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  • need help with compressor

    This is an old craftsman comp. I dunno much about it except it pumps fast and keeps up with my impacts and all but I don't see a pressure switch or anything. The motor is wired direct and there's not even a pressure relief valve... anybody seen or had one like this?

  • #2
    Here's a picture
    Attached Files

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    • #3
      I had one years ago some what like that

      the one I had moved a lot of air and would just dump from the pump when it reached full pressure, I think it was for a paint system, rather loud. I just ran full pace and the pump would burp off air when it was at full pressure.

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      • #4
        This thing went to 180psi and was still going. Its really quiet and pumps air surprisingly fast

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        • #5
          Why don't you just run your own regulator, pressure switch, and blow off? If it works good sounds like it just needs some safeguards.

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          • #6
            Thats what ima do. I was just wondering if anyone knew what it was

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            • #7
              I would use a pressure switch like this http://www.ebay.ca/itm/Air-Compresso...-/200659612000. You might have to get creative with the plumbing and put in a check valve and a tee. Your system should also have a properly sized and installed over-pressure relief valve.---Meltedmetal

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              • #8
                If theres no relief valve, I would call it a bomb and not a compressor.

                Get a pressure swith as well as a blow off valve rated at about 180 Psi or so, A standard 2 stage compressor goes up to 175 psi.

                If you strictly use it at home I would mount it on a bigger tank, Just make sure the tank is rated for your max pressure, If you use it in the field and at home I would run some hoses to an auxillary tank so you volume in case you want to do a little sandblasting.

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                • #9
                  Originally posted by Portable Welder View Post
                  If theres no relief valve, I would call it a bomb and not a compressor.

                  Get a pressure swith as well as a blow off valve rated at about 180 Psi or so, A standard 2 stage compressor goes up to 175 psi.

                  If you strictly use it at home I would mount it on a bigger tank, Just make sure the tank is rated for your max pressure, If you use it in the field and at home I would run some hoses to an auxillary tank so you volume in case you want to do a little sandblasting.
                  It's just a matter of time before that small tank has had enough and explodes. I have never seen a compressor like that one from a manufacturer or store. If it's a craftsman and has a model # maybe you can find it on their parts website. 180 lbs is 5 lbs more than my Quincy will take. My 11 gallon portable air tank I'll only fill to 100 lbs. I think it's rated for 125 Lbs

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                  • #10
                    I agree with the bomb

                    Not have any cut off and no relief valve could create a bad day.

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