York S1-025-45293-000 Expansion Valve

When you're troubleshooting a 5-ton split system or rooftop unit that's short-cycling or hitting high-pressure limits, the York S1-025-45293-000 Expansion Valve is the precise OEM replacement required to restore balanced refrigerant flow. Designed specifically for R410A refrigeration systems, this Thermostatic Expansion Valve (TXV) utilizes a 3/8" x 5/8" ODF sweat connection, ensuring a leak-proof, high-integrity joint during field brazing. As a veteran tech knows, maintaining exact superheat is non-negotiable for compressor longevity; this valve manages the mass flow of liquid refrigerant into the evaporator with high precision, preventing liquid slugging and optimizing heat transfer across the coil. Whether you are performing a York TXV replacement on a J10ZFE model or a similar high-capacity air handler, using genuine York HVAC parts ensures the internal flow orifices and spring rates match the original equipment manufacturer’s curve. This robust 5-ton R410A TXV is engineered to withstand the rigorous duty cycles of commercial and residential high-tonnage applications, providing the mechanical reliability needed to eliminate hunting and ensure consistent subcooling values.

• Direct OEM Compatibility: Built to the exact specifications of York and Johnson Controls equipment, eliminating the guesswork associated with universal aftermarket valves.
• Optimized System Efficiency: Maintains precise refrigerant metering to ensure the evaporator coil operates at peak capacity without overfeeding.
• Durable ODF Connections: Features 3/8" inlet and 5/8" outlet ODF (Open Drive Fit) connections for standard brazing procedures.
• R410A Precision: Calibrated specifically for the pressure-temperature characteristics of R410A, ensuring stable superheat control across varying ambient conditions.

Is this TXV compatible with other refrigerants like R22?
No, this valve is specifically calibrated for R410A pressure-temperature curves. Using it with R22 or other refrigerants will lead to improper metering and potential compressor damage.

What are the signs that a York S1-025-45293-000 needs replacement?
Common indicators include abnormally low suction pressure combined with high discharge pressure, frost buildup on the expansion valve body, or a constant hunting state where superheat fluctuates wildly regardless of load.

Should the filter drier be replaced at the same time?
Yes. Standard best practice for any expansion valve installation involves replacing the liquid line filter drier to prevent debris or moisture from fouling the new valve's internal seat.

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.