Details
Rancilio Silvia Expansion/Over-Pressure Valve (OPV) – Complete Assembly
Complete new-version Rancilio Silvia expansion/OPV valve assembly, factory-adjustable up to 10 bar. This is the full valve body with internal spring, gaskets, and o-ring — everything except the compression fitting and nut, which are typically reused from your original valve.
SPECIFICATIONS
- Adjustable up to 10 bar
- 9 mm O.D. barb outlet with 1/8" F and 1/4" F thread fittings
- Includes two copper gaskets (see standalone R_1022 gaskets)
COMPATIBILITY
- Fits: Rancilio Silvia — new/post-2008 version with flexible stainless boiler hose, and older compression-fitting versions using your reused fitting or a new compression fitting
- Works with: recommended outlet hose R_1332
This assembly includes the spring (R_203), valve gasket and gasket holder (R_1023), brass valve body, O-ring, expansion valve nut, and two copper gaskets (R_1022). Not all components are sold separately.
INSTALLATION
Moderate DIY job; Espresso Parts has published a full pressure-adjustment procedure for setting your dispensing pressure once installed.
PRO TIPS
- Newer (post-2008) Silvias use a flexible stainless hose that threads directly into the valve — don't force a compression fitting onto it; check which style boiler connection you have before assuming you need the compression nut.
- If shots run fast and thin at a normal grind/dose, or your pressure gauge won't hold steady, a worn OPV spring or gasket — not the pump — is often the real cause; this complete assembly resets that variable in one shot.
Customer Reviews
Attention CA Residents: Prop 65 Warning
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.