Emerson Alco 054905 Expansion Valve

For service technicians requiring a reliable metering solution, the Emerson Alco 054905 Expansion Valve (Model HF 1 FC) delivers precise refrigerant control for medium-temperature applications. This thermostatic expansion valve (TXV) is specifically engineered with a balanced port design to maintain consistent superheat even during varying head pressures, making it an ideal choice for R134a refrigeration systems, as well as legacy R12 and R401A setups. Its 1-ton cooling capacity and internally equalized angle body configuration provide the flexibility needed for demanding commercial ice machine or walk-in cooler retrofits.

The HF-series expansion valve features a stainless steel power element, significantly reducing the risk of corrosion-related failures and ensuring long-term diaphragm integrity in high-moisture environments. With a 3/8" x 1/2" flare connection and a 5-foot capillary tube, this valve allows for versatile bulb placement to accurately monitor evaporator outlet temperatures. Designed for a maximum working pressure of 450 psig, it provides the robust performance expected from Alco Emerson HVACR parts with adjustable superheat to fine-tune system efficiency on-site.

• Balanced Port Design: Compensates for fluctuating head pressures to prevent hunting and ensure stable evaporator feeding.
• Corrosion Resistance: Features a stainless steel replaceable power assembly for enhanced durability in harsh environments.
• Precision Metering: Optimized for medium temperature charge (Code C) applications, ensuring efficient heat transfer across R134a and R12 evaporators.
• Contractor Friendly: The angle body flare connection simplifies installation in tight equipment compartments without the need for brazing.
• Consistent Superheat: Adjustable superheat allows technicians to match the valve's response to specific load requirements for peak COP.

Is this valve compatible with R-404A systems?
No, this specific model is a Code FC valve designed for R134a, R12, and R401A. Using it with R-404A will result in incorrect superheat settings and potential compressor damage due to refrigerant mismatch.

Does this valve require an external equalizer line?
The 054905 is an internally equalized valve. It is best suited for evaporators with low pressure drops; for systems with a distributor, an externally equalized version should be used.

Can I adjust the superheat on this model?
Yes, this Alco HF series valve features a manual superheat adjustment nut, allowing you to fine-tune the 10-12 degree superheat standard required for medium-temp refrigeration.

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.