ocr: THERMOSTAT An engine is as inefficient when WATER CONTAINER too cold as when too hot; a thermostat is used to keep the engine at the right temperature. - Wax in the thermostat melts and D - h - - GI expands when hot. This pushes ROD against a rod and opens a valve. The hot water then passes through - - L. - - - - WATER the radiator, where it is cooled. - When cold, closing the wax sets and IVA WAX contracts, the valve. Thermostat
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