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Making a portafilter gauge?

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  • #16
    Originally posted by level3ninja View Post
    If it's brass I'm happy to convert it to naked for nothing, you pay postage both ways.
    pretty sure it's stainless. I will however keep your offer in mind should I get another cheers

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    • #17
      If it’s stainless find a machine shop / place with lathe and it’s a really quick job. Make it even quicker by taking the portafilter off prior, may need to heat it up the break / melt the threadlocker if it was used.
      If you get stuck let me know
      Last edited by Mb21; 7 June 2019, 10:03 PM.

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      • #18
        Just an update the gauge arrived today from the UK I only requested the slow post option. I have not had the chance to set up and run a test yet but will this weekend should be good to see where it's at.
        Last edited by Hoggy42; 15 June 2019, 07:42 AM.

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        • #19
          I probably should have called the thread (Where can I buy a portafilter gauge)

          Anyway I had the chance to check the pressure on my Expobar Office today I bought this machine about a year ago being told it had just been serviced. A few months back I had some issues which lead me to replace the pump and some other parts, this entire time I have been blind as to what the pressure might be. Having the gauge on this morning revealed it to be running over 14bar a few minor tweaks of the OPV later and 10bar and quite a noticeable change in the result in this mornings brew.

          Such a simple tool for peace of mind I'm sure it will be handy for the Isomac rebuild as well.

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          • #20
            Originally posted by Dimal View Post
            It is a more accurate way to do things but not essential.
            Simulating the flow rate for the way you like to pulls shots, ensures that what you record is optimum for you.
            Without an adjustable valve, you need to set the OPV so that your brew pressure reading is about 1.0Bar +/- 0.25Bar higher than than the so-called ideal of 8.5-9.0Bar...
            That will get you very close.

            Mal.
            Not doubting you for a moment Mal but as I'm also about to make an OPV adjustment on my recently aquired giotto can others confirm my gauge reading at the portafilla will actulally be reading 1 bar lower than reality.

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            • #21
              Originally posted by ermat View Post
              Not doubting you for a moment Mal but as I'm also about to make an OPV adjustment on my recently aquired giotto can others confirm my gauge reading at the portafilla will actulally be reading 1 bar lower than reality.
              With respect, asked and then answered by one of the Forum's Oracles.

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              • #22
                Originally posted by CafeLotta View Post
                With respect, asked and then answered by one of the Forum's Oracles.
                Point taken ��

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