York S1-025-45292-000 Expansion Valve

The York S1-025-45292-000 is an OEM Thermostatic Expansion Valve (TXV) engineered for high-precision refrigerant metering in R-410A air conditioning and heat pump systems. Featuring a 3/8" x 5/8" ODF sweat connection, this 4-ton expansion valve is a critical replacement component for maintaining optimal superheat levels and protecting compressors from liquid slugging. As a factory-authorized York HVAC part, the S1-025-45292-000 is designed to match the specific flow characteristics of York, Luxaire, and Coleman evaporator coils, ensuring the thermal efficiency of the refrigeration cycle remains within manufacturer specifications. Field technicians typically utilize this hard-shutoff TXV in residential and light commercial split systems to improve seasonal energy efficiency. The robust brass construction and balanced port design allow for reliable operation across varying ambient temperatures and load conditions, making it the standard choice for professional HVAC maintenance and TXV replacement projects.

• Precise Refrigerant Control: Optimizes R-410A flow into the evaporator, preventing efficiency drops during peak loads.
• OEM Compatibility: Genuine York S1-025-45292-000 ensures exact fitment for 4-ton 1HA0408, 1HA0451, and 1LD0407 units.
• System Protection: Effectively manages superheat to prevent liquid refrigerant from returning to the compressor.
• Standardized Connections: 3/8" x 5/8" ODF external dimensions simplify field brazing and retrofit installations.

What are the symptoms of a failing York TXV?
Technicians often observe localized icing on the evaporator, high discharge pressure, or hunting in the refrigeration cycle, which indicates the expansion valve is no longer regulating flow correctly.

Is the S1-025-45292-000 compatible with R-22 systems?
No, this specific 4-ton TXV is calibrated exclusively for R-410A pressure-temperature profiles. Using this valve with R-22 will result in improper refrigerant metering and potential system damage.

How do I verify if this valve fits my York air handler?
Cross-reference the model number of your indoor coil; the S1-025-45292-000 is designed specifically for 48,000 BTU (4 Ton) nominal systems using 3/8" liquid lines and 5/8" suction lines.

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.