D50/Power Ram 50 V6-181 3.0L SOHC (1991)
Rollover/Pressure Relief Valve: Description and Operation
Fuel Check Valve
Check Valve
The rollover or fuel check valve, is used to prevent fuel leaks should the car roll over. This valve is connected in the fuel vapor line (between the
canister and overfill limiter) and is mounted near the filler tube. Under normal conditions, the gasoline vapor passage in the valve is opened, but if roll
over occurs at least one of the two balls closes the fuel passage preventing fuel leaks.