York S1-VLV-011 TXV

The York S1-VLV-011 is a high-capacity 11-ton thermal expansion valve engineered for precise refrigerant metering in large-tonnage R-22 HVAC systems. Designed for heavy-duty commercial and high-yield residential air handlers, this thermostatic expansion valve (TXV) utilizes an externally equalized design to maintain optimal superheat across the evaporator coil. With 7/8" x 1-1/8" ODF solder connections, it provides a secure, leak-free transition within the liquid line and suction header, ensuring system stability even under fluctuating cooling loads.

A veteran technician knows that selecting the correct refrigerant expansion device is critical for preventing liquid slugging and protecting the compressor. The S1-VLV-011 responds dynamically to suction line temperature and pressure, maximizing evaporator efficiency and overall system SEER. This HVAC replacement TXV is built with a durable copper body and stainless steel internal components to resist corrosion and ensure long-term reliability in demanding environments.

• Precise Superheat Control: Maintains an exact pressure-temperature relationship to prevent evaporator frosting and liquid floodback.
• High-Capacity 11-Ton Rating: Optimized for large-scale split systems and rooftop units requiring high mass flow rates of R-22.
• Robust ODF Connections: 7/8" inlet and 1-1/8" outlet sweat connections offer maximum structural integrity for high-pressure applications.
• Extended System Life: Protects the compressor from thermal stress by ensuring only vaporized refrigerant enters the suction line.

• Is the York S1-VLV-011 compatible with R-410A systems? No, this valve is specifically calibrated for the pressure-temperature characteristics of R-22 refrigerant and should not be used in R-410A applications.
• Does this TXV require an external equalizer line? Yes, the S1-VLV-011 is an externally equalized valve, which is necessary for the high pressure drops typically found in 11-ton evaporator coils.
• What are the connection sizes for installation? The valve features a 7/8" ODF inlet and a 1-1/8" ODF outlet for standard copper tubing specifications.

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.