York S1-025-45294-000 Expansion Valve

The York S1-025-45294-000 is an OEM thermal expansion valve (TXV) engineered for high-efficiency R410A refrigerant systems. This externally equalized valve features 3/8 x 5/8 ODF solder connections, ensuring a leak-resistant seal in residential and light commercial air conditioning applications. Designed to modulate refrigerant flow based on heat load, it maintains the precise superheat required to prevent liquid slugging and protect the compressor. As a direct replacement part, it ensures the system operates within manufacturer specifications, particularly for York, Luxaire, and Coleman evaporator coils.

Installation requires standard brazing techniques; ensure proper heat sinking to protect the internal diaphragm and sensing bulb during the process. This biflow TXV is optimized for precise metering, providing stable pressure drops across various ambient conditions. For contractors performing a HVAC system repair or addressing TXV troubleshooting issues like hunting or restricted flow, this component provides the mechanical reliability necessary for long-term system performance and energy efficiency.

• Precise Refrigerant Metering: Delivers accurate R410A flow to the evaporator coil, maximizing heat transfer efficiency.
• OEM Compatibility: Precision-fit for York S1-025-45294-000 technical specs, ensuring drop-in replacement without line set modification.
• System Protection: Maintains optimal superheat to extend the service life of the HVAC compressor.
• Durable Construction: Built with high-grade brass and copper to withstand high-pressure R410A environments.

What are the symptoms of a failing York S1-025-45294-000?
Common indicators include evaporator coil icing, high superheat readings, or the compressor running constantly without reaching the setpoint. If the sensing bulb loses its charge, the valve may remain stuck closed.

Is this valve compatible with R22 systems?
No, this R410A expansion valve is specifically calibrated for the pressure-temperature characteristics of R410A refrigerant and should not be used in R22 applications.

Does this TXV include the sensing bulb and mounting hardware?
Yes, this assembly includes the integrated sensing bulb required for monitoring suction line temperature and adjusting refrigerant flow accordingly.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.