you can have the compressor in another room hahah

[radiant dirge]

I have ... not the best track record for sweating pipe. I successfully installed a sink once, but then failed trying to do air afterward.

Plus, this is in living space; I don't want to test the fire resistance of our plaster and lathe walls.

[tough gulch]

Fair hahaha