Nuova Simonelli Expansion Valve Complete grind/home-semi-commercial this is a likely spot

this is a likely spot to check before suspecting the pump

and some Faema machines as well

This is a straightforward fit-and-forget upgrade for a cracked

it does not come pre-bent

Nuova Simonelli Expansion Valve Complete grind/home-semi-commercial this is a likely spotNuova Simonelli Expansion Valve Complete This complete expansion valve, 1 4" male x 1 4" male, is used in almost every Nuova Simonelli model. Simonelli #72012007. SPECIFICATIONS Dimensions: 59mm overall length, 37mm body length, 22mm hexagonal body Thread Size: 1 4" male x 1 4" male COMPATIBILITY Fits: Nearly all Nuova Simonelli models Replaces: Nuova Simonelli part #72012007 Works with: Machine hydraulic circuit INSTALLATION Moderate difficulty;