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Home >> Jeep >> 1981 >> Pickup J20, 4WD, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Evaporative Emissions System >> Operation >> Liquid Check Valve

Liquid Check Valve

The liquid check valve incorporates a float and needle assembly. If fuel enters check valve, float will rise and force needle to close vent passage, preventing liquid fuel from entering canister.