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Thread: Silvia OPV Adjustment

  1. #1
    Member
    Join Date
    Jun 2009
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    37

    Silvia OPV Adjustment

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hey Folks,

    I want to adjust the OPV on my silvia but it does not look as though it is the (easily) adjustable type. Im not sure on the year of manufacture.

    I have read that you can place a teflon washer on the connection of the OPV to the boiler to reduce the force required to open the OPV but details on this are scant. I know that a couple of users have successfully done this mod to the silvia.

    I was wondering what size and thickenss of teflon washer is recommended for this adjustment?

    For some info, I checked the pressure and im getting 11 bar at the group which sounds like a typical value for the machine.

    If anyone can help it would be much appreciated.

    FP.

  2. #2
    Senior Member
    Join Date
    Oct 2009
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    Australia
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    675

    Re: Silvia OPV Adjustment

    fancypants,

    plenty of info on this thread http://coffeesnobs.com.au/YaBB.pl?num=1161407746 the teflon washer was from coffeeparts. Maybe try PMing rayzurhed for more info.

    From memory the newer silvias have an adjustable OPV, the older models have to use other means, like washers to reduce the pressure.

    Let us know how you go.

  3. #3
    Member
    Join Date
    Jun 2009
    Posts
    37

    Re: Silvia OPV Adjustment

    Thanks Lacehim.

    I rang coffeeparts and was directed straight to the appropriate part on their website. Interestingly, its from a steam assembly of another machine.

    I ordered the spacer and it will hopefully arrive some time this week. Ill let everyone know how the adjustment goes. From the other thread, Im hopeful of good results.

    Thanks again.



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