Description
The Heatcraft Refrigeration 29311803 Thermal Expansion Valve is a refrigerant metering part that precisely controls the amount of liquid refrigerant entering the evaporator coil to maintain consistent cooling. It is used in commercial refrigeration units, air conditioners, and heat pumps within HVAC systems that operate with R404A refrigerant. By adjusting refrigerant flow based on temperature and load, the valve ensures proper evaporator pressure, prevents overfeeding or starving of the coil, and supports efficient heat transfer. Within the system it supports protecting the compressor and maintaining stable indoor air.
