The York S1-02545302000 (3924) Thermal Expansion Valve (TXV) is a high-performance refrigerant metering device engineered to precisely regulate refrigerant flow into the evaporator. This 3/8" x 5/8" TXV ensures optimal system efficiency and consistent cooling performance under varying load conditions. Designed for long-term reliability, it maintains ideal superheat levels and prevents compressor damage from liquid refrigerant return. Key Features: Genuine York OEM thermal expansion valve for accurate refrigerant control. Provides precise superheat management for efficient cooling performance. 3/8" x 5/8" fittings for direct OEM system compatibility. Enhances system reliability and compressor protection. Built from durable, corrosion-resistant materials for extended lifespan. Compatible with multiple York residential and commercial systems. Factory-calibrated for R-410A refrigerant applications. Specifications: Part Numbers: S1-02545302000 / 3924 Type: Thermal Expansion Valve (TXV) Connection Size: 3/8" x 5/8" Refrigerant Type: R-410A Application: Air conditioning and heat pump systems Manufacturer: York (Johnson Controls) Compatible Models (short list): S10ZJC00A2AAA5 ZJ120C00G4D5BCD3A3 ZJ120C00R4B5AAA1A3 ZJ120C00R4B5ACLTR3 ZJ120C00R4D5ACATR3 ZJ120E18R4B5ACLTR3 ZJ120E24G4B5ACJTR3 ACP060G1101033 and more. Why Choose This Item: The York S1-02545302000 TXV provides optimal refrigerant flow regulation and stable system performance for your HVAC unit. As a genuine OEM component, it guarantees perfect fit, long-term reliability, and manufacturer-approved efficiency, ensuring your York system operates at peak cooling performance year-round.