The Utica-Dunkirk 550001811 Burner Assembly is a precise OEM replacement component specifically engineered for the Q90 Boiler Series

Key Benefits: Optimized Combustion Airflow: Precision-engineered to minimize static resistance

Confirm the temperature range and lead length match your existing specs

ensuring a direct fit for many American Standard parts and Trane split systems

Spirax-Sarco 54663 Main Valve Els PW 17895 The Utica-Dunkirk 550001811 Burner AssemblyThe Spirax Sarco 54663 is a 4 inch ANSI 125 flanged main valve engineered for precision in high capacity steam distribution systems. As a core component of the 25 Series, this pilot operated pressure reducing valve (PRV) utilizes a self actuated design, leveraging downstream pressure feedback via an external sensing line to modulate flow. This cast iron unit is built for heavy duty service, featuring stainless steel internals and a fatigue tested