Thermostat, coolant - 352317100950 MAGNETI MARELLI

Thermostat is a device for maintaining a static (constant) temperature, as its name implies. There are thermostats of different designs in many devices and mechanisms, from water heaters to refrigerators. There is also a thermostat in a car's internal combustion engine (liquid-cooled, of course). In a car, the thermostat regulates the temperature of the coolant (antifreeze): it accelerates the warm-up of a cold engine and provides heat removal from the hot one. Therefore, the engine works more efficiently and more comfortably for the driver, especially in winter - without a thermostat, the stove would usually blew cold air.

1. DOBLO Box Body/MPV (223_)
2. DOBLO MONOCAB (223_)
3. GRANDE PUNTO (199_)
4. PUNTO (199_)
5. PUNTO EVO (199_)
6. CORSA D Hatchback Van (S07)
7. ASTRA H Estate Van (L70)
8. ASTRA H Van (L70)
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11. IDEA (350_)
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16. CORTINA Estate Estate
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19. ASTRA H Estate (A04)
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The principle of the thermostat work

The classic MAGNETI MARELLI brand Thermostat, coolant is a movable valve that moves due to a change in the external environment - heating or cooling of antifreeze. The thermostat is made of a thermoelement filled with a substance resembling wax in structure - ceresin, with the addition of copper powder, graphite or aluminum for better thermal conductivity. At a certain temperature of the antifreeze, ceresin expands, opening the thermostat valve. When the motor cools down, ceresin contracts and the thermostat closes again.