The Emerson Alco 054930 is a high-performance Thermostatic Expansion Valve (TXV) engineered for precise refrigerant metering in commercial refrigeration and air conditioning systems. This internally equalized valve features a 3/8" x 1/2" SAE flare connection and is the direct OEM replacement for the BFVE-AA-C series. Designed with a 5-foot capillary tube, it provides flexible bulb mounting options to ensure accurate superheat control across varying load conditions. The stainless steel power element and laser-welded diaphragm offer superior resistance to corrosion and high-pressure stress, maintaining a maximum working pressure of 450 psig. Professionals rely on this Alco expansion valve for its ability to prevent compressor liquid slugging while maximizing evaporator efficiency. Its balanced port construction makes it particularly effective in systems with wide-ranging ambient temperatures, ensuring stable refrigerant flow regulation and consistent cooling capacity. Key Benefits: Direct BFVE-AA-C Replacement: Matches original manufacturer specifications for drop-in compatibility and reduced downtime. Precise Superheat Management: Factory-set for optimal performance with integrated adjustment capability to fine-tune HVAC system efficiency. Enhanced Durability: Constructed with a machined brass body and stainless steel internal components to withstand harsh mechanical environments. Universal Application: Ideal for use in heat pumps, commercial coolers, and rooftop units requiring R-22 refrigerant compatibility. Consistent Metering: Large diaphragm area minimizes disturbances, providing smoother valve control and preventing TXV hunting. Common Questions: What are the symptoms of a failing TXV? Common indicators include erratic suction pressures, high superheat leading to an iced-up evaporator, or liquid floodback caused by the valve sticking in the open position. How do I adjust the superheat on this model? Remove the bottom seal cap and use the adjustment screw; clockwise turns increase superheat (reducing flow), while counter-clockwise turns decrease it. Is this valve compatible with modern refrigerants? This specific model is optimized for R-22 applications. For alternate refrigerants, verify the thermostatic charge code to ensure proper pressure-temperature matching. 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.
