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  1. #27
    Join Date
    Jun 2002
    Location
    south jersey
    Posts
    1,105
    Quote Originally Posted by mark beiser View Post
    I have a couple like that mounted on thumbscrew type core depressors.
    http://www.cdvalve.com/product-categ.../cd2070/10-169

    I mostly use them for getting oil pressure readings on simi-hermetic compressors.
    The depressor lets me open the valve after connecting the gauge, and close it before removing it, so there is almost no mess made.
    I did not know these thumb screw depressors existed. I think I may have to get a few. Any common suppliers carrying them or are they only online?
    You need to put the phone down and get back to work!

  2. #28
    Join Date
    Mar 2007
    Location
    wedged in freezer shelf
    Posts
    6,951
    On the thumb screw ones release the pressure on your hose connection otherwise your oring blows out
    “If You Can Dodge A Wrench You Can Dodge A Ball”

  3. #29
    Join Date
    Nov 2010
    Location
    MN
    Posts
    147
    Quote Originally Posted by jnsrose View Post
    I did not know these thumb screw depressors existed. I think I may have to get a few. Any common suppliers carrying them or are they only online?
    C & D makes them.

  4. #30
    Join Date
    Mar 2007
    Location
    pittsburgh, pa
    Posts
    542
    Quote Originally Posted by jnsrose View Post
    I did not know these thumb screw depressors existed. I think I may have to get a few. Any common suppliers carrying them or are they only online?
    I get them at Johnstone supply.

    Part #H24-849.


    And watch when you remove them, as already mentioned, the little o-ring can blow out real easy (they include spares).

  5. #31
    Join Date
    Jan 2008
    Location
    Texas
    Posts
    1,885
    I had one many years ago but was not too impressed, constantly adj. I think I got mine at Johnstones Supply.

  6. #32
    Join Date
    Aug 2004
    Location
    North Richland Hills, Texas
    Posts
    14,915
    Quote Originally Posted by itsiceman View Post
    On the thumb screw ones release the pressure on your hose connection otherwise your oring blows out
    Quote Originally Posted by PMARS2345 View Post
    C & D makes them.
    Quote Originally Posted by 76olds View Post
    I get them at Johnstone supply.

    Part #H24-849.


    And watch when you remove them, as already mentioned, the little o-ring can blow out real easy (they include spares).
    The ones I linked in my previous post don't have the o-ring blowout issue, because the valve can be back seated.
    After disconnecting, you can crack the valve open slightly to slowly release the pressure held in the tube/hose.
    They are not the same ones 76olds gave a Johnstone part number for.

    http://www.hvacr-tools.com/product/c...or-back-seated
    If more government is the answer, then it's a really stupid question.

  7. #33
    Join Date
    Mar 2001
    Posts
    1,499
    Used em for years on critically charged cascade systems (blood and tissue freezers) & ice machines. They're in my Veto.
    One way to outthink people is to make them think you think. They'll think you're not really thinking what you're trying to get them to think you think...........

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