Emerson Alco 054909 Expansion Valve

As a veteran technician, you know that the Emerson Alco 054909 Expansion Valve is a reliable, high-performance solution for maintaining precise superheat in refrigeration and air conditioning systems. This HFE 1 FC 1-ton TXV features a balanced port design, which is critical for systems that experience fluctuating head pressures or varying load conditions. It comes equipped with a 3/8" x 1/2" SAE flare connection and an externally equalized 1/4" SAE flare, making it a direct fit for many medium-temperature applications originally designed for R12 refrigerant. The 5-foot capillary tube provides ample length for remote bulb placement to ensure accurate sensing and response.

The Alco HFE series thermostatic expansion valve is engineered with a stainless steel power assembly to resist corrosion and extend the service life of the component in harsh environments. With a medium temperature charge (FC), this valve is optimized for evaporator temperatures ranging from -20°F to +50°F. While specifically rated for R12 systems, its robust construction and nominal 1-ton capacity often make it a sought-after part for legacy equipment maintenance and specific retrofit scenarios where precise refrigerant metering is required.

• Balanced Port Construction: Compensates for changes in head pressure, ensuring stable system operation and preventing liquid floodback.
• External Equalization: Essential for systems with high pressure drops across the evaporator, ensuring the TXV responds to actual outlet pressure.
• Flare Connections: Simplifies field replacement by eliminating the need for brazing in tight spaces, preserving the integrity of the angle body valve.
• Stainless Steel Power Element: Protects against atmospheric corrosion and fatigue, maintaining the structural integrity of the expansion valve assembly.
• Field Adjustable Superheat: Allows technicians to fine-tune the system for peak efficiency based on specific site conditions.

Can this valve be used with refrigerants other than R12?
Technically, while the 1-ton rating is based on R12, the HFE 1 FC is also frequently utilized in R134a, R401A, and R409A applications due to similar pressure-temperature relationships in medium-temp ranges. Always verify the superheat adjustment when switching refrigerants.

What is the maximum working pressure for the HFE series?
The Emerson Alco HFE valve is typically rated for a maximum working pressure of 450 psig, making it suitable for standard high-side refrigeration pressures.

How do I adjust the superheat on this model?
The valve features an external adjustment stem. Rotating the stem clockwise increases the tension on the spring, thereby increasing the superheat; counter-clockwise rotation decreases it.

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.