Reznor 220554 TXV

Ensure precise refrigerant metering and system stability with the Reznor 220554 thermostatic expansion valve. This authentic OEM TXV is specifically engineered for 4-ton HVAC systems, typically utilized in Reznor rooftop units and high-capacity split systems. Featuring 5/8" x 7/8" ODF sweat connections, it facilitates a reliable, leak-resistant connection to the liquid and suction lines. The integrated 60-inch capillary tube and sensing bulb allow for accurate superheat adjustment, effectively preventing liquid floodback to the compressor while mitigating evaporator coil icing during deep cycles. Designed for R410A refrigerant applications, this valve maintains optimal mass flow across varying load conditions, directly improving the HVAC efficiency and duty cycle of industrial cooling equipment. Transitioning from a factory-stock fixed orifice to this balanced port TXV or replacing a restricted OEM valve ensures that the evaporator operates at peak saturation levels without starving the circuit, even during seasonal ambient temperature swings.

• Precise Refrigerant Metering: Automatically adjusts flow based on evaporator load to maintain consistent superheat.
• OEM Compatibility: Exact drop-in replacement for Reznor 220554, eliminating field modification during installation.
• System Protection: Reduces the risk of compressor slugging by modulating refrigerant volume before it exits the evaporator.
• Durable Construction: Built with high-grade alloys to withstand the vibration and pressure fluctuations of commercial HVACR environments.
• Optimized Coil Performance: Features 5/8 inch x 7/8 inch ODF connections to ensure maximum throughput for 48,000 BTU systems.

How do I diagnose a restricted 220554 expansion valve?
Technicians should look for high superheat at the evaporator outlet combined with low suction pressure. If the inlet screen is clear but the valve fails to respond to bulb temperature changes, the internal orifice or power head may be compromised.

Is this TXV compatible with R22 systems?
No, the Reznor 220554 is specifically calibrated for the pressure-temperature characteristics of R410A. Using it with R22 will result in erratic hunting and improper superheat control.

What is the correct sensing bulb orientation for a 7/8" suction line?
For a 7/8" diameter suction line, the bulb should be securely strapped at the 4 o'clock or 8 o'clock position to ensure it reads the liquid-vapor interface accurately and is not insulated by oil pooling at the bottom of the pipe.

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.