Canister Purge Volume Control Valve: Description and Operation

EVAP Two Way Valve and EVAP Bypass Solenoid Valve
The EVAP two way valve is installed between the fuel tank and the EVAP canister line.

The EVAP two way valve sends fuel vapor into the EVAP canister corresponding to the pressure inside the fuel tank and vacuum, and it is returned in the fuel tank. The EVAP bypass solenoid valve opens to bypass the two way valve when doing at the EVAP leak check.