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  1. #1
    Join Date
    Nov 2016
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    Huntsville, Alabama
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    Goodman schrader valves are unique..

    What tool do you use to remove valve cores from Goodman resi units? Everyone I talk to says they never saw one. The Goodman dealer said he special ordered one from the factory but couldn't find any information on it.

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  2. #2
    Join Date
    Jul 2019
    Location
    Oklahoma home its in the name
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    997
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    They're not totally unique I thought they were unique to American Standard / Trane
    I I'm trying to get a replacement myself for a 2015 American standard package unit the guys at the Trane distributor don't seem to know anything about them either other than the fact that they can order them. They're not even positive whether or not I will have to pump down the system to change it.

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  3. #3
    Join Date
    Aug 2015
    Posts
    6
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    Coremax valve and tool to replace. Valve is around $60 and tool close to $500. I take them out and put regular access valves. My two cents

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  5. #4
    Join Date
    Dec 2004
    Location
    Chicago area
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    8,742
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    JB makes the valves.

    It is called a core max. You can probably get a pack of 20 for 60 bucks or less.

    I would not bother with the removal tool.

    Remove the gas and replace the core. It threads out.

    Or remove the gas, remove the port segment with pipe and install a standard schrader valve.

    Heres what the core looks like.




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  6. #5
    Join Date
    Dec 2003
    Location
    Citrus County, Florida
    Posts
    2,989
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    Here is the Goodman part number. I bought two valves incase I ran across them in the field.
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    Doug

  7. #6
    Join Date
    Jul 2019
    Location
    Oklahoma home its in the name
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    I just ordered three through United Refrigeration my self. The price was good although far higher than Schrader valves.

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  8. #7
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    5,874
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    The core removal tool is shady to use. It is a quick lock fitting. I would relieve the pressure and replace it.

    I prefer cutting them out and replacing with a standard shraider.

    They are used because they allow more flow thru them than a standard one. This makes it quicker to go down the assembly line


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  9. #8
    Join Date
    Jun 2015
    Location
    Arlington Texas
    Posts
    23
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    Goodman schrader valves are unique..

    I use accutools high flow vacuum rated core depressors to get around having to remove them to evacuate. Or using the expensive coremax tool


    Name:  IMG_7646.jpg
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Size:  190.6 KB


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  11. #9
    Join Date
    Jul 2010
    Location
    napping on the couch
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    Quote Originally Posted by gravity View Post
    The core removal tool is shady to use. It is a quick lock fitting. I would relieve the pressure and replace it.

    I prefer cutting them out and replacing with a standard shraider.

    They are used because they allow more flow thru them than a standard one. This makes it quicker to go down the assembly line


    Sent from my iPhone using Tapatalk
    This. Chop those stupid things out. They really screwed up the cool kids who used core removal tools and fat hoses to evacuate. Now I have to either bust out my leaky 1/4 hoses with depressors in them, or just chop the valves out.

    You could also use core depressor tools and then still use your normal evac set up.
    “Free men do not ask permission to bear arms.”
    -Possibly said by Thomas Jefferson(but true even if he didn't)


    “What one generation tolerates, the next generation will embrace.”
    ― Definitely said by John Wesley

  12. #10
    Join Date
    Jul 2010
    Location
    napping on the couch
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    Quote Originally Posted by Ulises528 View Post
    I use accutools high flow vacuum rated core depressors to get around having to remove them to evacuate. Or using the expensive coremax tool


    Name:  IMG_7646.jpg
Views: 324
Size:  190.6 KB


    Sent from my iPhone using Tapatalk
    Yeah, a couple of these guys.

    But if I ever had one that leaked, I'd probably chop it out(if it were on a small enough pipe) and put a regular valve in.
    “Free men do not ask permission to bear arms.”
    -Possibly said by Thomas Jefferson(but true even if he didn't)


    “What one generation tolerates, the next generation will embrace.”
    ― Definitely said by John Wesley

  13. #11
    Join Date
    Dec 2004
    Location
    Chicago area
    Posts
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    Quote Originally Posted by Ulises528 View Post
    I use accutools high flow vacuum rated core depressors to get around having to remove them to evacuate. Or using the expensive coremax tool


    Name:  IMG_7646.jpg
Views: 324
Size:  190.6 KB


    Sent from my iPhone using Tapatalk
    Whats that goober on the pipe at the base of the CoreMax ports about?


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  14. #12
    Join Date
    Jun 2015
    Location
    Arlington Texas
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    23
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    Quote Originally Posted by heatingman View Post
    Whats that goober on the pipe at the base of the CoreMax ports about?


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    It’s wet rag putty. Just trying to protect the gasket on the high flow cores when brazing in the compressor


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  16. #13
    Join Date
    Apr 2007
    Location
    New Brunswick, Canada
    Posts
    317
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    If the coremax is leaking, you can simply install a swivel tee or adapter over it and save from buying the expensive tool or recovering, brazing a standard schraeder, and evacuating.

    Keep in mind, you will no longer be able to use core removal tools to speed evacuation with this setup, but if it's a packaged or small system is it really that critical?

    Fast, simple and cheap.
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