Description
The York S1-025-53929-000 Thermal Expansion Valve is a metering component designed for refrigeration circuits that use R454B coolant. It regulates refrigerant flow entering the evaporator based on load conditions, maintaining controlled superheat to ensure complete vaporization inside the coil in HVAC systems. Installed in split cooling and heat pump systems, it stabilizes evaporator operation, prevents liquid refrigerant from reaching the compressor, and supports efficient heat transfer between indoor and outdoor units. It is applied in residential and commercial air conditioning systems where precise refrigerant control is required for consistent cooling performance and system stability.
