Abstract: The present invention relates generally to an electronic thermostat. More particularly, the present invention relates to an electronic thermostat configured to operate a valve by using expansion pressure of a thermally expandable material as a heater generates heat, wherein foreign substances are prevented from being accumulated in a guide cap, thus preventing malfunction of the valve from occurring. The electronic thermostat configured to control flow of a coolant by using a piston reciprocating in response to expansion and contraction of a thermally expandable material includes: a casing; a heater; a guide; the piston; a sealing member; a guide cap; and a valve, wherein the guide cap has a discharge hole formed at a lower end thereof.

Abstract: Disclosed are a power connector of a thermostat and a manufacturing method thereof.

Abstract: Disclosed are a power connector of a thermostat and a manufacturing method thereof.

Abstract: Disclosed are a cartridge heater for a thermostat and a manufacturing method of the same.

Abstract: A thermostat apparatus may include a valve body including a first valve, a second valve, wherein the first valve may be integrally connected with the second valve , and a drive portion the drive portion includes a wax case that wax may be charged therein, a piston guide connected to a front end portion of the wax case, a piston that may be slidably inserted into the piston guide and movable in accordance with expansion or contraction of the wax, a semi-fluid that may be charged between the wax and the piston, and a rubber layer that may be formed on an upper end portion surface of the piston to seal a space the piston and an interior circumference of the piston guide.