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. 406 (8B)
2. 406 Saloon (8B)
3. 406 Break (8E/F)
4. 406 Estate (8E/F)
5. XSARA PICASSO (N68)
6. XSARA (N1)
7. XSARA Break (N2)
8. XSARA Estate (N2)
9. BERLINGO / BERLINGO FIRST MPV (MF_, GJK_, GFK_)
10. BERLINGO MPV (MF_, GJK_, GFK_)
11. PARTNER MPV (5_, G_)
12. PARTNER ESCAPADE MPV (5_, G_)
13. PARTNER (5_, G_)
14. RANCH MPV (5_, G_)
15. GRAND RAID MPV (5_, G_)
16. PARTNER PATAGONICA / URBANA MPV (5_, G_)
17. BERLINGO / BERLINGO FIRST Box Body/MPV (M_)
18. BERLINGO Box Body/MPV (M_)
19. 307 (3A/C)
20. C5 I (DC_)
21. See more in applications

The principle of the thermostat work

The classic 3RG 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.