Posts Tagged: car expansion valves

Test car thermostatic expansion valve

June 21, 2018

Test car thermostatic expansion valve Step 1 Determine which type of car AC expansion valve is used on your vehicle — capillary tube or H-block What a capillary tube expansion valve looks like A capillary tube expansion valve consist of a gas filled dome, gas filled tubing and a remote sensing bulb that’s attached to outlet side of the evaporator coil. The gas in the sensing bulb expands or contracts based on the temperature of the evaporator outlet tubing. The expanding or contracting gas moves a diaphragm in the dome … Read More