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. FIESTA III (GFJ)
2. FIESTA Mk III (GFJ)
3. FIESTA Van (F3L, F5L)
4. COURIER Van (F3L, F5L)
5. ESCORT V (AAL, ABL)
6. ESCORT Mk VI (AAL, ABL)
7. ESCORT V Turnier (ANL)
8. ESCORT NOMADE V Turnier (ANL)
9. ESCORT V Break (ANL)
10. ESCORT Mk V Turnier (ANL)
11. FIESTA IV (JA_, JB_)
12. FIESTA Mk IV (JA_, JB_)
13. ESCORT VI (GAL, AAL, ABL)
14. ESCORT Mk VII (GAL, AAL, ABL)
15. 121 III (JASM, JBSM)
16. SOHO III (JASM, JBSM)
17. FIESTA Van (J5_, J3_)
18. COURIER Van (J5_, J3_)
19. KA (RB_)
20. ESCORT '91 Express (AVF)
21. See more in applications

The principle of the thermostat work

The classic SASIC 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.