Dodge Durango A/C Expansion Valves & Orifice Tubes

An A/C expansion valve is exactly where the magic of turning the heat into the cold actually happens. Refrigerant enters this component as a high-pressure gas and leaves it as a low-pressure liquid. The valve meters this extremely cold liquid into the A/C evaporator. The amount of liquid entering the evaporator core should be precisely regulated. Too much of it and the core will get covered in frost, and freezing cold air will be coming from the vents. If the flow is reduced, you won't have any chill inside your Dodge Durango on hot days.

The expansion valve is controlled by the sensor (sensing bulb) that determines the temperature of the refrigerant leaving the evaporator. When it drops too low, the pressure decreases and the valve closes. When the liquid warms up, the pressure increases and allows the valve to open. This part may fail due to refrigerant leaks and hence lack of lubrication, as oil circulates throughout the system together with refrigerant. It can also get damaged by small metal pieces that may appear in the system as a result of internal compressor breakage. In our Dodge Durango A/C expansion valves selection, you'll find a quality replacement that will restore the proper operation of your vehicle's air conditioner, at a reasonable price.