Description
The York S1-025-52078-000 is an OEM thermostatic expansion valve (TXV) engineered for precise refrigerant metering in York HVAC systems. Featuring CHATxCHAT (Chatleff-style) connections on both the inlet and outlet, this valve delivers a secure, leak-resistant fit that is compatible with York equipment requiring this specific fitting configuration. Rated at 95.4#, this TXV is designed to regulate refrigerant flow in response to superheat conditions at the evaporator outlet, optimizing system efficiency and protecting the compressor from liquid slugging.
As a genuine York replacement part, the S1-025-52078-000 ensures a direct, drop-in fit with no modifications required, minimizing downtime and simplifying installation for HVAC technicians.
Key Features
- OEM York replacement thermostatic expansion valve (TXV)
- CHATxCHAT (Chatleff-style) inlet and outlet connections for a secure, leak-resistant seal
- 95.4# capacity rating for precise refrigerant flow control
- Regulates refrigerant flow based on evaporator superheat for optimal system efficiency
- Protects compressor from liquid refrigerant slugging
- Direct drop-in replacement — no modifications required
- Designed for compatibility with York HVAC equipment
Product Specifications
- Brand: York
- Part Number / SKU: S1-025-52078-000
- Valve Type: Thermostatic Expansion Valve (TXV)
- Connection Type: CHATxCHAT (Chatleff fittings, both inlet and outlet)
- Capacity Rating: 95.4#
Application
This TXV is intended as a direct OEM replacement for York residential and light commercial HVAC systems that utilize Chatleff-style refrigerant connections. Always verify compatibility with your specific York unit model before ordering. Consult your equipment service manual or contact a qualified HVAC technician for installation guidance.







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