York S1-025-41346-000 Expansion Valve

The York S1-025-41346-000 is an OEM thermal expansion valve (TXV) designed for precise refrigerant metering in R410A systems. Rated for a 1-ton capacity, this balanced-port valve is essential for maintaining optimal superheat levels, protecting the compressor from liquid slugging while maximizing evaporator efficiency. Featuring 3/8" x 3/8" connections and a 30-inch capillary tube, it provides the mechanical response needed for systems prone to fluctuating load conditions. As a genuine system-matched component, it ensures the internal orifice geometry aligns with factory specifications for 12,000 BTU cooling cycles. This HVAC replacement part is engineered for durability in high-pressure environments, utilizing a diaphragm-actuated pin to modulate flow based on real-time suction line temperatures. For technicians performing a TXV replacement, this unit offers the standard 3/8" ODM/ODF sizing required for a clean fit without extensive piping modifications. Rely on this York OEM part to restore system performance and maintain the target subcooling required for peak seasonal energy efficiency ratios.

• Precise Superheat Control: Maintains exact refrigerant flow to prevent evaporator freeze-ups and ensure maximum heat transfer.
• OEM Compatibility: Specifically calibrated for York R410A 1-ton residential split systems and packaged units.
• Optimized Sensing: The 30" capillary tube allows for flexible bulb placement on the suction line to capture accurate temperature readings.
• System Protection: Acts as a critical barrier to prevent liquid refrigerant from reaching the compressor, extending the life of the primary cooling components.
• Standard Fitting: The 3/8 inch x 3/8 inch connections simplify the brazing process during field installation.

• What refrigerant is this valve compatible with? It is designed exclusively for R410A high-pressure systems.
• Will this work for a 1.5-ton unit? No, this is a 1-ton TXV; using it on higher tonnage systems will lead to refrigerant starvation and poor cooling.
• Is the sensing bulb included? Yes, the 30-inch capillary assembly includes the integrated sensing bulb for suction line mounting.
• How do I confirm if my TXV is failing? Common symptoms include high superheat, low suction pressure, or frost on the expansion valve body while the liquid line remains warm.

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.