Rancilio Silvia Boiler Insulation whole-bean-bulk-grinder-burr-sets/bunn-coffee-grinder-parts Mahlkönig is widely regarded as

Mahlkönig is widely regarded as the gold standard in commercial grinding

Fittings: two vertical 1/8" male BSPP

Metal-on-metal seal (no gasket at seat)

Circulatory heat exchanger pipe running from the boiler to the group head

Rancilio Silvia Boiler Insulation whole-bean-bulk-grinder-burr-sets/bunn-coffee-grinder-parts Mahlkönig is widely regarded asRancilio Silvia Boiler Insulation Introduced with the Silvia "M" model to improve thermal stability, this foam wrap surrounds the boiler and reduces temperature fluctuations during use. COMPATIBILITY Fits: all versions of the Rancilio Silvia INSTALLATION A simple DIY wrap install with the black side facing out and secure the two ends with the built in Velcro closure. PRO TIPS Line up the small hole with the OPV expansion valve fitting and the