York S1-025-31981-000 TXV Valve

Maintain precise superheat control and system efficiency with the York S1-025-31981-000, a professional-grade 3 Ton TXV Valve. As an essential metering device, this thermostatic expansion valve is engineered to regulate the flow of refrigerant into the evaporator coil, dynamically responding to heat load variations to prevent compressor floodback. Featuring 3/8 inch ODF x 3/8 inch ODM connections, this valve is built for seamless integration into residential air conditioning and heat pump systems requiring a 3-ton capacity. Heavy-duty brass construction and a durable power head assembly ensure reliable performance under a maximum working pressure of 50 PSIG. Whether you are performing a liquid line repair or a full coil replacement, using this genuine York replacement part provides the exact OEM technical specifications required to restore factory-standard cooling performance. This HVAC expansion valve is a critical component for technicians looking to optimize ER/SEER ratings and ensure long-term equipment reliability in the field.

• Precise Refrigerant Metering: Automatically adjusts flow based on evaporator outlet temperature to maintain optimal superheat.
• Compressor Protection: Prevents liquid slugging by ensuring all refrigerant is fully vaporized before exiting the coil.
• OEM Compatibility: Designed specifically for York HVAC systems, ensuring a perfect fit with 3/8" mechanical connections.
• Energy Efficiency: Improves system efficiency by maximizing the heat transfer surface area of the evaporator.

Is the York S1-025-31981-000 adjustable?
This valve features a standard internal setting calibrated for use in 3-ton systems, though technicians should always verify factory superheat settings during commissioning.

What are the connection sizes for this TXV?
The valve utilizes a 3/8 inch ODF (Outside Diameter Female) inlet and a 3/8 inch ODM (Outside Diameter Male) outlet for standard braze or mechanical fitment.

Can this be used with R-410A refrigerant?
Yes, this 3-ton thermostatic expansion valve is engineered for compatibility with high-pressure R-410A systems commonly found in modern residential units.

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.