York S1-025-41023-000 Expansion Valve

The York S1-025-41023-000 Expansion Valve is a critical metered flow control component designed for precise refrigerant management in evaporator coil assemblies. Featuring 3/8 X 5/8 ODF solder connections, this Thermostatic Expansion Valve (TXV) is engineered specifically for R-22 systems. As a non-adjustable factory-set valve, it eliminates the risk of field-calibration errors, maintaining optimal superheat levels to protect the compressor from liquid slugging while maximizing heat transfer efficiency. This OEM York replacement part serves as the direct S1-025-45285-000 replacement, ensuring a drop-in fit for technicians performing maintenance on older Johnson Controls or York HVAC unit repair projects. The brass body construction provides the durability required for high-pressure residential and light commercial cooling applications, providing consistent flow modulation across varying load conditions without the need for manual tensioning. Professionals should verify port sizes and refrigerant compatibility before brazing.

• Direct OEM replacement for obsolete part number S1-025-45285-000, ensuring zero-clearance compatibility in legacy York air handlers.
• Non-adjustable design provides factory-calibrated superheat control, reducing startup time and technician guesswork during installation.
• 3/8 inch x 5/8 inch connection sizes match standard liquid and suction line diameters for seamless field integration.
• Superior compressor protection by accurately regulating refrigerant mass flow to prevent saturation at the compressor inlet.
• Durable brass construction engineered for compatibility with R-22 systems and common mineral oils.

Is this TXV compatible with R-410A systems?
No, the York S1-025-41023-000 is strictly designed for R-22 refrigerant applications. Using this valve with R-410A will result in incorrect superheat and potential system failure due to pressure rating differences.

What is the primary difference between this and the S1-025-45285-000?
The S1-025-41023-000 is the current production update. It maintains identical 3/8 X 5/8 connection sizes and functional specs, serving as a functional equivalent and direct replacement.

Does this valve require an external equalizer line?
This specific model is typically internally equalized for standard evaporator applications, but technicians should always verify the specific coil manifold requirements prior to ordering.

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.