Drying compressed air

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  • April 19, 2011 at 8:59 pm #30385

    So after buying pretty much everything to paint my car bumper i’ve come to realise that getting the compressed air dry and clean enough isn’t as straight forward as i thought it would be. The guy sold me the compressor says if i have the set up in the diagram below it should cut it for painting on cool dry days.

    I just wanted to know what you guys thought about the setup.

    Cheers

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    April 19, 2011 at 11:07 pm #30386

    That’s not enough distance (depending on a number of variables being assumed here). My set up is at least 50′ long and all 3/4″ copper with drop legs and ball valves where I need them. I’m going to be setting up a “radiator” with 3/4″ copper pipe just before my final filter/regulator on the wall where I hook up my line. I’ve never found the mini inline dryers worth the effort and I think the reduce flow a lot which is more of an issue if you’re painting with a smallish compressor. Get as much pipe between the compressor and you and get a drop leg on the final connection before the water trap.

    April 19, 2011 at 11:23 pm #30387

    I can get a longer air hose about 100ft of it but i don’t know where to get copper pipes or how to plumb it. If i can’t get any copper is there an alternative? get a desiccant filter perhaps?

    April 20, 2011 at 4:21 am #30388

    This is how I have mine set up. The up and down part is 3/4″, the rest is 1″. I think it’s around 50ft. of pipage.
    [IMG]http://i28.photobucket.com/albums/c240/clubhotness/DSC00109.jpg[/IMG]

    April 20, 2011 at 5:46 am #30390

    You might consider a dessident snake, you can use these for a few jobs before you have to replace it and something that I have found works really well and is fairly cheap is one of those toilet paper filters by motor guard. You can actually use toilet paper for the filter. Just stay away from the scented ones have been rumored to cause fisheyes.

    Chuck

    April 21, 2011 at 1:44 am #30417

    I’ve got 2 auxiliary tanks mounted about 10′ up on the wall above the compressor. right after that I have a 1″ water trap. It has never bled any water out since I finished this system. I thought it was clogged…. I opened it up and it was full of dust! bone dry.

    April 21, 2011 at 11:18 pm #30445

    Come out of air comp. into 21 feet up and down wall with pipe and 180 degree fittings (copper or steal) into a water separator/water trap,
    And then on out too shop plumbing and/or another air/oil filter for painting.

    That should/would be sufficient, (The first moisture trap should stop a lot) the second just guaranty’s it.

    Don’t use hose in first 21 feet the metal pipe gives off heat easyer, Thats what you want to get rid of heat too cool the air.
    So moisture will condense in first trap.

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