York S1-1TVM2A1 TXV

When you are dealing with a 2-ton cooling unit that is starving or flooding the evaporator, the York S1-1TVM2A1 TXV is the standard-issue fix for R22 systems. This thermostatic expansion valve operates with a 5/8 x 5/8 ODF sweat connection and contains a 30-inch capillary tube designed for precise superheat control. As a direct OEM replacement for York S1-1TVM701, it eliminates the guesswork on compatibility for older York air conditioner and heat pump coils. This valve uses an external equalizer to monitor suction line pressure accurately, preventing compressor slugging and maintaining system efficiency under varying load conditions. For technicians, the 30" lead provides enough reach for flexible sensing bulb placement on the suction header, ensuring you get a true temperature reading for stable refrigerant metering. Whether you are performing a seasonal overhaul or a critical TXV replacement, this component is built to restore factory-spec subcooling and superheat levels in R22 HVAC systems.

• Direct OEM Match: Drops in perfectly as the S1-1TVM701 replacement, maintaining original engineering specs.
• Precision Metering: The 30-inch capillary sensing bulb ensures responsive refrigerant flow adjustment to protect the compressor.
• Standardized Fitment: High-quality 5/8 inch connections make for a clean braze-in installation on 2-ton R22 evaporator coils.
• Operational Stability: Designed specifically for R22 refrigerant properties to prevent hunting and liquid floodback.

Is this TXV compatible with R410A systems?
No, the York S1-1TVM2A1 is specifically calibrated for the pressure-temperature characteristics of R22 refrigerant. Using it with R410A will lead to incorrect metering and potential system failure.

Does this kit include the sensing bulb insulation?
This is an OEM replacement TXV; usually, it is recommended to use fresh foam insulation or cork tape to secure the bulb to the suction line for an accurate thermal reading.

Where should the 30" sensing bulb be mounted?
For 5/8" or 7/8" suction lines, mount the bulb at the 10 or 2 o'clock position on a horizontal run. Ensure the capillary tube is not kinked during the process to maintain the internal gas charge's integrity.

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.