Expansion Tanks are essential components in a vehicle’s cooling system, designed to accommodate the thermal expansion of coolant as engine temperatures rise. A coolant expansion tank helps maintain proper pressure by allowing heated coolant to expand and move into the reservoir, preventing stress on the radiator and hoses. This system works in conjunction with a radiator overflow tank, which captures excess fluid and returns it to circulation once temperatures stabilize.
A coolant reservoir ensures a steady supply of coolant and helps prevent air pockets that could disrupt flow or cause overheating. When a coolant tank is overflowing, it often indicates a pressure imbalance or cooling system issue, highlighting the importance of a properly functioning expansion tank. In broader thermal systems, a water expansion tank or thermal expansion tank performs a similar role by managing volume changes in pressurized water systems, maintaining consistent pressure, and protecting system components from damage.
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