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Expansion Valves

Expansion valves

are located at the inlet for the evaporator, opening and closing to allow the free flow of refrigerant as and when it is needed. If too much was allowed through then it would freeze, while not enough would mean that it doesn't cool the system effectively and you risk your engine overheating and causing serious - even permanent damage. Expansion valves control the amount of refrigerant using a measuring rod that moves up and down in the fluid, in turn opening and closing the expansion valve to ensure that the right amount is provided to the evaporator. Like most cooling and heating parts, expansion valves are likely to wear as time goes by meaning that they may need to be replaced if the engine temperature starts to fluctuate. New cooling and heating parts are available to order online at Car Parts 4 Less, and our parts finder tool will ensure that you get the best parts for your car and budget. We also offer a fast and free delivery service to customers in mainland Britain, so order online today from
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