Our T17 electric ball valve actuator is an innovative 90° quarter-turn actuator for heating/cooling system automation. There is no motor used inside this T17 actuator. Instead, we use two of our thermo-electric actuators. The wax inside the thermo-electric actuators expands as PTC heats up and pushes the piston outwards. Then the thermo-electric actuator drives the gear to rotate to open or close the valve. Check this post to learn more about the working principles of our wax-driven products.

One thermo-electric actuator is responsible for clockwise rotation and the other is responsible for counter-clockwise rotation. The linear motion of the thermo-electric actuators is converted into rotary motion through the gear structure and then drives the ball valve to open or close.