Nuova Simonelli 'Aurelia' Right Boiler to Steam Valve Pipe accessories/servers This sleeve exists specifically because

This sleeve exists specifically because La Pavoni increased group diameter by 2mm in 2001 for better heat retention - if your portafilter feels loose or won't lock in properly on a Millennium-era machine

Older Astoria/CMA

keeping the bar clean

so don't assume a “similar size” burr set from another brand will grind correctly

125 (requires pairing with ring MZ_C106802 when retrofitting older units)

Nuova Simonelli 'Aurelia' Right Boiler to Steam Valve Pipe accessories/servers This sleeve exists specifically becauseNuova Simonelli Aurelia Right Boiler to Steam Valve Pipe OEM steam boiler pipe for the original Nuova Simonelli Aurelia not the Aurelia II or Appia, which use different plumbing. This is the right side pipe; the left hand pipe is S_444. COMPATIBILITY Fits: Nuova Simonelli Aurelia (original, not Aurelia II or Appia) Replaces: Nuova Simonelli part #98030080 INSTALLATION Technician recommended, since it requires draining the boiler and disconnecting