The AC expansion valve includes three-point of pressure, which is responsible in regulating the amount of refrigerant entering the evaporator. Those three points include bulb, evaporator and spring. When you reduce the level of cooling, the evaporator and spring work together to close the valve and when you increase the level of cooling the bulb opens the valve using its pressure. This is what actually happening behind increasing and decreasing the level of cooling air in an air conditioning system. The Audi AC expansion valve has the efficiency of sensing the temperature and releasing more refrigerant to cool the temperature and if the temperature gets cool, the Audi AC expansion device decrease the pressure and close the valve.
The Audi AC expansion device in the air conditioning system is very important. So if you sense any problems in cooling, always check with your Audi AC expansion device. If you find any problem try to replace your AC expansion valve at the earliest .Car Parts Warehouse offers a wide selection of Audi car parts. Through our online catalog you can select your Audi A4 A/C expansion device at a reasonable price. You can select your AC expansion device for your Audi A4 model from your place itself since we have Warehouses all over the country. If you are not able to find your Audi A4 A/C expansion device or if you need any information please feel free to call our technical assistance at 1-800-565-5021 and you can also contact us at email@example.com.