Results 1 to 3 of 3

Thread: Silvia OPV Adjustment

  1. #1
    Join Date
    Jun 2009

    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.


  2. #2
    Senior Member
    Join Date
    Oct 2009

    Re: Silvia OPV Adjustment


    plenty of info on this thread 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
    Join Date
    Jun 2009

    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.

Similar Threads

  1. Silvia OPV adjustment
    By Hildy in forum Brewing Equipment - Midrange ($500-$1500)
    Replies: 2
    Last Post: 14th May 2013, 02:43 PM
  2. BZ35 pressure adjustment
    By Shs in forum Brewing Equipment - Extreme Machines ($3000+)
    Replies: 7
    Last Post: 22nd September 2011, 10:06 AM
  3. Silvia pump pressure adjustment
    By SamR in forum Brewing Equipment - Midrange ($500-$1500)
    Replies: 2
    Last Post: 15th March 2008, 12:25 AM
  4. Cimbali Adjustment - on or off?
    By cjhfield in forum Grinders
    Replies: 7
    Last Post: 8th February 2007, 05:16 PM
  5. Nemox OPV adjustment
    By telemaster in forum Brewing Equipment (non-machine specific)
    Replies: 3
    Last Post: 11th October 2006, 09:39 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts