Fiorenzato F4 A/Nano Grinder Burr Set - 58mm expobar/expobar-office-group Expansion valves like this one

Expansion valves like this one bleed off excess pressure in the hydraulic circuit — if you notice brew pressure creeping too high

Fits: La Marzocco installations requiring an in-line check valve

The Dream's PID also includes advanced features like temperature and offset control

Fits: La Marzocco drain cup assemblies

Fiorenzato F4 A/Nano Grinder Burr Set - 58mm expobar/expobar-office-group Expansion valves like this oneFiorenzato F4 Nano 58mm Flat Burr Set Hardened steel flat burrs sized 58 mm outside diameter x 33. 4 mm inside diameter, 8. 6 mm thick, three hole mount, right hand rotation rated to last up to 370 kg (815 lbs.) of coffee. SPECIFICATIONS Outside diameter: 58 mm Inside diameter: 33. 4 mm Thickness: 8. 6 mm Material: standard hardened steel Rated life: up to 370 kg (815 lbs.) COMPATIBILITY Fits: Fiorenzato F4 M. C. (new version), F4A, F4A V220 110, F4E,