Thermostat, coolant - V25-99-1713 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. TIPO (160_)
2. REGATA (138_)
3. REGATA Saloon (138_)
4. PRISMA (831_)
5. DELTA I (831_)
6. DELTA � (831_)
7. TEMPRA (159_)
8. RX-7 II (FC)
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11. TEMPRA S.W. (159_)
12. TEMPRA SW (159_)
13. SUNNY I (B11)
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18. SUNNY I Traveller (B11)
19. PULSAR I Traveller (B11)
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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.