Rancilio Complete Expansion Valve with Threaded Connection rancilio-silvia-v4-parts/rancilio-v4-body Featuring a dual hopper design

Featuring a dual hopper design

Fits: all previous Rancilio Rocky doser-model grinders

catching and directing ground coffee before it's dosed into the portafilter

it sits directly on the boiler and can vent hot steam if removed under pressure

so confirm fitment rather than assuming by brand alone

Rancilio Complete Expansion Valve with Threaded Connection rancilio-silvia-v4-parts/rancilio-v4-body Featuring a dual hopper designRancilio Complete Expansion Valve, Threaded Connection A complete expansion (over pressure) valve for the old Rancilio S and Z series, as well as the Millennium model, both ends are threaded, unlike the R_525 which has a barbed outlet connection. SPECIFICATIONS 3 8" male x 1 4" male BSP thread, both connections threaded COMPATIBILITY Fits: Rancilio S series, Z series, and Millennium INSTALLATION Technician level, plumbed inline on the pump boiler