Thermostat, coolant - V30-99-0394-1 VEMO

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. THEMA (834_)
2. GAMMA (830_)
3. GAMMA Coupe (830_)
4. T2/LN1 Van
5. T2/LN1 Platform/Chassis
6. T2/LN1 Dump Truck
7. T2/LN1 Cab with engine
8. VARIO Platform/Chassis
9. VARIO Van
10. VARIO Dump Truck
11. VARIO Bus
12. VARIO Cab with engine
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14. T2/L Van
15. T2/L Platform/Chassis
16. LP
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The principle of the thermostat work

The classic VEMO 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.