THERMOSTAT COOLANT FOR VOLVO 960/Kombi/Break/II/Mk/Rural 850 S40 V40 S70 V70 GATES TH26590G1

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. 960 (964)
2. 960 Kombi (965)
3. 960 Break (965)
4. 850 (854)
5. 850 Estate (855)
6. 850 Rural (855)
7. 960 II (964)
8. 960 II Saloon (964)
9. 960 Mk II (964)
10. 960 II Estate (965)
11. 960 Mk II Estate (965)
12. 960 II Rural (965)
13. LAGUNA I (B56_, 556_)
14. LAGUNA I Grandtour (K56_)
15. LAGUNA I Nevada (K56_)
16. LAGUNA I Estate (K56_)
17. S40 I (644)
18. S40 I Saloon (644)
19. V40 Estate (645)
20. SAFRANE II (B54_)
21. See more in applications

The principle of the thermostat work

The classic GATES 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.