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Adjusting Rancilio S24 OPV

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  • Adjusting Rancilio S24 OPV

    I checked brew pressure on my 2004 Rancilio S24 by ULKA pump OPV overflow/bypass flow chart.
    27cc/30 sec = 54cc/min which correlates to 12-15 bar median/avg ~13.5 by their chart.
    I have seen Silvia adjustments, with their 2 OPV, and this looks like neither.
    I was wondering if anyone had tips on how this one is tweaked?
    Is it even adjustable, replaceable or can one add a second one inline?
    Looks like I would possibly need copper gasket/spacer rings if it isadjustable
    Thanks
    Attached Files
    Last edited by wrichad3; 29 May 2022, 12:48 AM.
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