Our Technology

Thermal actuators convert temperature change into mechanical motion. The technology utilized in our thermostatic valves is referred to as phase-change technology. It dates back to the 1930’s when a particular paraffin wax that changed phase from solid-to-liquid, on increasing temperature, and from liquid-to-solid, on decreasing temperature was discovered.

ThermOmegaTech® has incorporated this technology into the Thermoloid® material that makes all our thermostatic valves operate. At the heart of each of our products is a wax blend that expands and contracts at an accurate and repeatable rate. The phase change properties are so precise that they are used as primary reference standards by ASTM for instrument calibration.

How it Works

The Thermoloid® material is sealed inside our actuators by a diaphragm, and as temperature increases above the melting point of the Thermoloid® material, it expands in volume and pushes against a diaphragm, which in turn pushes on a piston. The piston, now in its “hot position”, acts as a valve stem, opening or closing the valve. As the Thermoloid® material cools below its melting point, it compresses and a spring returns the piston and diaphragm to their “cold position”.

The phase change, and resulting in a large volume change, produce motion over a narrow and highly predictable temperature range, and the temperature range at which the phase change occurs can be varied depending on the chemical composition of the Thermoloid® material that is used.

Thermostatic Actuator GIF for Valves

Our Thermoloid® material operates at temperatures ranging from 15°F to 300°F (-9.44°C to 149°C). Because of the gradual transition from solid-to-liquid of this Thermoloid® material, these valves act more like modulating valves rather than quick opening/closing valves.

Our Direct Acting Valves are designed to be open when the wax is in its solid state or the “cold position” while Reverse Acting Valves are open when the wax is in its liquid state or the “hot position”.

As a leader in self-actuated temperature control solutions, ThermOmegaTech® prides itself on the high-quality manufacturing process, problem-solving approach, and innovative engineering techniques used to design and manufacture thermostatic actuators, valves and specialty products in the pursuit of technological advances, while ensuring rapid responses and an individualized customer service experience.

Our product offering includes the following thermostatic valves:

Our self-operating thermostatic technology is an elegant solution, proven highly reliable in various applications, whether in one of our current products or a design customized by our in-house engineering team to meet a customer’s unique needs. We can customize opening/closing temperatures, flow rates, threads, materials, and more. Contact our team to learn more.