THERMOSTAT COOLANT FOR FIAT DUCATO/Bus/Van/Platform/Chassis CITROÃ?N RELAY 2.5L TOPRAN 721 118

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. DUCATO Bus (230_)
2. DUCATO Van (230_)
3. JUMPER Bus (230P)
4. RELAY Bus (230P)
5. JUMPER Platform/Chassis (230)
6. RELAY Platform/Chassis (230)
7. BOXER Bus (230P)
8. BOXER Van (230L)
9. BOXER FURGON Van (230L)
10. BOXER Platform/Chassis (ZCT_)
11. DUCATO Platform/Chassis (230_)
12. JUMPER Van (230L)
13. RELAY Van (230L)
14. BOXER Bus (244, Z_)
15. DUCATO Van (244_)
16. DUCATO Bus (244_)
17. JUMPER Bus (244, Z_)
18. RELAY Bus (244, Z_)
19. DUCATO Platform/Chassis (244_)
20. BOXER Platform/Chassis (244)
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The principle of the thermostat work

The classic TOPRAN 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.