York S1-025-22734-700 TXV

The York S1-025-22734-700 TXV is a precision-engineered 5-ton thermostatic expansion valve designed specifically for R-410A refrigerant applications. For contractors managing split-system repairs or new evaporator coil installs, this valve ensures precise superheat control by modulating flow based on load demand. It features a 3/8 x 1/2 ODF connection and a 60-inch capillary tube, providing necessary flexibility for mounting the sensing bulb away from the suction header to avoid interference from compressor pulses or oil traps. The balanced port design maintains a consistent 51# pressure drop across varying ambient conditions, preventing hunting and ensuring the evaporator surface area is utilized to maximum efficiency. As an OEM York replacement part, it guarantees exact physical fitment and factory-standard performance, reducing the risk of floodback or compressor slugging during low-load operation.

• Precise Refrigerant Metering: Optimized for R-410A systems to maintain exact superheat levels for a 5-ton capacity.
• Flexible Mounting: The 60-inch capillary length allows for strategic sensing bulb placement on suction lines.
• Durable Construction: Features 3/8-inch inlet and 1/2-inch outlet ODF sweat connections for leak-proof brazing.
• System Reliability: Engineered as a direct OEM HVAC replacement part for seamless compatibility with York and Johnson Controls equipment.

Is the York S1-025-22734-700 compatible with R-22 systems?
No, this valve is fixed for R-410A refrigerant and 5-ton applications. Using it with R-22 will result in improper metering and potential compressor damage.

What is the primary function of the 51# rating on this TXV?
The 51# specification refers to the specific pressure drop characteristics and internal spring setting required for the thermal balance of the 5-ton York evaporator coils it is designed to serve.

Can I use this TXV on a 3-ton or 4-ton unit?
This valve is specifically rated for 5-ton capacity. Undersizing the load relative to the TXV orifice size can lead to evaporator flooding and erratic superheat measurements.

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.