Thermostat, coolant - TH38787G1 GATES

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. TOUAREG (7LA, 7L6, 7L7)
2. TOUAREG SUV (7LA, 7L6, 7L7)
3. MULTIVAN V (7HM, 7HN, 7HF, 7EF, 7EM, 7EN)
4. MULTIVAN T5 (7HM, 7HN, 7HF, 7EF, 7EM, 7EN)
5. MULTIVAN Mk V (7HM, 7HN, 7HF, 7EF, 7EM, 7EN)
6. TRANSPORTER V Platform/Chassis (7JD, 7JE, 7JL, 7JY, 7JZ, 7FD
7. TRANSPORTER T5 Platform/Chassis (7JD, 7JE, 7JL, 7JY, 7JZ, 7F
8. TRANSPORTER Mk V Platform/Chassis (7JD, 7JE, 7JL, 7JY, 7JZ,
9. EUROVAN V Platform/Chassis (7JD, 7JE, 7JL, 7JY, 7JZ, 7FD, 7F
10. TRANSPORTER V Van (7HA, 7HH, 7EA, 7EH)
11. TRANSPORTER T5 Van (7HA, 7HH, 7EA, 7EH)
12. TRANSPORTER Mk V Van (7HA, 7HH, 7EA, 7EH)
13. EUROVAN V Van (7HA, 7HH, 7EA, 7EH)
14. KOMBI V Van (7HA, 7HH, 7EA, 7EH)
15. TRANSPORTER V Bus (7HB, 7HJ, 7EB, 7EJ, 7EF, 7EG, 7HF, 7EC)
16. TRANSPORTER / CARAVELLE V Bus (7HB, 7HJ, 7EB, 7EJ, 7EF, 7EG,
17. EUROVAN V Bus (7HB, 7HJ, 7EB, 7EJ, 7EF, 7EG, 7HF, 7EC)
18. TRANSPORTER T5 Bus (7HB, 7HJ, 7EB, 7EJ, 7EF, 7EG, 7HF, 7EC)
19. TRANSPORTER / CARAVELLE Mk V Bus (7HB, 7HJ, 7EB, 7EJ, 7EF, 7
20. CARAVELLE V Bus (7HB, 7HJ, 7EB, 7EJ, 7EF, 7EG, 7HF, 7EC)
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.