Originally posted by level3ninja
View Post
Announcement
Collapse
No announcement yet.
Making a portafilter gauge?
Collapse
X
-
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 knowLast edited by Mb21; 7 June 2019, 10:03 PM.
- Flag
Comment
-
-
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.
- Flag
Comment
-
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.Originally posted by Dimal View PostIt 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.
- Flag
Comment
-
With respect, asked and then answered by one of the Forum's Oracles.Originally posted by ermat View PostNot 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.
- Flag
Comment

Comment