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Thread: Regulating hand plasma air supply

  1. #1
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    Regulating hand plasma air supply

    So I got a Lincoln Tomahawk 625. Getting everything set up....
    I have a regulator/filter/dryer combo coming off the compressor.

    Iíve attached necessary manual pages below...this is what I gather...

    1) Air coming into the back of the machine, should not exceed 110 psi
    2) I use the regulator on the machine to get to 75-80 psi for cutting
    3) 1 and 2 mean that if I want to run over 110 psi on my shop air for other tools to use concurrently with plasma (eg. 90į die grinder for dross cleanup), Iím gonna need a second regulator dedicated to the plasma line, so I donít have to keep adjusting main regulator?Name:  A89B6BD1-B16F-4DC7-868A-0ECC39FB4D8B.jpg
Views: 246
Size:  147.2 KBName:  19398C39-4D1D-4265-A63B-599DCFD6E6B1.jpg
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  2. #2
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    Re: Regulating hand plasma air supply

    You will find that most air tools say 90psi max. I keep my secondary regulator at 90 and adjust as needed.

  3. #3
    Join Date
    Jun 2014
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    Re: Regulating hand plasma air supply

    Quote Originally Posted by Laggy View Post
    So I got a Lincoln Tomahawk 625. Getting everything set up....
    I have a regulator/filter/dryer combo coming off the compressor.

    Iíve attached necessary manual pages below...this is what I gather...

    1) Air coming into the back of the machine, should not exceed 110 psi
    2) I use the regulator on the machine to get to 75-80 psi for cutting
    3) 1 and 2 mean that if I want to run over 110 psi on my shop air for other tools to use concurrently with plasma (eg. 90į die grinder for dross cleanup), Iím gonna need a second regulator dedicated to the plasma line, so I donít have to keep adjusting main regulator?Name:  A89B6BD1-B16F-4DC7-868A-0ECC39FB4D8B.jpg
Views: 246
Size:  147.2 KBName:  19398C39-4D1D-4265-A63B-599DCFD6E6B1.jpg
Views: 243
Size:  151.6 KB
    To answer your question- Yes. if you want to maintain two different output pressures from your compressor you are going to need two separate regulators.

  4. #4
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    Jul 2016
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    Re: Regulating hand plasma air supply

    I think Iím gonna keep it simple cause Iím stupid. Iím never really going much above 90psi. Not looking to just throw money in the trash these days even if itís on a $20 regulator. Thanks for responses.

  5. #5
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    Re: Regulating hand plasma air supply

    I don't think it's a waste if you get a filter/regulator because what you really need is "clean" regulated air, especially when it concerns water vapor. Depending on the length of your hoses and size, your regulated line may not be the same pressure at the machine as the regulator, a regulator at the machine fixes that. All my shop air is regulated, filtered and has water reduction methods built in, but my plasma still has the regulator/filter on the back.
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  7. #6
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    Re: Regulating hand plasma air supply

    If you keep your air at 90 coming off the compressor, it should have an easy time running 75 at the plasma cutter. I never have air starvation issues with mine. Just a simple 80gal compressor.

  8. #7
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    Re: Regulating hand plasma air supply

    I would put a dedicated water separator on anything to do with a plasma torch. Something like this or similar.

    https://www.tenaquip.com/product/mot...4aAhNLEALw_wcB

  9. #8
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    Re: Regulating hand plasma air supply

    This is what I use on my CNC plasma table to dry the incoming air, I reverse the flow and fill it with silica gel. There is a kitty liter that is silica gel for a cheap filling.

    https://www.lowes.com/pd/A-O-Smith-A...tem/1000576415
    similar to how I do it. but I have a bigger dryer.

    this one shows the larger filter I use for the plasma.
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