this auto-reset high limit switch monitors internal water temperatures to prevent catastrophic overheating in Lochinvar Copper-Fin II boilers and pool heaters

While optimized as a 5/16 inch ball joint

effectively replacing outdated or failed SmartValve systems in Sterling unit heaters

This silicon carbide ignitor provides consistent thermal performance and serves as the direct factory authorized replacement for several legacy part numbers

a specific LP conversion kit must be utilized to ensure correct orifice sizing and pressure regulation

Lennox 36K28 Limit Switch 320074-702 this auto-reset high limit switchThe Lennox 36K28 is a critical safety component designed for precise thermal regulation within residential and light commercial Lennox furnace systems. This automatic limit switch is engineered to monitor heat exchanger temperatures, effectively interrupting the burner circuit if internal conditions exceed the safety threshold. Operating with a fixed range of 160 190F, it provides a vital fail safe against overheating caused by restricted airflow or