York S1-124240 TXV

The York S1-124240 Thermostatic Expansion Valve (TXV) is a critical metering component designed for high-capacity 30-ton R22 refrigeration and air conditioning systems. As a direct OEM replacement for S1-526-36282-000, this valve ensures precise refrigerant flow regulation to maintain optimal superheat and evaporator efficiency. It features a 1-1/8 x 1-3/8 ODF solder connection with an external equalizer 1/4 inch ODF port, facilitating balanced port construction that compensates for high pressure drops across the distributor. The 5-foot capillary tube and remote sensing bulb provide the reach necessary for proper placement on suction headers, ensuring accurate thermal feedback. Built with a brass bar body and a 12-mesh permanent inlet strainer, it is engineered to prevent debris from fouling the thermostatic expansion valve orifice, protecting the compressor from liquid slugging while maximizing HVAC system performance.

• Precise Superheat Control: Maintains exact refrigerant levels in the evaporator to prevent compressor floodback and improve system efficiency.
• High-Capacity Compatibility: Rated for 30-ton applications, making it suitable for large commercial rooftop units and split systems.
• Drop-in Replacement: Serves as the direct S1-124240 replacement for obsolete part number S1-526-36282-000, ensuring compatible fitment.
• Balanced Port Design: Optimizes performance under varying load conditions and minimizes the impact of head pressure fluctuations.
• Durable Construction: Heavy-duty brass body and high-quality internals are designed for high-demand, commercial HVAC maintenance.

What is the primary function of the 5-foot bulb lead?
The 60-inch (5-foot) capillary tubing allows for flexible mounting on larger 30-ton evaporator coils, ensuring the sensing bulb reaches the ideal horizontal run of the suction line for accurate temperature measurement.

Can this TXV be used with R-410A systems?
No, the York S1-124240 is specifically calibrated for the pressure-temperature characteristics of R22 refrigerant. Using it with R-410A will result in improper metering and potential system damage.

Does this valve include an internal check valve?
This specific 30-ton model is designed primarily for cooling-only or large-scale refrigeration applications. Verify your specific coil configuration if using in a heat pump application requiring reverse flow.

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.