York S1-025-41017-000 Expansion Valve

The York S1-025-41017-000 is an OEM-grade refrigerant metering device designed specifically for evaporator coils in legacy R22 HVAC systems. As a critical Thermostatic Expansion Valve (TXV), it maintains precise superheat by regulating the flow of liquid refrigerant into the evaporator, preventing compressor slugging while maximizing cooling capacity. This valve features standard 3/8" ODF inlet and 3/8" ODF outlet sweat connections, allowing for a clean installation in tight cabinet configurations. Unlike generic aftermarket valves, this York R22 TXV is calibrated for the specific pressure-temperature characteristics of R22, ensuring stable operation during high-load conditions. For technicians servicing older York air handlers or residential split systems, this valve is the primary solution for resolving evaporator starvation or hunting issues. Proper York S1-025-41017-000 expansion valve installation requires careful bulb insulation and secure mounting to the suction line to ensure accurate sensing and long-term system reliability in demanding field environments.

Key Benefits for Contractors

• Precise Superheat Control: Specifically calibrated for R22 refrigerant cycles to maintain optimal evaporator efficiency and prevent fluid migration.
• OEM Compatibility: Exact replacement for York part number S1-025-41017-000, ensuring correct fitment without requiring line adaptations or rework.
• Durable Construction: High-grade materials designed to withstand commercial-grade vibration and pressure cycles within the refrigeration loop.
• Standard Sizing: Features 3/8" x 3/8" ODF connections for seamless brazing into existing liquid and distributor lines.

Common Questions

Can I use the York S1-025-41017-000 with R410A refrigerant?
No, this TXV is specifically power-element tuned for R22 systems. Using it with R410A will lead to incorrect metering and potential hardware failure due to the significant differences in operating pressures.

What are the connection sizes for this valve?
This expansion valve utilizes a 3/8" ODF inlet and a 3/8" ODF outlet, making it compatible with standard 3/8" liquid lines and evaporator distributor connections.

Does this valve require an external equalizer?
The York S1-025-41017-000 is an internally equalized valve, making it ideal for systems where the pressure drop across the evaporator is negligible.

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.