The Unique Properties of the Heat Motor Result in a Consistent and Precise Response to the Cooling System's Needs.
The heart of the Stant® thermostat is the ELAC® heat motor. The unique properties of the heat motor result in a consistent and precise response to the cooling system's needs. This is achieved through the use of a precisely formulated, thermally expansive wax fill that is calibrated to operate within OEM requirements. The Stant® heat motor is powered by a precisely formulated thermal responsive wax pellet in a heat conducting copper cup equipped with a stainless steel piston inside an elastomeric boot.
The exact length of the stainless steel piston assures the prompt and precise operation of the thermostat valve. Each manufacturing process is rigidly controlled with world-class quality controls. Then a 100% calibration is conducted for each heat motor to guarantee quality and performance.
Finally, the heat motor is placed in a stainless steel assembly consisting of a valve, flange, bridge and spring. The completed assembly provides a securely sealed, heat responsive valve that keeps engine temperatures within original equipment specifications.
The Stant® thermostat design forms more material at the bridge adding more strength to the top. The flange is made without a step in order to fit newer vehicles. The bottom strap or frame has the same width but is formed for added strength and to firmly hold the spring in place. The completed assembly provides a securely sealed, heat responsive valve that keeps engine temperatures within original equipment specifications.