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A. Positive Crankcase Ventilation (PCV) Valve
B. EVAP Canister Purge Valve
C. Exhaust Gas Recirculation (EGR) Valve
D. Thermal vacuum recirculation valve (EGR TW)
E. Two-way valve
F. Catalytic converter of exhaust gases (for vehicles running on unleaded gasoline)
G. Fuel vapor collection canister (EVAP)
Layout of system elements
