Thermostat, coolant - TH7069.83J CALORSTAT by Vernet

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. MEGANE II (BM0/1_, CM0/1_)
2. MEGANE II Estate (KM0/1_)
3. MEGANE II Grandtour (KM0/1_)
4. MEGANE II Sport Tourer (KM0/1_)
5. MEGANE II Coupe-Cabriolet (EM0/1_)
6. SCENIC II (JM0/1_)
7. TRAFIC II Bus (JL)
8. TRAFIC II Van (FL)
9. TRAFIC Van (FL)
10. TRAFIC II Platform/Chassis (EL)
11. TRAFIC II Rodeo (EL)
12. VIVARO A Bus (X83)
13. VIVARO A Van (X83)
14. PRIMASTAR Bus (X83)
15. PRIMASTAR Van (X83)
16. MEGANE II Saloon (LM0/1_)
17. VIVARO A Platform/Chassis (X83)
18. GRAND SCENIC II (JM0/1_)
19. See more in applications

The principle of the thermostat work

The classic CALORSTAT by Vernet 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.