Mazda CX-5 Service & Repair Manual: Non Return Valve

Mazda CX-5 Service & Repair Manual / Engine / General / Non Return Valve

Purpose, Function

Assures safety by preventing fuel from returning to the fuel filler opening.

Construction

The non-return valve cannot be removed as it is installed inside the fuel tank.

2WD

AWD
A single valve type has been adopted for the non-return valve.

Operation

Normally, the valve is closed as shown by the dotted line in the figure. When refueling, it opens as shown by the solid line due to the force caused by the flow of fuel. When refueling is finished, the valve returns to the normal valve position by spring force.

Non Return Valve Inspection

WARNING: Fuel is very flammable liquid. If fuel spills or leaks from the pressurized fuel system, it will cause serious injury or death and facility breakage. Fuel can also irritate skin ...

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