Thermostat, coolant - 40 90 4773 SWAG

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 A TR (S83)
2. CORSA A Hatchback (S83)
3. KADETT C City
4. KADETT C
5. K 180 C
6. KADETT C Coupe
7. KADETT C Estate
8. KADETT D (31_-34_, 41_-44_)
9. KADETT D Estate (35_, 36_, 45_, 46_)
10. KADETT E Hatchback (T85)
11. KADETT E (T85)
12. MONZA E (T85)
13. KADETT E Estate (T85)
14. KADETT E Convertible (T85)
15. VECTRA A Hatchback (J89)
16. ASCONA C (J82)
17. ASCONA C Hatchback (J82)
18. VECTRA A (J89)
19. REKORD E (17_, 11_, 14_, 16_, 18_, 19_)
20. REKORD E Estate (61_, 66_, 67_)
21. See more in applications

The principle of the thermostat work

The classic SWAG 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.