Emerson Alco 062055 Expansion Valve

The Emerson Alco 062055 Expansion Valve is a high-capacity, balanced-ported thermostatic expansion valve designed for demanding commercial HVAC and refrigeration applications. Engineered for systems utilizing R22 or R407C refrigerant, this 20-ton capacity TXV ensures stable superheat control across a wide range of operating conditions. Featuring an externally equalized design with a 1/4" ODF connection, it effectively compensates for pressure drops across the evaporator, making it an essential component for maintainng system efficiency in large-scale chillers and air conditioning units. The Model HFES 20 HC 5FT utilizes a medium temperature "C" charge, optimized for evaporating temperatures between -20°F and +50°F, providing consistent liquid refrigerant metering to prevent compressor slugging while maximizing coil utilization.

Constructed with a rugged vertical straight-through body, the 062055 incorporates 7/8" x 1 1/8" ODF sweat connections for secure, leak-proof brazing into the refrigerant line. The 5-foot capillary tube offers significant flexibility for bulb placement on the suction line, ensuring accurate thermal feedback to the stainless steel power element. This stainless steel assembly is specifically designed to resist corrosion and thermal fatigue, extending the operational life of the valve in harsh mechanical environments. For technicians performing retrofits or repairs, the Emerson 062055 provides a reliable solution for high-load systems requiring a balanced port TXV to handle varying head pressures and load fluctuations with precision.

Key Benefits:

• Balanced Port Design: Delivers superior superheat control and stability during low-load conditions or when encountering fluctuating head pressures.
• Multi-Refrigerant Compatibility: Dual-coded for R22 and R407C, allowing for versatile application in both legacy systems and modern retrofits.
• Durable Construction: Features a stainless steel replaceable power element and diaphragm intended to withstand high-cycle operations and corrosive environments.
• Precision Metering: The medium temperature charge is calibrated for optimal performance in standard air conditioning and medium-temp refrigeration ranges.
• Installation Flexibility: The 7/8" x 1 1/8" sweat straight-body configuration simplifies integration into large-diameter piping runs.

Common Questions:

Can I use this valve for R410A systems?
No, the Emerson 062055 is specifically charged and calibrated for R22 and R407C. Using this Thermostatic Expansion Valve with R410A will result in incorrect superheat settings and potential system failure due to different pressure-temperature relationships.

What is the purpose of the external equalizer on this 20-ton TXV?
In high-capacity 20-ton systems, there is typically a significant pressure drop across the evaporator and distributor. The external equalizer allows the valve to sense the actual pressure at the evaporator outlet, ensuring accurate superheat calculation and preventing underfeeding of the coil.

Does this model include an internal strainer?
The standard HFES series is designed for high-flow capacity; always verify the specific configuration if a removable 100-mesh inlet strainer is required for your installation, as some extended body HF valves may require external filtration.

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.