Rancilio Silvia Mega-Mod part 9 Boiler insulation

by | Jun 20, 2018 | diy-coffee | 2 comments

Avi's Silvia Mega-Mod

My way to a better coffee...

DISCLAIMER - Important!

Silvia boiler and its pipes come none insulated.
This waste energy and heats up surrounding components.

Pre-Infusion switch on control box

Boiler insulation schematic drawing

Adding a silicone sponge (which stands high temperature as 250C/480F) as insulation, helps to better preserve energy and protect other components.

You need to use closed cell Silicone sponge with 1/4″ (~6mm) and 1/8″ (~3mm) thickness.

tipTip: From a sheet of around 350x220mm (13.8x8.7″) you will be able to cut all needed covering parts.

The boiler was wrapped with a 1/4″ thick. sheet and another sheet was used for the flange. The boiler top has 2 circular layers of 1/4″ thick. that has cuts in it to fit the thermostats, heater contacts and thermocouple wire. Attaching the sponge sheets was done by using standard Nylon cable ties. Above you can review a drawing that shows the boiler insulation structure.

To help figure out the cutting dimensions, here are some important V3 boiler dimensions:
– boiler diameter is 80.5mm (3.17″) it is a little bit conic.
– boiler height is 82.5 mm (3.24″) to flange, 77.5 mm (3.05″) to surrounding bolts
– boiler flange diameter is ~101 mm (3.98″)

Out of the boiler, I also added Silicon sponge to the steam pipe, to the grouphead and to the OPV part. Adding insulation to the steam pipe reduced the temperature of the cup preheating plate, but this is not a problem since I always pour hot water to the cups to warm it prior of brewing.

Comments, remarks and updates are welcome.
Some will be published, with hidden sender's details.

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Did it save you time and trouble?
If yes, please consider donating some $$$ to help me cover the hosting cost involved. Thanks

To make a donation, please click the following PayPal button:

Copyright © Schneor Design. All rights reserved. Do not copy without written consent from the author.

2 Comments

  1. Max B.

    Hey – did you make a template for cutting the insulation parts? It’d be amazing if you posted a PDF of it for others to use. Great blog by the way! 🙂 Max.

    Reply
    • Avi Schneor

      Hello Max and thanks for your comment.
      No, I didn’t make any template as I made only 1 set of insulation parts without production considerations. Thanks.

      Reply

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electric hazard sign

Disclaimer

1. Silvia runs on high voltage.

Any modification made to your Silvia may cause damage to your equipment and harm to yourself or to others. 
Any modification made to your Silvia will void manufacturer warranty.
None of the following mods is recommended by me nor by the manufacturer, Rancilio. 
These pages show only my personal experience and know-how.
If you follow any of the mods, you do it on your own risk and responsibility.

2. Copyright © 2011 Avi. All rights reserved. 

Content including all text and images in part or in whole may not be reproduced, retransmitted, stored, distributed, disseminated, sold, published, broadcast or circulated in any medium
without written consent of the author

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