Made air drier for compressor

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  • John from MD

    American Patriot
    MDS Supporter
    May 12, 2005
    22,738
    Socialist State of Maryland
    I finally got around to making an intake air drier for my Yong Heng compressor. While I have always had oil and molecular sieve output filters, after seeing one in action, I always wanted an air drier.

    I made this out of a filter housing for a osmosis water filter and just added silica gel and plumbing. It makes the compressor quieter and changes the tone from the sintered metal muffler that it came with.
     

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    John from MD

    American Patriot
    MDS Supporter
    May 12, 2005
    22,738
    Socialist State of Maryland
    Why ?
    Serious question

    Additional protection from getting moisture in my scuba tank and rifle reservoirs. When you are using pressures up to 4500 PSI, you don't want any corrosion in the pressure vessels.

    For those who don't know, this is related to a high pressure compressor for PCP air rifles not for shop air use in the 125# range.
     

    rbird7282

    Ultimate Member
    MDS Supporter
    Dec 6, 2012
    18,538
    Columbia
    I used to work in a professional cabinetmaking shop years ago. We had an air dryer installed for the compressor they used on the finishing shop.
    Moisture is the enemy and can cause major issues in wood finishes such as lacquer, varnish, paint, etc.
    One the woodworking side, each workbench had its own air hose with a moisture trap/drain at that point. Those work pretty well but not in the same league as an air dryer


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    euler357

    ,
    Industry Partner
    MDS Supporter
    Apr 6, 2011
    584
    Odenton, Marylandistan
    Looks pretty good. Are you still getting water from your high-pressure filter with this?

    I started using a 125psi shop compressor with regulator down to 5-10psi on the input. It seems like most of the water condenses in the 125psi tank.
     

    John from MD

    American Patriot
    MDS Supporter
    May 12, 2005
    22,738
    Socialist State of Maryland
    Looks pretty good. Are you still getting water from your high-pressure filter with this?

    I started using a 125psi shop compressor with regulator down to 5-10psi on the input. It seems like most of the water condenses in the 125psi tank.

    I just made it last night. :lol:

    However, I was never getting a lot of moisture on the HP side. I have color changing desiccant in with the molecular sieve and I check it every time I use it and only had to change it once this year.
     

    euler357

    ,
    Industry Partner
    MDS Supporter
    Apr 6, 2011
    584
    Odenton, Marylandistan
    I was getting maybe a 1/2 shotglass full of moisture out of the drain of the high-pressure side filter in filling a Great White 97cu ft tank from 2k to 4.5k prior to my mods. Now I'm seeing nearly nothing but I did go a bit overboard with the 1st stage compressor + copper pipe drier + dessicant filter before the intake. I'm curious to know how your setup works when you get it tested.
     

    John from MD

    American Patriot
    MDS Supporter
    May 12, 2005
    22,738
    Socialist State of Maryland
    I have brought my scuba bottle from 3000 to 3400 this morning and I always open the high side first to dump any moisture and didn't get anything. Of course it was a short run, the temp was 44 and the humidity was maybe about the same so it isn't a really valid test. After the warm weather comes back I will do some more in depth checking.
     

    antco

    Ultimate Member
    Apr 28, 2010
    7,045
    Calvert, MD
    We used to purge gallons of water out of the two air compressors tanks at my old shop in Glen Burnie, especially during the more humid summer months. There was a permanent rust stain on the floor in that area because of it. This was a weekly Friday afternoon exercise so the floor would be dry on Monday.

    Wet air is a killer when it comes to finishes and high flow tools.
     

    John from MD

    American Patriot
    MDS Supporter
    May 12, 2005
    22,738
    Socialist State of Maryland
    On the high side, I only had to change it once last year. I don't know how many times I ran the compressor, maybe 50 times.

    For the newly installed air drier, checking it will be easy since it is a see through poly-carbonate vs the steel cylinders for the high side. I plan to change the silica get any time I see any pink at all. It is easy to put it in a toaster oven and dry it out. I have about 10 pounds or so that I kept from past projects. I just dry it and keep it in a pickle jar with a waxpaper seal.
     

    Boxcab

    MSI EM
    MDS Supporter
    Feb 22, 2007
    7,867
    AA County
    What exactly am I looking at? Can you walk me through your pressurization sequence in the picture.

    I've not caught the "air" bug... yet.


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