What's inside a Thermal Expansion Valve TXV - how it works hvac

The video explains the role of expansion valves in refrigeration systems, focusing on a T2 thermal expansion valve. It covers the valve's components, such as the power head, capillary tube, and sensing bulb, and their materials. The video details how expansion valves regulate refrigerant flow based on superheat, preventing liquid refrigerant from damaging the compressor. It includes a demonstration of disassembling the valve to show its internal parts and explains the mechanism of pressure and flow control. Finally, it discusses adjusting the superheat and tuning the valve for optimal performance.

Describe the components found in a T2 thermal expansion valve.

What is the primary function of expansion valves in a refrigeration cycle?

What happens to the refrigerant as it passes through the expansion valve?

Explain the role of the diaphragm in the expansion valve.

How does the sensing bulb in the expansion valve function?

What is the significance of the orifice assembly in the expansion valve?

How can the superheat be adjusted in an expansion valve?