THERMOSTAT COOLANT FOR FIAT PANDA/CLASSIC/Hatchback/Van/VAN 500 PUNTO/EVO/PURE VALEO 820935

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. PANDA (169_)
2. PANDA / PANDA CLASSIC (169_)
3. 500 C (312_)
4. PUNTO EVO (199_)
5. GRANDE PUNTO (199_)
6. PUNTO (199_)
7. 500 (312_)
8. YPSILON (843_)
9. MUSA (350_)
10. BRAVO II (198_)
11. RITMO III (198_)
12. PANDA Hatchback Van (169_)
13. DOBLO Platform/Chassis (263_)
14. PRATICO Platform/Chassis (263_)
15. IDEA (350_)
16. YPSILON (312_)
17. MITO (955_)
18. COMBO Mk III (D) Box Body/MPV (X12)
19. PUNTO Hatchback Van (199_)
20. COMBO Box Body/MPV (X12)
21. See more in applications

The principle of the thermostat work

The classic VALEO 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.