[widebody911]

I re-did the fitting at the valve with a longer nipple, and now it's tight.

I'm using a non-hardeningpipe sealant already, and getting stuff as tight as I can.

The interfaces to the air dryer and filter are metal - no Harbor Freight crap here!

The compressor lives outside, but I have an insulated cover for it to protect it from the elements and keep the noise down.

I thought about using plastic pipe but everyone warned me away from it, although I've seen a lot of shops with PVC air supplies.

When I paint, I put an extra hose inline and coil it up in a bucket of water; I hadn't tried ice water. Going thru the ground will drop the air temp quite a bit though.

The wall mounts are a Home Depot item, colloquially known as "uni-strut". It's a much nicer system than clamping directly to the wall.