Rancilio Complete Expansion Valve with Threaded Connection rancilio-silvia-v4-parts/rancilio-v4-body it sits directly on the

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

so confirm fitment rather than assuming by brand alone

even in periods of peak demand and water usage

8 mm thick ears and is a different part

Rancilio Complete Expansion Valve with Threaded Connection rancilio-silvia-v4-parts/rancilio-v4-body it sits directly on theRancilio 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