overflow tank
Surplus fluid holder
An overflow tank is a reservoir that catches excess fluid when a system's primary container reaches capacity.
In automotive contexts, the coolant overflow tank receives antifreeze that expands when hot and returns it to the radiator as it cools: Check the overflow tank if your engine is overheating.
Similar tanks exist in plumbing, aquariums, and industrial equipment to prevent spillage or pressure buildup.
- cooling systemHeat management mechanism
- reservoirLarge water storage basin
- coolantTemperature-regulating fluid
- radiatorHeat transfer device
- radiator capSeals engine coolant reservoir
expansion · surge · spill · liquid · antifreeze · cap · pressure · heat buildup · engine · check engine · heating · water · water pump · plastic · hose · bubble · hot · steam
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