York S1-025-45301-000 Expansion Valve

The York S1-025-45301-000 is an OEM thermostatic expansion valve designed for high-capacity 6-ton residential and commercial HVAC systems. This TXV valve features a precise 3/8" x 5/8" ODF connection with sweat-type fittings, ensuring a secure, leak-free installation on the liquid and suction lines. As a critical metering device, it monitors evaporator performance to prevent liquid slugging and refrigerant famine, optimizing the thermal exchange process. Engineered specifically as a York replacement part, this 6-ton expansion valve maintains the correct superheat across a wide range of operating conditions, which is essential for protecting the compressor and maximizing energy efficiency in ZJ150C00P4FRC5 models and similar equipment. Contractors can rely on this genuine HVAC expansion valve to restore factory-spec refrigerant flow control without the compatibility risks associated with universal aftermarket components.

• Precise Refrigerant Metering: Automatically adjusts flow to maintain optimal superheat and prevent evaporator flooding.
• Direct OEM Fitment: Eliminates the need for field modifications, fitting perfectly into 3/8" x 5/8" ODF sweat configurations.
• Enhanced System Efficiency: Improves heat transfer efficiency by ensuring the evaporator coil is properly utilized throughout the cooling cycle.
• Compressor Protection: Actively prevents liquid refrigerant from reaching the compressor, extending the service life of the entire system.

What are the connection sizes for the York S1-025-45301-000?
This valve features a 3/8-inch ODF (Outer Diameter Female) inlet and a 5/8-inch ODF outlet, designed for standard brazed connections.

Is this TXV compatible with R-410A systems?
Yes, this thermal expansion valve is engineered for modern high-pressure refrigerants common in 6-ton York and Johnson Controls units.

Can I use this as a replacement for a 5-ton valve?
Capacity must match the evaporator and condenser specifications. This is a dedicated 6-ton component; using incorrect tonnage can lead to improper suction pressure and cooling inefficiencies.

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.