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Posts Tagged: expansion valve auto AC

How expansion valve auto AC works

How expansion valve auto AC works Different types of auto AC Auto AC can use either an expansion valve or orifice tube design. This post explains how an expansion valve auto AC system works. What is an expansion valve? An expansion valve meters the flow of liquid refrigerant into the evaporator where it changes from a liquid to a gas by absorbing heat from the cabin air. The expansion valve can have a remote sensing bulb or an integral sensing device (called an H block). This diagram shows a remote … Read More


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