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. ASTRA J Sports Tourer (P10)
2. 306 (7B, N3, N5)
3. 306 Saloon (7B, N3, N5)
4. 405 II (4B)
5. 405 II Saloon (4B)
6. 405 Mk II (4B)
7. CORSA D Hatchback Van (S07)
8. CORSA D (S07)
9. AVEO Hatchback (T300)
10. SONIC Hatchback (T300)
11. AVEO Saloon (T300)
12. SONIC Saloon (T300)
13. ASTRA J GTC
14. ASTRA J Coupe
15. 405 II Break (4E)
16. 405 Mk II Estate (4E)
17. ADAM (M13)
18. ASTRA J (P10)
19. ASTRA Mk VI (J) (P10)
20. MERIVA B MPV (S10)
21. See more in applications

The principle of the thermostat work

The classic MEAT & DORIA 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.