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2 fuel oil systems
Key Benefits OEM Compatibility: Guaranteed fit for York
This kit focuses on the integral backflow prevention components
Broad Compatibility: Replaces multiple legacy part numbers including HH19ZA440 and P331-2143
Regulatory Compliance: Facilitates correct combustion parameters for liquid propane furnace conversion within residential and commercial specifications
Armstrong International D24660 Operator Els PW 17895 2 fuel oil systemsThe Armstrong International D24660, also identified as part number 6005640, is a heavy duty LV 4 Direct Valve Mounted Thermostatic Operator engineered for precise hydronic temperature control. This unit features a high sensitivity liquid filled sensor that provides superior responsiveness to ambient temperature fluctuations compared to standard wax filled alternatives. Designed for seamless integration with Armstrong radiator valves, the D24660
US$ 54.99
US$ 467.50