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  1. #1
    Join Date
    Jun 2016
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    2
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    C & D Schrader Valve Core Removal Tool 1\4 or 5\16 size?

    Hi,
    We are in the US at this time for a few weeks. We need to purchase a C & D Schrader Valve Core Removal Tool and bring it back to Mexico..
    The tool is offered in 1\4 and 5\16 and we do not know what size to buy.
    We have a Marine Mermaid 12000 btu ac unit. It has two Schrader Valves.
    Does the difference in size have anything to do with removing and replacing the Schrader Valve?
    Thank you,
    Chip

  2. #2
    Join Date
    May 2016
    Location
    Australia
    Posts
    45
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    5/16 is for 410A/R32 rated high pressure equipment, 1/4 for everything else.

    5/16 fittings are manufactured so you can't mistakely fit lower pressure rated equipment which has 1/4 fittings.

  3. #3
    Join Date
    Jun 2016
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    2
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    Thread Starter
    Hi,
    Thank you so much for the info. This is exactly what we were looking for.
    Thanks again,
    Chip

  4. #4
    Join Date
    Jun 2003
    Location
    Chicago, IL
    Posts
    6,063
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    As far as I know 5/16 is only used on SOME brands of mini-splits. Everything else uses 1/4" regardless of refrigerant

  5. #5
    Join Date
    May 2016
    Location
    Australia
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    Quote Originally Posted by craig1 View Post
    As far as I know 5/16 is only used on SOME brands of mini-splits. Everything else uses 1/4" regardless of refrigerant
    May be different in my part of the world Craig1 I stand corrected.

    You're saying that certain manufacturers have 1/4 connections on there equipment even for 410A and R32? I have never come across that, always thought 410 high pressure equipment such as gauges had only 5/16.

  6. #6
    Join Date
    May 2016
    Location
    Australia
    Posts
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    Quote Originally Posted by Chip_MX View Post
    Hi,
    Thank you so much for the info. This is exactly what we were looking for.
    Thanks again,
    Chip
    What refrigerant is your equipment Chip?

  7. #7
    Join Date
    Jul 2017
    Posts
    73
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    5/16 for mini splits R410a


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