York S1-025-42667-000 Expansion Valve

The York S1-025-42667-000 is an industrial-grade 8-ton thermostatic expansion valve designed for precise refrigerant metering in large-capacity HVAC systems. Engineered with a 5/8" x 1-1/4" ODF connection, this TXV with external equalizer ensures optimal superheat control by compensating for pressure drops across the evaporator coil. This Source 1 OEM replacement part is critical for technicians maintaining system stability and preventing liquid slugging in heavy-duty commercial units. Its robust construction facilitates accurate refrigerant flow regulation, maintaining peak thermal efficiency under fluctuating load conditions. For contractors, the York 8-ton expansion valve provides a reliable, drop-in solution to restore original equipment performance without the calibration issues common in universal alternatives.

• High-Capacity Precision: Specifically calibrated for 8-ton HVAC systems to provide exact refrigerant distribution.
• External Equalization: Features an external equalizer to accurately monitor evaporator pressure, ensuring stable superheat levels.
• Durable Brazed Connections: The 5/8" x 1-1/4" ODF sweat connections provide leak-resistant, high-strength joints for high-pressure applications.
• Optimized Efficiency: Improves overall system COP by maintaining the correct evaporator flooding across a wide range of ambient temperatures.

Is the York S1-025-42667-000 compatible with R-410A systems?
Yes, this ODF TXV is designed for modern high-pressure refrigerants, though you should always verify the specific tonnage and refrigerant type on the existing power element before installation.

What are the connection sizes for this 8-ton expansion valve?
This valve features a 5/8" ODF inlet and a 1-1/4" ODF outlet, meeting the high-flow requirements of an 8-ton thermal expansion valve.

Why choose an external equalizer TXV over an internal one?
External equalization is necessary for 8-ton systems to compensate for the significant pressure drop through large evaporator coils, ensuring the valve reacts to the true pressure at the coil outlet.

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.