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  1. #1
    Join Date
    Aug 2017
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    Testo 557 vacuum gauge

    Just did a check of a BluVac and Testo 557 teed into recovery tank and pulled vacuum. Ill try to post pics, but not much to see, the 557 was no more than 6 microns off. In the 100 micron range it was less than 2 microns off. So it looks as if Testo is doing it right now.

    Sent from my SM-T713 using Tapatalk

  2. #2
    Join Date
    Aug 2006
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    Mixing oil and fire with a big spoon.
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    Sooooo, if Testo is finally catching up to BluVacs standard, is there a reason to use anyone elses in the first place?
    Don't step on my favorite part of the Constitution just to point out your favorite part.

    Political Correctness is forced on you because you have forgotten decency.

  3. #3
    Join Date
    Mar 2007
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    In the Conservatory with a Lead Pipe
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    Can you piggy back them on a real system not just a new coil and lineset or tank test?
    Is like to see that.

  4. #4
    Join Date
    Jul 2014
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    Sarasota, Florida
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    Testo finally moved it out of the manifold and made it external. Now it won't get compromised by oil and $hit

  5. #5
    Join Date
    Aug 2017
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    Thread Starter
    Quote Originally Posted by itsiceman View Post
    Can you piggy back them on a real system not just a new coil and lineset or tank test?
    Is like to see that.
    Why? Would that change anything? They were compared using a tee on one valve of a cylinder while the vacuum pump was connected to the other valve. This proves they read nearly the same when subjected to the same level of vacuum.

    Sent from my SM-T713 using Tapatalk

  6. #6
    Join Date
    Mar 2007
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    Yes it changes a lot.
    A Fieldpiece gauge would track along a BV on a dry tank too.

  7. #7
    Join Date
    Apr 2017
    Location
    Redwood City, CA
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    I use the micron gauge on my 557’s, but I don’t think it is the most accurate. I need to buy a bluvac and get away from pulling from a manifold.

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