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Thread: Portafilter pressure gauge?

  1. #1
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    Portafilter pressure gauge?

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hi all,

    One thing Ive been trusting to luck and/or previous services with the Carimali is the brew pressure. I only have a boiler pressure gauge on the machine, and so no way to check brew pressure without test equipment.

    Before I run out and lay down a cool $100 on a portafilter with gauge, does anyone have any suggestions on alternatives? Does anyone hire these out? Anyone in Melb with a Carimali-compatible one theyd be prepared to rent to me for a day? Or is pressure adjustment likely to be sufficiently regular that its worth just buying one?

    Cheers,

    Dennis

  2. #2
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    Re: Portafilter pressure gauge?

    Does the carimali take a standard 58mm commercial pf?

    From what Ive heard, pressure adjustment isnt likely to be a regular thing, but its nice to be able to check every now and then.

    Cheers,

    Luca

  3. #3
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    Re: Portafilter pressure gauge?

    Yep, 58mm 3 ear design Luca.

    Cheers,

    Dennis

  4. #4
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    Re: Portafilter pressure gauge?

    I made something similar to the picture below for about $30. Besides the gauge, I think the ball valve tap was the most expensive bit. I had a snubber put into the gauge or you could get them liquid filled.
    You dont have to include a tap. It seems the general consensus is that if you are testing pressure without allowing water to escape (like a blind filter) it will show a pressure approx 1 bar higher than if you were allowing water to flow through either a coffee puck, or in my case a ball valve tap.




  5. #5
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    Re: Portafilter pressure gauge?

    Interesting idea Framey. Where did you source a gauge so cheaply? Coffeeparts and such places they are $70 alone.

    Cheers,

    Dennis

  6. #6
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    Re: Portafilter pressure gauge?

    Behmor Brazen - $249 - Free Freight
    I bought mine at a local place called Combustion Instrumentation. I think quite a few places sell pressure gauges, you just have to find one that fits your measurement needs.

    ie 100 kPa = 1 bar so I bought a gauge that measured from 0 to 1600 kPa.

    If you have much trouble finding a relatively cheap gauge let me know and you can borrow mine. I could possibly send the whole thing but with the brass fittings it weighs a fair bit.
    See how you go.



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