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Flat shower screen for Rancilio Silvia espresso machine.
Silvia is shipped with a large hex bolt that projects below the screen because it is more durable in heavy commercial use and commercial Rancilio machines, are more forgiving of uneven coffee distribution in the basket (because of pre-infusion, water flow control and deeper commercial basket).. Silvia simply carries through this same Grouphead part that is used in the commercial machines.
In Italy, where hard firm tamping is generally not used, the bolt doesn't destroy the integrity of the puck because the untamped coffee is more forgiving than the tamped puck.
Benefits of the flat surface:
When using the hard firm tamp method, the flat screen removes the risk of penetrating the hard coffee puck and the integrity of the puck is preserved.
You can clean the screen and save water by just wiping the flat screen with clean paper towel and flushing a small amount of water through the machine. Saving water will increase the number of cups you can brew on a single water tank.
Just a better looking screen for your beautiful Miss Silvia so make your shower screen flat.!!!
To clean the screen, soak in hot water with a small amount of dishwasher detergent and you will have shiny new-looking parts. Backflush also can be done with dishwasher detergent and hot water from the boiler
Note: To prevent any chance of screw lock, I am using a high-grade stainless steel screw. You will have to use a good short Phillips screwdriver, do not try using a long screwdriver, do not over tighten the screen, and clean your machine regularly.
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Here are some pictures to eliminate the confusion when reinstalling.
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Rancilio Silvia, nice clip.
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In this Clip you can see how the extraction becomes lighter and lighter, meaning more and more unwanted taste.
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