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Posts Tagged: car expansion valves

Test car thermostatic expansion valve

Test car thermostatic expansion valve Determine which type of expansion valve you have There are two types of car expansion valves: capillary tube and block style expansion valves. Both types meter liquid refrigerant into the evaporator based on the temperature of the exiting refrigerant gas. A capillary tube expansion valve uses a remote sensing bulb that’s firmly attached to the evaporator outlet. The gas in the sensing bulb and capillary tube expands or contracts based on the temperature of the exiting refrigerant. The gas opens or closes the port on … Read More


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