•  The check valve (two-way) is installed on the charcoal canister protector.

•  Consists of valves and a body.

•  When the charcoal canister discharges evaporative gas, valve A opens, and the gas is released to the atmosphere through port B.

•  When the charcoal canister takes in atmospheric air, valve B opens and intake air enters through port C.

•  If the check valve is flooded with water, valve A closes due to water pressure to prevent water from entering. The end of the hose connected to port C is located in a high position, and air intake occurs at this heightened position.

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