The Emerson Alco 057370, also identified as the XB1019MW551B, is a high-performance power assembly designed specifically for the T-Series Take-Apart thermal expansion valves (TXV). This 5' SAE Power Assy is a critical pressure-sensing component that regulates refrigerant flow into the evaporator, ensuring optimal system superheat across a broad operating range of -50°F to +50°F. Built with a durable stainless steel power element, this assembly is engineered to withstand the rigorous demands of industrial refrigeration and commercial HVAC systems, effectively replacing legacy XB1019MW551B units. With its 1/4" SAE external equalizer and a 5-foot capillary tube, this external equalizer power element provides the precision required for stable performance in R-134a systems and other compatible refrigerants up to 18 tons. For contractors performing field service, the take-apart construction of the Emerson T-Series power assembly allows for seamless component replacement without removing the entire valve body, significantly reducing downtime during maintenance or retrofitting projects. Key Benefits for HVACR Industrial Applications Universal T-Series Compatibility: Direct replacement for XB1019MW551B, making it a versatile stock item for TCLE, TJLE, and TJRE valve bodies. Enhanced Durability: Features a stainless steel power assembly that resists corrosion and handles a maximum working pressure of up to 450 psig. Precise Superheat Control: Engineered for accurate thermal response, supporting adjustable superheat settings to maximize evaporator efficiency. Simplified Field Service: The take-apart valve design enables quick installation and replacement of the power head while the system remains piped. Temperature Range Versatility: Reliable operation from -50°F to +50°F, suitable for both low-temperature refrigeration and medium-temperature air conditioning. Common Questions Regarding the Alco 057370 Which valve bodies are compatible with the XB1019MW551B power assembly? This power assembly is designed for use with Emerson Alco T-Series take-apart valves, specifically the TCLE, TJLE, and TJRE series. It is frequently used in systems requiring an Sae connection TXV power head with an external equalizer. What refrigerant can I use with the 057370 power assembly? While primarily utilized in R-134a refrigeration applications, its compatibility depends on the specific valve body and charge. Always verify the charge code (MW55) against your system requirements to ensure proper pressure-temperature tracking. Can I replace a 057370 with a longer capillary tube version? This model features a standard 5-foot capillary. If your application requires a longer reach, you must ensure the power element's sensing bulb charge matches the original Emerson Alco 057370 specifications to maintain accurate calibration. 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.
