Description
The Trane VAL07991 1.5 Ton Thermostatic Expansion Valve 0.31″ ODF x 0.63″ ODF regulates refrigerant flow into the evaporator by adjusting according to temperature and pressure conditions at the outlet, ensuring controlled cooling operation. It operates through a sensing bulb and diaphragm assembly that modulate the valve opening to maintain proper superheat during system activity. Within HVAC systems such as air conditioners and heat pumps, it enables accurate cooling fluid calibration for effective heat exchange. Located between the liquid line and evaporator coil, it supports stable cooling output, balanced system operation, and consistent performance under varying load conditions.
