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. CORSA D (S07)
2. CORSA Mk II (C) (X01)
3. CORSA B (S93)
4. VITA B (S93)
5. CORSA Mk I (B) (S93)
6. ASTRA G Hatchback (T98)
7. ASTRA G Estate (T98)
8. CORSA D Hatchback Van (S07)
9. ASTRA H (A04)
10. ASTRA G Saloon (T98)
11. CORSAVAN Mk III (D) Hatchback Van (S07)
12. AGILA (A) (H00)
13. CORSA C (X01)
14. VITA C (X01)
15. CORSAVAN Mk II (C) Hatchback Van (X01)
16. CORSA C Hatchback Van (X01)
17. ASTRA H Estate (A04)
18. ASTRA Mk V (H) (A04)
19. TIGRA TwinTop (X04)
20. MERIVA A MPV (X03)
21. See more in applications

The principle of the thermostat work

The classic BGA 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.