THERMOSTAT COOLANT FOR PEUGEOT D8BD9AD9BDJYDHYDHXDJZ/TEXUD9DHWXUD9TEWJZ 1.9L SWAG 70 91 2776

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. C15 Van (VD_)
2. ZX (N2)
3. 309 II (3C, 3A)
4. 309 Mk II (3C, 3A)
5. 405 I (15B)
6. 405 I Saloon (15B)
7. 405 � (15B)
8. 405 II (4B)
9. 405 II Saloon (4B)
10. 405 Mk II (4B)
11. 405 I Break (15E)
12. 405 � Estate (15E)
13. 405 II Break (4E)
14. 405 Mk II Estate (4E)
15. ZX Break (N2)
16. ZX Estate (N2)
17. XANTIA (X1_, X2_)
18. 806 (221)
19. ULYSSE (220_)
20. 406 (8B)
21. See more in applications

The principle of the thermostat work

The classic SWAG 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.