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  1. Gaggia Forum
    Hi all, Fitted a replacement opv valve on my gaggia classic pro 2019 model and set it to 6 bar it was working beautifully for a while, however Iโ€™ve had it boxed away for a little while and wanted to get it back out again and calibrate pressure etc. upon testing with a guage that goes into the...
  2. Gaggia Forum
    i understand from factory there is no easily adjustable opv valve inside it, how easy would it be to install one/ adjust the one that is already in there.
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